Relevant bibliographies by topics / Energy efficiency heat exchanger

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Energy efficiency heat exchanger'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Energy efficiency heat exchanger"

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Rostami, Mohammadreza Hasandust, Gholamhassan Najafi, Ali Motevalli, Nor Azwadi Che Sidik, and Muhammad Arif Harun. "Evaluation and Improvement of Thermal Energy of Heat Exchangers with SWCNT, GQD Nanoparticles and PCM (RT82)." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 79, no. 1 (2020): 153–68. http://dx.doi.org/10.37934/arfmts.79.1.153168.

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Today, due to the reduction of energy resources in the world and its pollutants, energy storage methods and increase the thermal efficiency of various systems are very important. In this research, the thermal efficiency and energy storage of two heat exchangers have been investigated in series using phase change materials (RT82) and single wall carbon nanotubes (SWCNT) and graphene quantum dot nanoparticles (GQD) In this research, two heat exchangers have been used in combination. The first heat exchanger was in charge of storing thermal energy and the second heat exchanger was in charge of heat exchange. The reason for this is to improve the heat exchange of the main exchanger (shell and tube) by using heat storage in the secondary exchanger, which has not been addressed in previous research. The results of this study showed that using two heat exchangers in series, the thermal efficiency of the system has increased. Also, the heat energy storage of the double tube heat exchanger was obtained using phase change materials in the single-walled carbon nanotube composition of about 3000 W. The average thermal efficiency of the two heat exchangers as the series has increased by 52%. In general, the effect of the two heat exchangers on each other was investigated in series with two approaches (energy storage and energy conversion) using fin and nanoparticles, which obtained convincing results.
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Sun, Lin, Biwei Fu, Menghui Wei, and Si Zhang. "Analysis of Enhanced Heat Transfer Characteristics of Coaxial Borehole Heat Exchanger." Processes 10, no. 10 (2022): 2057. http://dx.doi.org/10.3390/pr10102057.

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Coaxial borehole heat exchangers provide a practical method for geothermal energy extraction, but heat transfer efficiency is low. In order to address this problem, three coaxial borehole heat exchangers with vortex generators, based on the enhanced heat transfer theory, are proposed in this paper. The author compared and analyzed the heat transfer performance of three coaxial borehole heat exchangers with vortex generators and those of traditional structures, which explains why the new heat exchanger’s heat transfer mechanism is enhanced. The results demonstrated that the vortex generator can enhance the fluid flow’s turbulent kinetic energy in the coaxial heat exchanger. This generator can also improve the mixing characteristics of the fluid flow and heat transfer. The resultant increase in the inlet flow velocity can decrease the friction coefficient f, increase the Nusselt number and strengthen the coaxial sleeve. As a result, the heat exchange performance of the tubular heat exchanger will also be improved. The thread vortex generator (TVG) heat exchanger outperforms the other three heat exchangers in terms of heat exchange performance, extraction temperature and heat extraction power. The results evidenced that the TVG heat exchanger is better than the smooth tube heat exchanger. The thermal performance coefficient PEC was improved by 1.1 times, and the extraction temperature and heating power were increased by 24.06% and 11.93%, respectively. A solid theoretical foundation is provided by the extracted outcomes for designing and selecting high-efficiency coaxial borehole heat exchangers suitable for geothermal energy extraction.
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Dong, Xiaodong, and Chuanhui Zhu. "Research on the Heat Transfer Performance of Phase Change Heat Storage Heat Exchangers Based on Heat Transfer Optimization." Energies 17, no. 16 (2024): 4150. http://dx.doi.org/10.3390/en17164150.

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Thermal storage technology has received increasing attention under the policy of encouraging the development of renewable energy and new clean energy. Optimizing the heat exchange system of phase change thermal storage heat exchangers to obtain better performance has become increasingly urgent. This study comprehensively investigated the actual process of heat transfer and assessed the heat transfer correlation laws between the heat transfer fluids, heat exchange tubes, fins, and phase change materials. Taking the heat exchange efficiency of the heat exchanger as a guide, a simulation was conducted on the effect of the presence and quantity of fins as well as the flow rate of the cooling liquid on the heat exchange efficiency of the heat exchanger. The simulation results showed that too many or too few fins were not conducive to improving heat transfer efficiency. In addition, no positive correlation was observed between the flow rate of the cooling liquid in the heat exchanger and the heat transfer efficiency of the heat exchanger. Specifically, models with slightly slower cooling liquid flow rates had a higher heat transfer efficiency. After a sensitivity analysis, it was found that the number of fins had a more significant effect on the heat transfer efficiency of the heat exchanger than the flow rate of the cooling liquid. The heat exchanger with five fins and a cooling liquid flow rate of 0.1 m/s demonstrated the best heat transfer effect, achieving a temperature drop of 14.76% within 5 min.
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Ye, Wei. "Energy Efficiency Evaluation of Industrial Heat Exchangers Based on Fuzzy Matter Element Method." Mechanics 26, no. 2 (2020): 171–76. http://dx.doi.org/10.5755/j01.mech.26.2.22848.

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According to the energy consumption status of industrial heat exchanger in the whole life cycle, the energy efficiency evaluation index system of industrial heat exchanger is put forward firstly. Secondly, aiming at the complexity and fuzziness of energy consumption of industrial heat exchanger, the energy efficiency evaluation model of industrial heat exchanger based on fuzzy matter-element method is established by using fuzzy matter-element theory and combining the concept of Hemingway schedule. Finally, taking the shell-and-tube heat exchanger as an example, five shell-and-tube heat exchangers with different designs and materials were selected to analyze their energy consumption advantages and disadvantages. Via calculation and analysis, the optimal energy efficiency design of the shell-and-tube heat exchanger was obtained. At the same time, reference opinions were provided for the design and manufacture of the shell-and-tube heat exchanger.
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Batukhtin, Sergey, Andrey Batukhtin, and Marina Baranovskaya. "Water-air regenerative heat exchanger with increased heat exchange efficiency." E3S Web of Conferences 295 (2021): 04005. http://dx.doi.org/10.1051/e3sconf/202129504005.

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According to experts’ forecasts, by 2040 the global demand for energy will increase by 37%, and renewable energy sources in the next 20 years will become the fastest growing segment of the world energy, their share in the next decade will grow by about one and a half times. Solar energy is the fastest growing industry among all non-conventional energy sources and is gaining the highest rates of development in comparison with other renewable energy sources. In this article, the authors provide an overview of the technologies that increase the efficiency and productivity of solar panels, only the investigated methods are described that can speed up the process of introducing solar energy instead of traditional. All the methods described can increase the efficiency of systems that are based on the use of the sun as the main source of energy. The authors presented and described the scheme of a solar-air thermal power plant, which will improve energy efficiency through the use of a regenerative air solar collector with increased heat transfer efficiency. Strengthening will be achieved through the use of hemispherical depressions on the surface that receives solar radiation. A schematic diagram is given and the principle of operation of such a solar collector is described in detail. A comparative calculation of the intensification of the solar collector with the use of depressions and without the use as modernization was carried out, on the basis of which a conclusion was made about the efficiency of using this type of solar collector and the economic effect from the application of this method. A description of the method for calculating the solar collector is given, thanks to which this development can be used and implemented in existing heating and hot water supply systems.
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Pulin, Anton, Mikhail Laptev, Nikolay Kortikov, et al. "Numerical Investigation of Heat Transfer Intensification Using Lattice Structures in Heat Exchangers." Energies 17, no. 13 (2024): 3333. http://dx.doi.org/10.3390/en17133333.

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Heat exchangers make it possible to utilize energy efficiently, reducing the cost of energy production or consumption. For example, they can be used to improve the efficiency of gas turbines. Improving the efficiency of a heat exchanger directly affects the efficiency of the device for which it is used. One of the most effective ways to intensify heat exchange in a heat exchanger without a significant increase in mass-dimensional characteristics and changes in the input parameters of the flows is the introduction of turbulators into the heat exchangers. This article investigates the increase in efficiency of heat exchanger apparatuses by introducing turbulent lattice structures manufactured with the use of additive technologies into their design. The study is carried out by numerical modeling of the heat transfer process for two sections of the heat exchanger: with and without the lattice structure inside. It was found that lattice structures intensify the heat exchange by creating vortex flow structures, as well as by increasing the heat exchange area. Thus, the ratio of convection in thermal conductivity increases to 3.03 times. Also in the article, a comparative analysis of the results obtained with the results of heat transfer intensification using classical flow turbulators is carried out. According to the results of the analysis, it was determined that the investigated turbulators are more effective than classical ones, however, the pressure losses in the investigated turbulators are much higher.
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Nasibullina, O. A., and D. D. Kasintseva. "Study of the effect of the annular gap between the kta housing and the transverse segment partitions on the heat exchange efficiency." Journal of Physics: Conference Series 2373, no. 5 (2022): 052032. http://dx.doi.org/10.1088/1742-6596/2373/5/052032.

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Abstract In modern industry, specially designed devices, called heat exchangers, are used to carry out heat exchange between working bodies (heat exchangers). They are widely used in all industries (chemical, oil and gas, food, etc.), which is due to the high reliability of the design, high productivity, simplicity of design and a variety of types and designs. The objective of the investigation is to simulate heat exchange in a shell-and-tube heat exchanger without an annular gap between the housing and segment transverse partitions and with a gap equal to 6 mm, and then determine at which of these two gaps the heat exchanger thermal efficiency is highest. The simulation was performed in ANSYS Workbench. The comparison of the energy efficiency of the apparatus was made using the Kirpichev criterion. This criterion is quite simple and does not require finding a large number of various parameters. With this criterion, it is possible to determine in which case the heat exchanger will be most advantageous in terms of energy efficiency.
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Liu, Yadan, Shaohua Chen, Caiyu Zhang, Hui Ma, Na Li, and Juan Bai. "Power disassembly equipment for high efficiency heat transfer plate heat exchangers." Thermal Science 28, no. 2 Part B (2024): 1431–39. http://dx.doi.org/10.2298/tsci2402431l.

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Plate heat exchangers are realized by means of a heat transfer mechanism, in which heat is naturally transferred from the hot substance to the object with a lower temperature according to the laws of thermodynamics. Two liquids of different temperatures flow on the wall, heat transfer on the wall and convection of the liquid on the wall, thus promoting heat transfer between the two liquids. Under the same flow rate and power consumption conditions, its heat transfer coefficient is three times that of shell and tube heat exchangers, which is a key and efficient new equipment for effectively using effective resources and saving and developing new energy. However the heat supply plate heat exchanger has a tiny circulation surface and is easily obstructed. Regular maintenance and cleaning, troubleshooting, and plate replacement all necessitate frequent heat exchanger disassembly and installation. The requirements and challenges in dismantling and assembling the heat exchanger are very high, and manual disassembly is wasteful, making consistent force difficult to achieve. The current methods of disassembly and assembly are inefficient and incorrect. The intelligent mechanization of disassembly and assembly equipment is realized in this paper by driving, clamping, automatic control, distance measurement, sensing, and other systems. The problems of uneven force, low efficiency, and precision in plate heat exchanger disassembly and assembly are solved. Our power disassembly equipment for high efficiency heat transfer plate heat exchangers not only enhances disassembly efficiency and precision, but it also ensures the safe operation of the plate heat exchanger heating system, and the heat transfer efficiency and heat exchange efficiency are improved. Furthermore, it has a wide range of applications in the petroleum, chemical, and other industries.
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SHEVKUN, NIKOLAY A. "Heat recovery plant: ways to improve energy efficiency." Agricultural Engineering, no. 6 (2023): 4–9. http://dx.doi.org/10.26897/2687-1149-2023-6-4-9.

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One of the ways to reduce the cost of heating production facilities in animal husbandry is the use of regenerative heat recovery plants. However, the existing designs of heat exchangers have a number of design flaws affecting their functionality, in particular, the uneven distribution of the air flow over the surface of a heat exchanger. This, in turn, does not provide for a more complete utilization of exhaust air heat. Using the example of a recuperative heat recovery unit UT‑3000, the authors consider the possibility of retrofitting it with an aerodynamic grid to evenly distribute the exhaust air flow over the heat exchanger surface and reduce energy costs for its operation. To do this, they analyzed the applicability of the aerodynamic grid. The size of a blade chord was taken into account as an optimisation parameter. The pressure losses calculated on the “fan - pallet - heat exchanger” section showed that the use of an aerodynamic grid with a “normal” number of blades would create a minimum airflow pressure loss of 0.73 Pa minimum airflow pressure loss of 0.73 Pa, which is 58% less than in the version without an aerodynamic grid. Further experimental study of the uniform airflow distribution over the heat exchanger surface aimed at improving the energy efficiency of the heat recovery unit requires a new design of a heat exchanger with an aerodynamic grid, taking into account the recommended range of “normal” number of blades from 16 to 21, the blade circumference arc of 95° and the blade pitch angle ranging between 68 and 82°.
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Benyoub, Mohammed, Benaoumeur Aour, Abdellatif Oudrane, and Kaddour Sadek. "Numerical Investigation of the Coaxial Geothermal Heat Exchanger Performance." International Journal of Engineering Research in Africa 69 (May 21, 2024): 71–90. http://dx.doi.org/10.4028/p-6ovlez.

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Space heating and cooling using geothermal heat exchangers is a promising environmentally friendly green energy solution. Modeling these energy storage systems is crucial for optimizing their design and operation. In this context, the present study consists of numerically investigating the effects of various physical properties, including thermal conductivity, density, and specific heat capacity of each material, as well as flow velocity, on the process of heat transfer in vertical geothermal heat exchangers using coaxial pipes to optimize their energy performance. Numerical simulations were carried out using Gambit-Fluent software. Different materials that make up the coaxial heat exchanger structure studied were tested to highlight their effects on the progress of heat flux and temperature. Thermal and fluid mechanics aspects were also studied. At the end of this study, a comparative analysis was carried out using the U-tube geothermal heat exchanger. The results indicate that the heat exchanger using a coaxial tube demonstrates superior thermal efficiency compared to the U-tube configuration. It has been found that using a low velocity with an appropriate selection of tube, grout, and soil materials results in enhanced dynamic exchanges, thereby enhancing the thermal efficiency of the geothermal exchanger.
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Dissertations / Theses on the topic "Energy efficiency heat exchanger"

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Pääkkönen, T. (Tiina). "Improving the energy efficiency of processes:reduction of the crystallization fouling of heat exchangers." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526209357.

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Abstract Heat exchangers are used in industrial processes to transfer energy from one source to another. Heat exchangers improve the energy efficiency of processes and therefore increase the profitability and decrease the environmental impact of production. Effectiveness of heat exchangers may be diminished by fouling, in which unwanted material deposits on the heat transfer surface reducing the heat transfer and increasing the pressure drop of the system. Due to fouling, the energy demand, and the operation and maintenance costs of industrial processes increase significantly. In addition, fouling causes considerable environmental effects due to the increased energy demand and the use of additives and cleaning chemicals. In this thesis, the crystallization fouling of calcium carbonate on heat transfer surfaces was studied using experimental and modeling methods with the aim to reduce fouling by increasing the understanding of the crystallization fouling phenomenon and providing a validated model for studying crystallization fouling on heat transfer surfaces. The fouling experiments were conducted in a laboratory scale set-up to study the crystallization fouling mechanism under controlled conditions. Based on the knowledge and data gained from the experiments, a crystallization fouling model was developed, and validated in various conditions. As a result, the most important parameters affecting crystallization fouling were identified, and the governing sub-processes were determined. The developed model was used to optimize the surface temperature of a heat exchanger to provide the maximum heat transfer rate when the heat exchanger is subject to fouling at various cleaning intervals. In addition, the used methods were applied in the study of the abatement of fouling by surface modifications. Based on the results, the studied crystallization process is governed by the surface integration sub-process. In addition, the residence time of the fluid at the wall affects the mass deposition. The results showed that the surface temperature and the shear stress are the most important parameters affecting fouling in the studied conditions, and therefore, they should be defined accurately. For this purpose, CFD was found to provide a useful tool. The developed models were found to predict reliably the experimental conditions. Therefore, the thesis shows that the developed model facilitates the design of heat exchangers, but also assists in minimizing the fouling of heat exchangers<br>Tiivistelmä Lämmönvaihtimia käytetään teollisissa prosesseissa siirtämään energiaa kohteesta toiseen. Lämmönvaihtimet parantavat prosessien energiatehokuutta ja siten lisäävät tuotannon kannattavuutta ja vähentävät ympäristövaikutuksia. Lämmönvaihdinten energiatehokkuutta heikentää kuitenkin likaantuminen, jossa lämmönsiirtopinnalle muodostuu kerrostuma, joka heikentää lämmönsiirtoa ja aiheuttaa virtausvastusta. Likaantuminen lisää lämmönvaihdinten energiankulutusta ja käyttökustannuksia sekä aiheuttaa merkittäviä ympäristöpäästöjä kasvaneen energiantarpeen sekä lisä- ja puhdistusaineiden käytön vuoksi. Tässä työssä tutkittiin kalsium karbonaatin aiheuttamaa lämmönsiirtopintojen kiteytyvää likaantumista käyttäen sekä kokeellisia että mallinnusmenetelmiä. Työn tavoitteena oli lisätä tietoa kiteytyvästä likaantumisesta sekä kehittää validoitu laskentamalli, jolla voidaan tutkia lämmönsiirtopintojen kiteytyvää likaantumista. Likaantumiskokeet tehtiin laboratoriomittakaavan koelaitteessa, jolla voidaan tutkia likaantumismekanismia hallituissa olosuhteissa. Kokeista saadun tiedon ja aineiston perusteella kehitettiin kiteytyvää likaantumista kuvaava malli, joka validoitiin eri olosuhteissa. Tulosten perusteella identifioitiin tärkeimmät kiteytyvään likaantumiseen vaikuttavat parametrit sekä määritettiin rajoittavat osa-prosessit. Kehitettyä mallia käytettiin lämmönsiirtoprosessin optimoinnissa. Lisäksi käytettyjä metodeja sovellettiin tutkimukseen, jossa likaantumista pyrittiin vähentämään pintamodifikaatioiden avulla. Tulosten perusteella tutkittu kiteytymisprosessi on pinta-integraation rajoittama. Lisäksi havaittiin, että fluidin viipymäaika lämmönsiirtopinnalla vaikuttaa likaantumisnopeuteen. Tulokset osoittivat, että pintalämpötila ja leikkausjännitys ovat tärkeimmät kiteytyvään likaantumiseen vaikuttavat tekijät tutkituissa olosuhteissa. Näin ollen niiden tarkka määrittely on erittäin tärkeää likaantumisnopeuden mallintamiseksi luotettavasti. Virtauslaskenta (CFD) osoittautui hyödylliseksi työkaluksi näiden parametrien määrittämisessä. Tulosten perusteella kehitetty malli ennustaa luotettavasti kokeellisia olosuhteita. Näin ollen tämä työ osoittaa, että kehitettyä mallia voidaan käyttää apuna paitsi lämmönvaihtimien suunnittelussa myös lämmönsiirtopintojen kiteytyvän likaantumisen vähentämisessä
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Pekkala, Ossian. "Integrated heat exchanger for shower cabins : Legal issues, cost efficiency, designing a prototype." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22088.

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The global energy usage have been growing and is expected to grow in the forthcoming years. The negative effects of increased energy use are greatly depending on the type of base raw materials required for converting the energy and the negative consequences those have on the environment. From the energy used, fossil fuels stands for the largest part. Excess use of fossil fuels have been shown to have considerable negative effects on the environment, including, but not limited to global warming. Renewable energy is today the world’s fastest growing energy source limiting the negative consequences of growing energy use. The commercial and residential buildings stands together for about 40 % of the total energy usage. Residential buildings alone stands for 20 % of the total world delivered energy consumption by end-use sector. In EU the average residential energy use amounts to 25 % and for individual countries like Sweden and Finland it is 21 %. The EU energy efficiency directive from year 2012 sets a target to save 20 % of the unions primary energy usage by year 2020 compared to the year 1990. The EU countries also agreed in October 2014 on a new energy efficiency target of at least 27 % by the year 2030. To reach this goal, improved energy efficiency are required in all sectors. Finland’s energy efficiency law for buildings from 2013 greatly reduces the minimum energy usage allowed for new buildings. Finland is also preparing for a new law that would by 2020 require all new buildings to be zero or close to zero energy buildings. This is defined by the Ministry of the Environment as buildings that have very high energy efficiency, where the already greatly reduced energy demand is satisfied extensively by renewable energy. As part of the goal to greatly increase buildings energy efficiency, this work focus on heat exchangers for showers. The purpose of this project is to investigate how two different heat exchangers works for shower cabins. This is done by testing a system where the heat exchangers are linked together. The system works by transferring heat from the drainage water and the moist air to the incoming colder drinking water before the cold water is heated in the mixerto desired shower temperature. The measurements are taken for different simulated shower situations. The Heat exchangers efficiency are calculated and the energy savings are examined with annual energy savings. The payback time shows that the system is not currently viable. The efficiency need to be improved, the main issue being the constituent materials heat transfer attributes between cold and hot water. The results are discussed and it is concluded that the system would be viable with improved heat exchanger efficiency and adequate shower use, which depends on the user and the amount of people using the shower. The main issue with increased heat transfer efficiency is the greater risk of contamination between the incoming cold drinking water and the outgoing dirty drainage water.
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Huaynate, Andree, Juan Jara, and Carlos Raymundo. "Adaptation of the raise borer elaboration method to a short ore pass by evaluating its efficiency." Springer Science and Business Media Deutschland GmbH, 2019. http://hdl.handle.net/10757/656291.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>The recent climate change has forced people to live in extreme conditions, either excessive heat or cold, implying that they must adapt to survive in these situations. However, there are people who, because of their geographical condition and lack of resources, lack the means and tools to combat these climate changes. The context of this study is provided in a rural town located in the Arequipa region (Peru), whose inhabitants have to fight against frosts of up to −20 °C in an area without electricity. A viable solution to this problem is found through the design and implementation of a heating system using geothermal and photovoltaic energy, which are resources found in the area, according to a report of the Ministry of Energy and Mines. This study analyzes and researches the geographical and meteorological conditions of the region, for validating, through theory and simulations, whether the proposed system can supply the thermal energy required to maintain the indoor temperature at a minimum of 15 °C under extreme conditions. The system is designed after analyzing the best technological options and techniques currently available in the context studied for its ultimate financing and establishing guidelines and indicators for monitoring results.
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Chavarria, Dana, Rubi Ramos, and Carlos Raymundo. "Development of a hybrid heating system based on geothermal–photovoltaic energy to reduce the impact of frosts on inhabitants of rural areas in the ring of fire, southern Peru." Springer Science and Business Media Deutschland GmbH, 2019. http://hdl.handle.net/10757/656249.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>The recent climate change has forced people to live in extreme conditions, either excessive heat or cold, implying that they must adapt to survive in these situations. However, there are people who, because of their geographical condition and lack of resources, lack the means and tools to combat these climate changes. The context of this study is provided in a rural town located in the Arequipa region (Peru), whose inhabitants have to fight against frosts of up to −20 °C in an area without electricity. A viable solution to this problem is found through the design and implementation of a heating system using geothermal and photovoltaic energy, which are resources found in the area, according to a report of the Ministry of Energy and Mines. This study analyzes and researches the geographical and meteorological conditions of the region, for validating, through theory and simulations, whether the proposed system can supply the thermal energy required to maintain the indoor temperature at a minimum of 15 °C under extreme conditions. The system is designed after analyzing the best technological options and techniques currently available in the context studied for its ultimate financing and establishing guidelines and indicators for monitoring results.
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Säker, Robin. "Lönsamheten för energiåtervinning i ventilation Kv. Bordsgossen : Undersökning kring lönsamheten av att installera energiåtervinning i ett 60-tals flerbostadshus." Thesis, Högskolan i Gävle, Energisystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-24045.

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Sedan oljekrisen på 1970-talet har västvärlden strävat efter att hitta energieffektiva     metoder för uppvärmning i fastigheter. I EU står bostadssektorn för ca 40% av det totala energibehovet och den enskilt största delen i människans ekologiska fotavtryck är koldioxidutsläpp, främst via förbränning av fossila bränslen där energisektorn historiskt stått för en stor del av dess utsläpp. Oljan har som uppvärmningsmedel så gott som fasats ut och på ventilationssidan har det de senaste 30 åren hänt fantastiskt mycket där man hela tiden strävar efter att hitta effektivare och miljömässigt hållbara system. Man har så gott som helt lyckats att få bort fossila bränslen som uppvärmningskälla från bostadssektorn och på ventilationssidan har man kommit så långt att man till och med börjar återgå från stora komplexa system till de något enklare systemen som man lyckats optimera  bl.a frånluftsvärmepumpar. Just frånluftsvärmepumpar spås en fortsatt god framtid där effektiviteten på pumparna, det så kallade COP-värdet (coefficient of performance) tros kunna fördubblas. Kv. Bordsgossen är ett flerfamiljsbostadshus i centrala Gävle och består av fem huskroppar fördelade på 53 lägenheter och därutöver kontors- och butikslokaler på bottenplan. Fastigheten som är från 1963 saknar helt energiåtervinning och fastighetsägaren Svedinger Fastigheter vill nu ändra på detta. Denna rapport tar vid där en tidigare energikartläggning slutar och i denna rapport har det undersökts om det finns lönsamhet i frånluftsvärmepump för fastighetens lägenheter, samt lönsamheten i värmeväxlare för fastighetens garage och en värmeväxlare för den butikslokal som inhyser företaget Arkitektkopia. Resultatet visar att det vid uppskattad installationskostnad finns god ekonomi i att installera frånluftsvärmepump i fastigheten samt att installera värmeväxlare för den lokal som inhyser Arkitektkopia och för fastighetens garage. Det som fastighetsägaren måste ta hänsyn till är att den uppskattade installationskostnaden nödvändigtvis inte är korrekt, utan bör ses som en fingervisare. Svedinger Fastigheter bör även hålla ett öga på den eventuella flödestaxa som den lokala fjärrvärmedistributören funderar på att tillämpa, som om den tas i anspråk antas kunna ha stor påverkan på den ekonomiska vinning som finns att hämta i energieffektivisering. Vidare behöver ventilationen i fastigheten injusteras och om fastighetsägaren beslutar att skrida till verket med ett fönsterbyte ska man ha klart för sig att det kommer att påverka fastighetens termiska komfort och energibehov.<br>Since the oil crisis in the 1970’s the western world has sought to find energy-efficient methods for heating in real estate. In the EU, the housing sector accounts for about 40% of the total energy demand, and the single largest part of man's ecological footprint is carbon dioxide emissions, primarily through the use of fossil fuels in which the energy sector has historically accounted for a large part of its emissions. Oil has in the terms of heating almost entirely been phased out and over the last 30 years the ventilations development has seen a great deal of progress where the market constantly strives for better efficiency and environmentally friendly techniques. The industry has managed to almost at full extent to remove fossil fuels as a source of heating for housing. On the ventilation side, the technique has come so far that systems start returning from large complex systems to the simpler systems that is optimized, for example, exhaust air heat pumps (EHAP). Exhaust air heat pumps are expected have a good future ahead where the efficiency of the pumps, the so-called COP-value (coefficient of performance), is predicted to be doubled.  Kv. Bordsgossen is a multi-family house in central part of the city of Gävle and consists of five houses divided into 53 apartments and on the ground floor consists of offices and retail premises. The property, which dates back to 1963, has no energy recovery and the property owner, Svedinger Fastigheter wants to change this.  This report has investigated whether there is profitability for a exhaust air heat pump in the property's apartments, as well as the profitability of heat exchanger for the property's garage as well as for the premises that accommodate the company Arkitektkopia. The result shows that, at the estimated installation cost, there is a good economy in installing exhaust air heat pump in the property as well as installing heat exchanger in the part  inhabited by Arkitektkopia, and in the facilities garage. What the property owner needs to take into consideration is that the estimated installation costs necessarily isn’t correct, but should be considered  as a direction point. Svedinger Fastigheter also needs to keep an eye on the possible flow rate that the local district heating distributor is considering applying. Should it be applied it is predicted to have a huge impact on the economical earnings in energy efficient technology. Furthermore, the ventilation is in needs of a adjustment and if the property owner decides to move on  with a window change it will affect the property's thermal comfort and energy needs.
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Marouf, Tawga. "Beräkningsalgoritm för fouling i pelletervärmeväxlare inom plasttillverkning." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28627.

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Sweden’s energy consumption is divided into three major sectors. One of them is the industry sector. One third of Sweden’s energy consumption is converted in the industries. The chemical industry is one of those industries with great energy needs. This thesis looks into energy efficiency in industry, in particular the plastics manufacturing industry. Efficiency concerning heat exchangers, their fouling resistance and also pumps. This thesis also relates to the industry in the big picture as heat exchangers and pumps are widely used and these has a great energy and environmental efficiency. This thesis presents an algorithm especially developed for this issue. The thesis has been written by dividing the work into measurements and data, implementation and analysis. The result of this thesis is an Excel-sheet that may be used to calculate the fouling resistance in a plate heat exchanger.<br>Sveriges energianvändning är uppdelad i tre stora sektorer. Ett av dem är industrin. En tredjedel av Sveriges energiförbrukning omvandlas inom industrierna. Kemiindustrin är av dem industrier som har stort energibehov. Detta examensarbete tar upp effektivisering inom industrin, närmre sett plasttillverkningsindustrin. Effektiviseringen berör värmeväxlare och dess foulingresistans och även pumpar. Examensarbetet kan spegla industrin i den stora bilden då värmeväxlare och pumpar finns väldigt utspritt och effektiviseras dessa har en stor energi och miljöeffektivisering gjorts. För att energieffektivisera inom detta examensarbete har en beräkningsalgoritm tagits fram. Arbetet har delats upp i mätvärden, beräkningar genomförande och analys. Resultatet blev en Excel-ark som kan användas för att beräkna foulingresistansen i en plattvärmeväxlare.
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Jain, Pranjal, and Khaled Alturkmani. "Improving the Efficiency of Thermal Energy Usage in Residential Buildings by Heat Recovery from Wastewater." Thesis, Högskolan i Halmstad, Akademin för företagande, innovation och hållbarhet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44853.

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This study aims to rationalize the consumption of thermal energy in residential buildings by recovering heat from wastewater inside the building before entering the central sewage network outside the building, by conducting an analytical study for a residential tower in Syria to find out the coverage percentage of the heat energy recovered from wastewater for the heating and domestic hot water loads needed for the tower, and calculating the percentage of reduction in carbon dioxide (CO2) gases. It is a simple technology as the thermal recovery system consists of three main components, which are in order: a wastewater tank, heat exchangers, and a heat pump. The research begins with an introduction that consists of the importance of wastewater and the waste heat energy it carries. After that, there are some case studies, research problem, its importance, the aim of the research, and finally the research methodology. In the first chapter, we talked about the concept of heat recovery from wastewater in general, methods of heat recovery, and the most important advantages and disadvantages of this process. It also includes an identification of the main parts used in this technology and how it works, especially the exchangers and the heat pump. This chapter also addresses the problem of forming a layer of biofilms on the surface of heat exchangers from the wastewater side and the most important methods used to treat it. We move on to the second chapter, in which we review the most important facilities for heat recovery from wastewater that have been viewed. Then comes the third chapter in which the heat recovery process was conducted for a nine storey residential tower in Syria, each floor has four apartments, where we first calculated the rate of wastewater flow for the entire tower, and we proposed a heat recovery system (physical model) inside the tower. Then the mathematical equations for heat recovery and the solution of these equations were developed based on some necessary assumptions needed in the solution process to know the most important results desired in this field. It also included the calculation of the coverage ratio of the heat energy recovered from the wastewater for the domestic hot water and heating loads, as well as the calculation of the mass and percentage of the reduction of carbon emitted to the atmosphere. Then simple economic feasibility was also conducted in this chapter to know the daily financial savings as a result of using this technology. The research ends with the most important conclusions and future research that have been reached and the conclusion of the research. The most important results show that the average coverage percentage of heat energy recovered from wastewater for heating load in residential buildings ranges between [30-56%]. It was also found that the average coverage percentage of heat energy recovered from wastewater for domestic hot water load ranges between [65-100%].
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Garcia, Jose Daniel. "Characterization of greywater heat exchangers and the potential of implementation for energy savings." Thesis, KTH, Installations- och energisystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191123.

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Buildings account for up to 32% of the total energy use in different countries. Directives from the European Union have pointed out the importance of increasing energy efficiency in buildings. New regulation in countries like Sweden establishes that new buildings should fulfill regulations of Nearly Zero Energy Buildings (NZEB), opening an opportunity for new technologies to achieve these goals. Almost 80-90% of the energy in domestic hot water use is wasted from different applications with almost no use and with a lot of potential energy to be recovered. The present work studied the characteristics of greywater heat exchanger as a solution to recuperate heat from greywater to increase efficiency in buildings. This study explored the fluid mechanics involved in the vertical greywater heat exchangers, analyzing the falling film effect present in drain pipes and the effects of the secondary flow generated in the external helical coil. A heat transfer model from a theoretical approach was proposed and validated. In addition, this study explored the different variables influencing the economic feasibility of the technology and an economic analysis was performed. A theoretical comparison between a greywater heat exchanger application and a reference case without it was evaluated highlighting the importance of all the variables involved in the potential of implementation of the technology. The technology shows big potential in households with high water consumptions, especially with electric boilers.
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Parment, Rasmus. "En jämförelsestudie av värmeväxlare : Värmeöverföring för värmeväxlare i korrosiva miljöer." Thesis, Mittuniversitetet, Avdelningen för kemiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-34948.

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Det finns stora vinningar att göra inom både transport- och industrisektorn genom att effektivisera materialanvändningen i produkter. Denna vinning återfinns i både materialkostnader och energieffektivisering. Scandymet AB är ett företag som tillverkar värmeväxlare och elektriska doppvärmare för ytbehandlingsindustrin. Denna rapport syftar till att utvärdera hur väl ett kalkylark som används som underlag för dimensionering av värmeväxlare hos företaget stämmer överens med verkligheten. En testrigg har därför konstruerats för att undersöka kalkylarkets validitet gällande temperaturer under 46 grader Celsius. I rapporten redovisas resultaten av tester på fyra olika värmeväxlare och resultaten har jämförts med företagets kalkylark. Undersökningarna visar att två av dessa värmeväxlare är överdimensionerade och två värmeväxlare stämde väl överens med kalkylarket. I samtliga tester används vatten som media, men då Scandymet AB värmeväxlares huvudsakliga användningsområde är korrosiva vätskor dras slutsatsen att fler undersökningar med andra fluider skulle behövas för att ytterligare fördjupa kunskapen inom värmeväxlarnas korrekta dimensionering.<br>There are huge gains in both the transport and industry sectors by making material use more efficient in products. This gain is found in both material costs and energy efficiency. Scandymet AB is a company that manufactures heat exchanger and electric immersion heaters for the surface treatment industry. This report aims to evaluate how well a spreadsheet used as basis for the dimensioning of heat exchangers at the company is consistent with reality. A test rig has therefore been designed and constructed to investigate the validity of the spreadsheet. The report presents the results of tests on four different heat exchangers and the results have been compared with the company’s spreadsheet. In all tests water has been used as the media to be heated, but since Scandymet AB’s heat exchanger’s main application is corrosive liquids, therefore I consider that a deeper investigation with additional fluids would be necessary to further deepen the knowledge in the area.
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Konduru, Raj Narayan. "Coupled Conduction-Convection-Radiation heat transfer using Mesh-less methods : Application to porous heat exchanger." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0190.

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Cette recherche se concentre sur la récupération de chaleur dans les industries fonctionnant à haute température, telles que la métallurgie, la sidérurgie, le ciment et la production de verre, dans le dessein de diminuer les rejets de gaz à effet de serre. Une approche efficace consiste à incorporer une structure poreuse dans l'échangeur de chaleur afin d'améliorer les taux de transfert de chaleur tout en minimisant les pertes de charge. Dans un premier temps, des expériences ont été menées avec des échangeurs de chaleur poreux dotés de structures ressemblant à de la mousse à cellules de Kelvin. Le dispositif expérimental consistait à placer la mousse à l'intérieur d'un tube et à la soumettre à des températures élevées allant jusqu'à 800°C dans le sens radial, tandis que de l'air circulait dans le sens axial. Ce dispositif englobait les phénomènes physiques de conduction, de convection et de rayonnement couplés. Les résultats de ces expériences ont ensuite été utilisés pour valider un modèle numérique utilisant une approche déterministe, constituant ainsi l'étape fondamentale du projet. Toutefois, ces méthodes se sont heurtées à des difficultés dans la conduite d'analyses complètes, compte tenu des différents types de mousse, des propriétés géométriques distinctes et des attributs thermophysiques des matériaux qui influencent les performances de l'échangeur de chaleur en raison de la complexité de sa structure. En outre, l'interaction de la conduction, de la convection et du rayonnement avec les structures complexes de la mousse a exigé des ressources de calcul considérables. Par conséquent, une alternative à la méthode déterministe (DM) a été recherchée, ce qui a conduit à l'exploration de méthodes sans maillage. Le modèle numérique DM validé sert de référence pour les modèles alternatifs, deux modèles ayant été adoptés/développés. Le premier modèle, connu sous le nom de méthode Semi Meshless (SMM) ou DM-MCM, fusionne l'approche déterministe avec la méthode statistique de Monte Carlo. Dans ce modèle, l'approche déterministe calcule efficacement les champs de vitesse, tandis que la méthode de Monte Carlo détermine les distributions locales de température. Cette combinaison s'avère efficace et robuste pour les géométries complexes. Néanmoins, le premier modèle conserve une limitation dans le calcul des champs d'écoulement en utilisant l'approche déterministe, ce qui a conduit à la conception d'un second modèle innovant. Le second modèle, appelé SPH-MCM, utilise smoothed particle hydrodynamics (SPH) pour surmonter les limites des approximations basées sur un maillage lors du calcul des champs d'écoulement. L'approche SPH élimine le besoin d'un maillage encombrant, ce qui permet de calculer plus efficacement les champs de vitesse. Ces champs sont ensuite utilisés pour calculer les distributions de température à l'aide de la méthode de Monte Carlo. Le principal avantage de ce modèle réside dans le fait qu'il repose sur un maillage de surface et des points, au lieu de géométries solides et d'un maillage de volume. Cependant, la méthode SPH nécessite un temps de calcul plus long que l'approche déterministe. Les deux modèles alternatifs présentent un niveau élevé de concordance avec le modèle déterministe, ce qui souligne leur potentiel pour faire progresser la conception des échangeurs de chaleur. Le premier modèle est utilisé pour une analyse paramétrique complète visant à étudier la puissance extraite et la chute de pression pour différentes structures poreuses dans la configuration de l'échangeur de chaleur<br>This research concentrates on heat recovery in industries operating at high temperatures, such as metallurgy, iron and steel, cement, and glass production, with the goal of mitigating greenhouse gas emissions. An effective approach involves incorporating a porous structure within the heat exchanger to enhance heat transfer rates while minimizing pressure drops. Initially, experiments were conducted using porous heat exchangers with Kelvin cell foam structures. The experimental setup involved placing the foam inside a tube and subjecting it to high temperatures of up to SI{800}{degreeCelsius} radially, while air was flown axially. This arrangement encompassed the physical phenomena of coupled conduction, convection, and radiation. The results of these experiments were subsequently employed to validate a numerical model utilizing a deterministic approach, forming the foundational step of the project. However, these methods encountered challenges in conducting comprehensive analyses, considering various foam types, distinct geometric properties, and thermophysical material attributes that influence heat exchanger performance due to the intricate structure. Moreover, the interplay of conduction, convection, and radiation along with complex foam structures demanded substantial computational resources. Consequently, an alternative to the deterministic method (DM) was sought, leading to the exploration of mesh-free methods. The validated DM numerical model serves as a reference for the alternative models, with two models being adopted/developed. The first model, known as Semi Meshless Method (SMM) or DM-MCM, merges the deterministic approach with the statistical Monte Carlo Method. In this model, the deterministic approach efficiently calculates velocity fields, while the Monte Carlo method determines local temperature distributions. This combination proves effective and robust for complex geometries. Nevertheless, the first model retains a limitation in calculating flow fields using the deterministic approach, prompting the design of a second innovative model. The second model, referred to as SPH-MCM, utilizes smoothed particle hydrodynamics (SPH) to overcome the limitations of grid-based approximations when computing flow fields. SPH eliminates the need for a complicated mesh, facilitating more efficient velocity field calculations. These fields are then employed to compute temperature distributions using the Monte Carlo method. The primary advantage of this model lies in its reliance on a surface mesh and points, instead of solid geometries and a volume mesh. However, the SPH method requires a longer computation time compared to the deterministic approach. Both alternative models exhibit a high level of agreement with the deterministic model, highlighting their potential to advance heat exchanger design. The first model is employed for a comprehensive parametric analysis aimed at studying the power extracted and pressure drop for different porous structure's in the heat exchanger configuration
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Books on the topic "Energy efficiency heat exchanger"

1

M, Ohadi M., Conklin J. C, American Society of Mechanical Engineers. Heat Transfer Division., American Society of Mechanical Engineers. Process Industries Division., and International Mechanical Engineering Congress and Exposition (1995 : San Francisco, Calif.), eds. Advances in enhanced heat/mass transfer and energy efficiency: Presented at the 1995 ASME International Mechanical Engineering Congress and Exposition, November 12-17, 1995, San Francisco, California. American Society of Mechanical Engineers, 1995.

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Desideri, Umberto, Giampaolo Manfrida, and Enrico Sciubba, eds. ECOS 2012. Firenze University Press, 2012. http://dx.doi.org/10.36253/978-88-6655-322-9.

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The 8-volume set contains the Proceedings of the 25th ECOS 2012 International Conference, Perugia, Italy, June 26th to June 29th, 2012. ECOS is an acronym for Efficiency, Cost, Optimization and Simulation (of energy conversion systems and processes), summarizing the topics covered in ECOS: Thermodynamics, Heat and Mass Transfer, Exergy and Second Law Analysis, Process Integration and Heat Exchanger Networks, Fluid Dynamics and Power Plant Components, Fuel Cells, Simulation of Energy Conversion Systems, Renewable Energies, Thermo-Economic Analysis and Optimisation, Combustion, Chemical Reactors, Carbon Capture and Sequestration, Building/Urban/Complex Energy Systems, Water Desalination and Use of Water Resources, Energy Systems- Environmental and Sustainability Issues, System Operation/ Control/Diagnosis and Prognosis, Industrial Ecology.
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Awasthi, Mukesh Kumar, Ashwani Kumar, Nitesh Dutt, and Sivasakthivel Thangavel. Heat Exchanger Technologies for Sustainable Renewable Energy Systems. CRC Press, 2025. https://doi.org/10.1201/9781003534785.

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(Korea), Wŏnbang Tʻekʻŭ, ред. Musŏng pangjŏn ŭl iyonghan nano ipcha chegŏ mit enŏji hoesuhyŏng kohyoyul hwanʼgi sisŭtʻem kaebal: Mise mŏnji oyŏm kaesŏn kisul = Development of high efficiency ventilation system comprising a heat exchanger and a silent discharge reactor for energy recovery and nano particle precipitation : fine dust removal technology. Hwanʼgyŏngbu, 2005.

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H, Thomas David. Energy efficiency through combined heat and power or cogeneration. Edited by United States. Environmental Protection Agency and Oak Ridge National Laboratory. Nova Science Publishers, 2010.

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A, Çengel Yunus, and Dinçer İbrahim 1964-, eds. Efficiency evaluation of energy systems. Springer, 2012.

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Vichorek, Daniel N. Ground source heat pumps: Comfort and efficiency for Montana homes. Dept. of Environmental Quality, Energy Division, 1996.

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Institute, Air-Conditioning and Refrigeration. Guideline for calculating the efficiency of energy recovery ventilation and its effect on efficiency and sizing of building HVAC systems. ARI, 2003.

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United Nations. Economic and Social Commission for Asia and the Pacific, ed. Guidebook on cogeneration as a means of pollution control and energy efficiency in Asia. United Nations, 2000.

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European Commission. Directorate-General for Energy and Transport, ed. Combining heat and power: Using cogeneration to improve energy efficiency in the European Union. European Commission, Energy and Transport DG, 2005.

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Book chapters on the topic "Energy efficiency heat exchanger"

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Yanniotis, S., D. Kolokotsa, and P. Valachis. "A Rotating Disc Heat Exchanger." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_55.

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Isdale, J. D. "Generic Studies for Industrial Heat Exchanger Fouling." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_64.

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Ohadi, M. M., S. S. Li, A. I. Ansari, and R. L. Whipple. "Compound Enhancement of Heat Transfer in a Gas-to-Gas Heat Exchanger." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_53.

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Andreou, Ioannis S. "New Criteria for the Design of Optimal Heat Exchanger Networks." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_82.

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van Wingerden, Ton J. M., Jan der Kinderen, John Geus, and Peter Neumann. "Chemical Fixed Bed Reactor with Integrated Heat Exchanger with Sinter Metals." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_105.

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Papalexandri, Katerina P., and Efstratios N. Pistikopoulos. "A Retrofit Design Model for Improving the Operability of Heat Exchanger Networks." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_81.

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Howarth, C. R., R. J. J. Jachuck, and C. Ramshaw. "The Performance Characteristics of a Water/Water “Polymer Film Compact Heat Exchanger” (PFCHE)." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_60.

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Vasiliev, L. L. "Heat Pipes Heat Exchangers and Energy Efficiency in Process Technology." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_59.

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Shah, R. K., and J. M. Robertson. "Compact Heat Exchangers for the Process Industry." In Energy Efficiency in Process Technology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1454-7_51.

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Arasavelli, Shanmukh Sudhir, Govinda Rao Budda, and Anand Kumar Solanki. "Efficiency enhancement of twin pipe heat exchangers using twisted tape inserts." In Heat Exchanger Technologies for Sustainable Renewable Energy Systems. CRC Press, 2025. https://doi.org/10.1201/9781003534785-5.

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Conference papers on the topic "Energy efficiency heat exchanger"

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Mekidiche, Zinet, Juan A. Labarta, and Jos� A. Caballero. "Optimizing Heat Recovery: Advanced Design of Integrated Heat Exchanger Networks with ORCs and Heat Pumps." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.155956.

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A comprehensive model has been developed to design heat exchanger networks integrated with organic Rankine cycles (ORCs) and heat pumps, aiming to optimize energy efficiency. The model focuses on two key objectives: first, using heat pumps to reduce dependency on external services by enhancing heat recovery within the system; second, utilizing ORCs to recover residual heat or generate additional energy. To achieve optimal performance, the model requires careful selection of fluids for both ORCs and heat pumps, and the determination of optimal operating temperatures for maximum efficiency. The heat exchanger network is designed to be flexible, with non-fixed inlet and outlet temperatures, while simultaneously optimizing the number and operating conditions of ORCs and heat pumps. This approach reduces costs related to external services, electricity, and equipment such as compressors and turbines. Ultimately, the model facilitates the design of a heat exchanger network that efficiently utilizes residual heat and integrates other energy streams, thus improving both operational efficiency and sustainability. It demonstrates the potential for incorporating ORCs into systems that manage various energy streams, extending beyond just residual heat.
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Rath, Michael, Timm Eicker, Holger Born, Jonas Güldenhaupt, Gregor Bussmann, and Rolf Bracke. "GEOSTAR SYSTEMS: ADVANCEMENTS IN BOREHOLE HEAT EXCHANGER TECHNOLOGY FOR URBAN HEAT TRANSITIONS - MONITORING AND FUTURE DEVELOPMENTS." In 37th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2024). ECOS 2024, 2024. http://dx.doi.org/10.52202/077185-0206.

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Rydalina, Natalia, Elena Antonova, Oleg Stepanov, Alexey Arzamastsev, and Alexey Sharapov. "Model for Calculating the Thermohydraulic Parameters of a Heat Exchanger with Porous Inserts." In 2024 6th International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency (SUMMA). IEEE, 2024. https://doi.org/10.1109/summa64428.2024.10803715.

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Padmanabhan, Shri Balaji, Mohamed Tahar Mabrouk, and Bruno Lacarrière. "A SURROGATE MODEL FOR HEAT EXCHANGER USING NON-INTRUSIVE REDUCED ORDER MODELING." In 37th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2024). ECOS 2024, 2024. http://dx.doi.org/10.52202/077185-0088.

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Djebali, Ridha, M. Ferhi, F. Mechighel, et al. "Deep Learning Analysis and Numerical Simulation of Exergy and Nanofluid Heat Transfer Efficiency in a Two-Compartment Heat Exchanger with Internal Heat Generation and Baffles." In 2025 15th International Renewable Energy Congress (IREC). IEEE, 2025. https://doi.org/10.1109/irec64614.2025.10926804.

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Stolycia, Mitchell J., and Lande Liu. "Dimple Shape Design to Enhance Heat Transfer in Plate Heat Exchangers." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.146371.

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This article studies four dimple shapes: spherical, smoothed-spherical, normal distribution, and error distribution and how they enhance heat transfer on a plate within a plate heat exchanger using computational fluid dynamics. The dimple that showed the greatest efficiency of heat transfer was the normal distribution dimple, giving a temperature increase of 7.5 times of the smoothed-spherical and 15% more than the error distribution dimple shape. This was primarily due to the large increase in the turbulent kinetic energy caused by the eddies created upon the flow over the normal distribution shape. With the normal distribution shape being found to be the most effective in enhancing heat transfer, a layout of multiple normal distribution dimples based on the stage of flow development was also studied. It was found that a fully developed flow resulted in 9.5% more efficiency than half developed flow and 31% more efficient than placing dimples directly next to each other.
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Sundar, Lingala Syam. "Energy Efficiency Analysis of MWCNT/Water Nanofluids in a Double Pipe Heat Exchanger: Artificial Neural Network Predictions." In 2025 7th Global Power, Energy and Communication Conference (GPECOM). IEEE, 2025. https://doi.org/10.1109/gpecom65896.2025.11061262.

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Kalbaliyev, Rufat, Lala Akhmedova-Azizova, and Ulviyye Nasibova. "Increasing the Energy Efficiency of Heat Exchanger Devices." In 2nd International Scientific-Practical Conference "Machine Building and Energy: New Concepts and Technologies". Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-d2ysxh.

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Studying the temperature regimes affecting the durability of the metal wall of heat exchanger pipes helps identify ways to enhance efficiency in heat exchange processes. One of the key factors determining the temperature regime of the pipe wall is the heat transfer. One of the main factors contributing to an increase in heat transfer is the intensification of heat exchange.
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Nasrabadi, Mehdi, and Ramin Haghighi Khoshkhoo. "Design of Fin Plate Heat Exchanger for Increasing Micro Turbine Efficiency and Introduction of Fin Plate Heat Exchanger Design Software (KhoshNasr) for this Purpose." In ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/ht2008-56114.

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A heat exchanger is a part of micro turbines, which can improve thermal efficiency of micro turbines up to 30 percent. Some important factors in design of heat exchangers are low cost, high efficiency, small size, low weight and high performance. In this paper, design of a heat exchanger with consideration of Iranian industry’s capability has been investigated. A survey of different types of gas to-gas heat exchangers is presented and then fin-tube heat exchanger, fin-plate heat exchanger, shell &amp; tube heat exchanger and regenerator are designed. Also, the effect of thermo hydraulic parameters on the efficiency of the three heat exchangers is investigated. Effects of these heat exchangers on the efficiency of a 100 kW micro turbine are studied and the heat exchanger with the highest efficiency is selected. The algorithm for design and modeling of the selected heat exchanger is then presented. After research on all types of heat exchangers, fin plate heat exchanger appeared to be the optimum choice for manufacturing in Iran industry. A new design program was written in MATLAB based on our suggested algorithm. Since there were some practical charts about heat transfer and pressure drop in design of the heat exchanger, all the existing experimental curves related to heat transfer and pressure of fins (required in the design of the heat exchanger) were converted to data (using “Image Processing” technique in MATLAB) and implemented in the design program.
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Prasad, Vijaysai, Mark D. Osborn, Shirley S. Au, et al. "Predictive Heat Exchanger Efficiency Monitoring." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72007.

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The performance of heat exchangers degrades with time due to fouling or deposition of material on the heat transfer surface. The fouling of critical exchangers in manufacturing plants results in a significant cost impact in terms of production losses, energy efficiency, and maintenance costs. While most plants monitor their exchangers to some degree, the ability to effect real and sustainable improvements requires four components: (1) real time monitoring; (2) an advance warning mechanism; (3) the ability to diagnose the cause of fouling; and (4) the ability to treat the cause in order to slow or reverse the degradation. CHeX is a comprehensive tool which monitors, predicts, and diagnoses heat exchanger performance. The unique features of this advanced technology include: numerous data cleaning steps to improve data quality and isolate a net fouling trend, an adaptive model which learns from the past to predict performance three years in advance, and knowledge-based diagnostics which identify the probable cause(s) of fouling and recommend corrective actions. The final control action is performed by a field engineer in adjusting the fouling treatment. The scope of the current paper includes only the detection and prediction features. To date, CHeX has been validated at three chemical processing plants, for fourteen exchangers. Selected case studies shall be presented to demonstrate the power of its algorithms over traditional calculations.
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Reports on the topic "Energy efficiency heat exchanger"

1

Sienicki, James J., Qiuping Lv, and Anton Moisseytsev. High Efficiency Heat Exchanger for High Temperature and High Pressure Applications. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1404925.

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Jebrail, F. F., and R. S. Kistler. L51753 Natural Draft Aerial Coolers. Pipeline Research Council International, Inc. (PRCI), 1996. http://dx.doi.org/10.55274/r0010422.

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In recent years, environmental regulations have tightened and community involvement in environmental issues has increased. The pipeline industry has responded by attempting to reduce the negative economic and environmental impact of conventional air-cooled heat exchangers, which are characterized by high noise levels, excessive energy consumption, and high maintenance costs. While industry has had limited success in reducing air cooler noise using silencers and timed variable-speed fans, these solutions are costly. The most effective noise reduction method is to reduce or eliminate noise at its source. The primary goals of this investigation were to address key technical issues and to document natural draft aerial cooler (NDAC) design knowledge. The following objectives were identified: - Form a project team from PRCI-recommended aerial cooler manufacturers to design a quiet aerial cooler - Conduct technical and economic analyses to determine the actual operating needs and constraints of NDACs - Conduct market analyses to evaluate and identify the marketing issues associated with NDACs - Document the results of the project in a final report In recent years, the number of environmental permits mandating the use of natural draft aerial coolers to reduce noise has increased. Natural draft aerial cooler technology can potentially eliminate noise and improve operational energy efficiency. A broad group of applications could benefit from this technology, including natural gas, engine jacket water, auxiliary water, and engine lube oil cooling. With noise regulations and penalties becoming increasingly stringent, natural draft heat transfer technology is becoming more important. No organization has as yet fully investigated it. The technical and economic feasibility of NDACs were investigated for natural gas, engine jacket water, auxiliary water, and lube oil cooler applications.
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Yoo, Jun, Hansol Kim, and Shannon Bragg-Sitton. Evaluation of Heat Exchanger Technology for Integrated Energy System. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/2475948.

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Singh, D., W. Yu, and D. France. Integrated Heat Exchanger-Phase Change Material Thermal Energy Storage System. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1814238.

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Singh, Dileep, and Wenhua Yu. Integrated Heat Exchanger/Thermal Energy Storage System for CSP Plants. Office of Scientific and Technical Information (OSTI), 2024. https://doi.org/10.2172/2479346.

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Wang, Lingshi, Brian Bischoff, Aimee L. Church, et al. EXPERIMENTAL INVESTIGATION OF A NOVEL MEMBRANE-BASED CONDENSING HEAT EXCHANGER FOR HIGH EFFICIENCY FURNACES. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1833926.

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Greiner, Miles, Amy Childress, Sage Hiibel, Kwang Kim, Chanwoo Park, and Richard Wirtz. Advanced Heat/Mass Exchanger Technology for Geothermal and Solar Renewable Energy Systems. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1341440.

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Nash, James, and Saroj Bhatta. Development of an Integrated Thermal Energy Storage Heat Exchanger for Concentrating Solar Power. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2348861.

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Chenoweth, J., and M. Wambsganss. DOE/ANL/HTRI (Department of Energy/Argonne National Laboratory/Heat Transfer Research, Inc. ) heat exchanger tube vibration data bank. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6327856.

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Solomon, P. R., Yuxin Zhao, and D. S. Pines. Feasibility study for an advanced coal fired heat exchanger/gas turbine topping cycle for a high efficiency power plant. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/7089854.

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