Academic literature on the topic 'Heat storage – Economic aspects'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Heat storage – Economic aspects.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Heat storage – Economic aspects"
1
Szreder, Mariusz. "Economical and technical aspects of using air heat pumps for hot water." E3S Web of Conferences 46 (2018): 00014. http://dx.doi.org/10.1051/e3sconf/20184600014.
Full textAbstract:
The paper presents selected technical and economic aspects related to the use of air heat pumps for the preparation of domestic hot water DHW. The research shows that heating the water in the 130 dm3 storage tank with the A21/W30-50 profile lasted an average of 130 minutes, and the heat pump consumed about 2.2 kWh of energy per one heating cycle. Heating water in a 130 dm3 storage tank from 25°C to 40°C lasted an average of 60 minutes, while heating water for another 5°C took 30 minutes. The operation of the heat pump in the higher temperature of the water in the storage tank is less effective, making the heating of water in the tank above 50°C is ineffective.
2
Savu, Ionel Danut, Sorin Vasile Savu, Dalia Simion, NicuȘor-Alin Sirbu, Mirela Ciornei, and Sorin Aurel Ratiu. "PP in 3D Printing - Technical and Economic Aspects." Materiale Plastice 56, no. 4 (December 30, 2019): 931–36. http://dx.doi.org/10.37358/mp.19.4.5286.
Full textAbstract:
FDM is 3D printing technology using mainly PLA and ABS as filament materials. PP has close characteristics to PLA and, due to that, is a potential material for for deposition. Paper aims to analyse the behaviour of PP during heating cycle specific to 3D printing process. Macroscopic and microscopic analysis of the deposited strings have been performed. They revealed less stiffness of the PP deposition comparing to PLA, which is due to the lower viscosity of PP. DSC Thermal analysis has been done at it revealed a 30% higher heat flux in PP comparing to PLA and that increases its fluidity. It was recorded a difference between the elongation viscosity of the PP filament and the PP deposited by FDM process. After 5s the deposited PP proves higher values for the elongation viscosity. Dynamic shear rheology measurements the was applied on samples deformed under 210 kN at 190oC. It has been found that the PP requires lower storage energy and that means that it has a lower viscosity for the entire range of applied frequencies. In the same time, the complex viscosities prove different behavior. To improve the control of the deposition shape, it is necessary to reduce the extrusion temperature with 4-5%. That leads to economy in power consumption.
3
Emhofer, Johann, Klemens Marx, Tilman Barz, Felix Hochwallner, Luisa F. Cabeza, Gabriel Zsembinszki, Andreas Strehlow, Birgo Nitsch, Michael Wiesflecker, and Werner Pink. "Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation." Applied Sciences 10, no. 21 (November 6, 2020): 7873. http://dx.doi.org/10.3390/app10217873.
Full textAbstract:
Integration of a three-media refrigerant/phase change material (PCM)/water heat exchanger (RPW-HEX) in the hot superheated section of a heat pump (HP) system is a promising approach to save energy for domestic hot water (DHW) generation in multi-family houses. The RPW-HEX works as a desuperheater and as a latent thermal energy storage in the system. The latent thermal energy storage is charged during heating and cooling operation and discharged for DHW production. For this purpose, the water side of the RPW-HEX is connected to decentralized DHW storage devices. DHW consumption, building standards and climate, energy prices, material costs, and production costs are the constraints for the selection of the optimal storage size and RPW-HEX design. This contribution presents the techno-economic analysis of the RPW-HEX integrated into an R32 air source HP. With the aid of experimentally validated dynamic computer models, the optimal sizing of the RPW-HEX storage is discussed to maximize energy savings and to minimize the investment costs. The results are discussed in the context of a return of investment analysis, practical implementation aspects and energetic potential of the novel technology.
4
Radko, V. "Economic aspects of energy efficiency in Ukrainian agricultural enterprises` dairy farming." Ekonomìka ta upravlìnnâ APK, no. 1 (148) (May 30, 2019): 65–75. http://dx.doi.org/10.33245/2310-9262-2019-148-1-65-75.
Full textAbstract:
It was established that material and technical support of milk production process in agricultural enterprises is an important reserve for increasing economic stability on the basis of creation of high-tech and energy-efficient production management system. The directions of innovative provision of technological processes in dairy farming are outlined: forage conservation; keeping and feeding animals; creation of farms with waste heat utilization, mechanized feeding, milking, waste management (robotic farms); computerization of milk production accounting processes and the prediction of the genetic value of animals; milk quality control by means of electronic means for testing of fat and protein content in milk; systems of cooling and milk storage. It has been proved that energy expenditure in dairy farming depends on a large number of factors, in particular the methods of keeping farm animals and their productivity, the level of mechanization and automation of technological processes on the farm, etc. It is established that in determining the energy costs, energy expenditure is taken into account only for individual, often final, technological operations, resulting in an assessment of the efficiency of milk production that is incomplete, which does not allow to objectively determine the efficiency of technological solutions. Summarizing the aforementioned, it will be grounded that the reduction of energy consumption in the milk production is possible not only on the basis of technical re-equipment of equipment, reconstruction and replacement on the new, but also due to the formation of rational consumer behavior and the development of a sound management policy for the use of energy resources at all stages of production dairy products. It is proposed to create at the agricultural enterprises an appropriate unit for ensuring energy efficiency and the appointment of a manager. Moreover, the responsibility of the manager should be clearly regulated and controlled by the business owners to fulfill all the requirements of energy saving, which should result in the reduction of energy consumption. It is proved that the reduction of energy consumption for milk production is achieved on the basis of providing the microclimate by utilizing the heat that is in the air and is removed from the premises. Key words: dairy farming, agricultural enterprise, energy efficiency, energy resources, energy management.
5
Eveloy, Valerie, and Dereje Ayou. "Sustainable District Cooling Systems: Status, Challenges, and Future Opportunities, with Emphasis on Cooling-Dominated Regions." Energies 12, no. 2 (January 13, 2019): 235. http://dx.doi.org/10.3390/en12020235.
Full textAbstract:
A review of current and future district cooling (DC) technologies, operational, economic, and environmental aspects, and analysis and optimization methodologies is presented, focusing on the demands of cooling-dominated regions. Sustainable energy sources (i.e., renewable, waste/excess electricity and heat, natural/artificial cold) and cooling/storage technology options with emphasis on heat-driven refrigeration, and their integrations in published DC design and analysis studies are reviewed. Published DC system analysis, modeling, and optimization methodologies are analyzed in terms of their objectives, scope, sustainability-related criteria, and key findings. The current and future development of DC in the Gulf Cooperation Council (GCC) region, a major developing cooling-dominated market, is examined more specifically in terms of current and future energy sources and their use, and economic, environmental, and regulatory aspects, with potential technical and non-technical solutions identified to address regional DC sustainability challenges. From the review of published DC design and analysis studies presented, collective research trends in key thematic areas are analyzed, with suggested future research themes proposed towards the sustainability enhancement of DC systems in predominantly hot climates.
6
Demchenko, V. G., and V. Yu Falco. "EXPERIMENTAL RESEARCH OF THERMAL STABILITY OF SUBSTANCES FOR THERMAL ENERGY STORAGE." Thermophysics and Thermal Power Engineering 41, no. 2 (April 26, 2019): 64–71. http://dx.doi.org/10.31472/ttpe.2.2019.9.
Full textAbstract:
Optimizing the storage methods for excess heat energy and associated technical and technological solutions has a significant impact on the development of LHTES systems. New technologies for storing thermal energy are increasingly an alternative to the classic methods of providing thermal infrastructure facilities. In this paper we analyze the results of experimental studies of heat-storage materials for their further integration into the Smart Grid heating system of infrastructure objects and use in the M-TES. The conducted literary review showed that the thermophysical parameters of the investigated substances for the conservation of heat from different authors are very different. We conclude that this is due to the quality of the materials being studied and the errors of laboratory measurements. This negatively affects the design of LHTES systems and greatly complicates the calculation and modeling of heat transfer processes. It is especially important to correctly determine the amount of heat that can be obtained during the charging and discharge cycles of TES, as well as the lifetime of the material that accumulates heat. Therefore, the purpose of this work is to identify the appropriate material for energy storage applications between 0 0C and 115 0C and evaluate it, depending on the thermophysical properties and the time of stable operation. Taking into account the economic aspects, only the available technical materials are considered within the framework of this study, since the choice of material is aimed at the use of M-TES in real conditions of operation. Figure 1 summarizes the results of research on heating and cooling cycles of heats of heat storage substances. High thermal power and, hence, high thermal conductivity are important for the storage efficiency of PCM, especially in the process of solidification, because in a heat transfer predominant solid layer that grows continuously. However, both PCMs are not suitable for mobile thermal storage systems in this form. The huge disadvantages are the emergence of different values of the melting point, the high retention time of both candidates, as well as their prices. Therefore, further research should be directed to eliminate these negative effects. Despite the relatively low density of heat storage with aqueous solutions of antifreeze, they are beneficial candidates for waste heat transfer systems within the framework of this study. Addition of NaCl salt practically does not affect the speed of heating and cooling of the coolant. The addition of bischofite worsens the thermophysical properties of water and shows a small density of heat accumulation. It has been experimentally established that after 3 ... 4 cycles of heating and cooling from a solution of technical bischofite, a dark yellow, insoluble precipitate forms, which creates problems during the operation. Significant increase in TES discharge time was obtained when testing ozokerite. All of the above substances have shown a stable state after 30 cycles of heating / cooling and indicate overcooling below the melting point by about 30 °C. Trihydrate sodium acetate shows no stable results. Subsequently, after 20 cycles of heating and cooling, it loses its properties.
7
Savic, Nemanja, Vladimir Katic, Boris Dumnic, Dragan Milicevic, Zoltan Corba, and Nenad Katic. "The Investment Justification Estimate and Techno-economic and Ecological Aspects Analysis of the University Campus Microgrid." Electronics ETF 23, no. 1 (September 20, 2019): 26. http://dx.doi.org/10.7251/els1923026s.
Full textAbstract:
The paper presents the plan and design of the idea of the microgrid at the Faculty of Technical Sciences in Novi Sad (FTN NS) in the university campus, which is based on the application of several different distributed energy sources. The main distributed energy sources used and planned for the distributed electricity generation in the microgrid “FTN NS” are the photovoltaic power plant with a nominal output of 9.6 kW, a photovoltaic power plant with a nominal output power of 16.3 kW, a wind power plant with a nominal output power of 2 kW, a cogeneration plant for combined heat and power production of the nominal output power of 10 kWe + 17.5 kWt, two electric vehicles of 4 kW and 2.5 kW power, and battery energy storage system with a total capacity of 36 kWh. The paper describes the main technical characteristics, the estimation of electricity generation and the estimation of the amount of non-polluted gaseous greenhouse effect for each distributed source of energy. In order to verify the justification of the application of the proposed microgrid concept, a detailed techno-economic and ecological analysis of the aspects of the application of distributed energy sources in the microgrid “FTN NS” was carried out in the paper.
8
Nemś, Magdalena, Artur Nemś, and Kamila Gębarowska. "The Influence of the Shape of Granite on the Heat Storage Process in a Rock Bed." Energies 13, no. 21 (October 29, 2020): 5662. http://dx.doi.org/10.3390/en13215662.
Full textAbstract:
Granite is one of those materials that due to its thermal parameters is used as a filling for storage beds, including high-temperature ones. The article analyzes local material that was extracted in Strzegom, Poland. The purpose of the paper is the assessment of storage material with regard to its cooperation with a heat source that is available for a short time, e.g., a solar installation. Three different shapes of granite material were tested: rock, cube and sphere. Each shape has its advantages and disadvantages, which are associated with economic and strength aspects. The article presents experimental tests of the material, which were conducted in order to determine the efficiency of the charging process. The results show that rock-shaped granite filling elements are characterized with the best parameters during the charging process, and that they obtained the highest first- and second-law efficiency in the entire tested range of inlet air temperature and flow rate. The efficiency of the cube-shaped granite was lower than the sphere-shaped granite. This means that the efficiency does not directly depend on the coefficient of sphericity of the elements that fill the storage bed. The determination of the second law efficiency showed that the highest use of energy supplied with hot air occurs after 1 h of charging the accumulator in the case of all the analyzed geometries. At the end of the paper, the influence of the obtained results on the process of modelling the charging of a storage bed filled with elements of non-spherical geometry is also discussed.
9
Panchenko, Olga, Maryna Domashenko, Oleksii Lyulyov, Nataliya Dalevska, Tetyana Pimonenko, and Natalia Letunovska. "Objectivation of the Ecological and Economic Losses from Solid Domestic Waste at the Heating Enterprises." Management Systems in Production Engineering 29, no. 3 (June 24, 2021): 235–41. http://dx.doi.org/10.2478/mspe-2021-0029.
Full textAbstract:
Abstract The aim of this research is to study theoretical and practical aspects of the ecological and economic losses from the use of solid domestic waste (SDW) as energy resources in the heat power industry of Ukraine. The methodical approaches to evaluating the ecological and economic losses caused by solid domestic waste (SDW) comprise: the developed algorithm, which evaluates the ecological and economic losses in the SDW use as fuel and energy resources in comparison with basic and project variant; the investigated morphological composition of SDW in the Ukrainian regions, on the basis of which there is proposed a matrix for further calculations of the ecological and economic loss from atmospheric pollution as a result of the energy-intensive SDW combustion at the power plants by the Ukrainian regions. The efficiency of using SDW as secondary energy resources, which essentially depends on the conventional energy resources combustion, is proved. According to the chemical and morphological composition of SDW, the average amount of harmful substances by their element constituents of SDW is determined. The economic loss from the combusting 1 ton of SDW as energy resources is estimated. Reasonability of using SDW as energy resources, based on the optimal ratio between conventional resources and energy-intensive SDW through minimizing total production costs and possible ecological and economic loss, is grounded. It is proved that while estimating the ecological and economic losses, it is necessary to consider the SDW morphological composition and regional specific features regarding the location of heat and power enterprises and organized storage landfills. It is grounded that the obtained estimates of the ecological and economic losses may be used for identifying the ecological and economic evaluation of the SDW efficiency use in the heat power industry at the regional level.
10
Brumana, Giovanni, Giuseppe Franchini, Elisa Ghirardi, and Antonio Perdichizzi. "Analysis of Solar District Cooling systems: the Effect of Heat Rejection." E3S Web of Conferences 197 (2020): 08018. http://dx.doi.org/10.1051/e3sconf/202019708018.
Full textAbstract:
The paper presents the performance assessment of a solar district cooling system with special attention to the heat rejection process. The investigation includes energetic, economic and environmental aspects. The district cooling network is driven by two-stage Li-Br absorption chillers coupled with parabolic trough solar collectors. The whole system, including solar field, storage tanks and chilled water pipeline, has been modelled in Trnsys. The focus is on the heat rejection systems, and their impact on the performance of the cooling plant. Four different types of heat rejection systems are considered: Air Cooling (AC), Evaporative Cooling Tower (ECT), Groundwater Heat Exchanger (GHE) and Geothermal Boreholes (GB). The paper presents two case studies in the Gulf region: the warm climate is compared for two condition of humidity, dry (Riyadh) and humid (Abu Dhabi). Furthermore, the work presents a multivariable optimization procedure based on GenOpt software interacting with Trnsys model under the constraint of a 70% annual solar fraction. The best option resulted to be the one based on absorption chillers coupled with Groundwater Heat Exchanger in both locations. The annual power consumption is reduced by 83% in Abu Dhabi and 82% in Riyadh compared to conventional cooling systems.
Dissertations / Theses on the topic "Heat storage – Economic aspects"
1
Kerr, Chadwick G. "Hypothermia during Olympic triathlon : influence of body heat storage during the swimming stage." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1014852.
Full textAbstract:
The purpose of this study was to determine if mild heat stress induced by wearing a wet suit while swimming in relatively warm water (25.4 ± 0.1°C) increases the risk of heat injury during the subsequent cycling and running stages. Specificlly, during an Olympic distance triathlon in a hot and humid environment (32°C & 65% RH). Five male triathletes randomly completed two simulated triathlons (Swim=30 min; Bike=40 km; Run=10 km) in the laboratory using a swimming flume, cycle ergometer, and running treadmill. In both trials, all conditions were identical, except for the swimming portion in which a full length, sleeveless neoprene wet suit was worn during one trial (WS) and a competitive brief swimming suit during the other (SS). The swim portion consisted of a 30 min standardized swim in which oxygen consumption (V02) was replicated, regardless of WS or SS. During the cycling and running stages, however, the subjects were asked to complete the distances as fast as possible. Core Temperature (T) was not significantly different between the SS and WS trials at any time point during the triathlon. However, mean skin temperature (TSk) and mean body temperature (Tb) were higher (p<0.05) in the WS at 15 (TSk=+4.1°C, Tb=+1.5°C) and 30 min (TSk=+4°C, Tb=+1.6°C) of the swim. These TSk and Tb differences were eliminated by 15 min of the cycling stage and remained similar (p>0.05) through the end of the triathlon. Moreover, there were no differences (p>0.05) in V02, heart rate (HR), rating of perceived exertion (RPE), or thermal sensation (TS) between the WS and SS. Additionally, no significant differences were found in cycling (SS=1:14:46 ± 2:48 vs. WS=1:14:37 ± 2:54 min), running (SS=55:40 ± 1:49 vs. WS=57:20 ± 4:00 min) or total triathlon times (SS=2:40:26 ± 1:58 vs. WS=2:41:57 ± 1:37 min). Therefore, the primary finding was that wearing a wet suit during the swimming stage of an Olympic distance triathlon in 25.4°C water does not adversely affect the thermal responses or the triathlete's ability to perform on the subsequent cycling and running stages.School of Physical Education
2
Chiu, Justin NingWei. "Heat Transfer Aspects of Using Phase Change Material in Thermal Energy Storage Applications." Licentiate thesis, KTH, Kraft- och värmeteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-34263.
Full textAbstract:
Innovative methods for providing sustainable heating and cooling through thermal energy storage (TES) have gained increasing attention as heating and cooling demands in the built environment continue to climb. As energy prices continue to soar and systems reach their maximal capacity, there is an urgent need for alternatives to alleviate peak energy use. TES systems allow decoupling of energy production from energy utilization, both in location and in time. It is shown in this thesis that successful implementation of TES in the built environment alleviates peak energy load and reduces network expansion as well as the marginal energy production cost. This thesis analyzes phase change material (PCM) based TES systems in terms of material property characterization, numerical modeling and validation of thermal storage, as well as case specific techno-economic feasibility studies of system integration. The difficulties identified in latent heat TES design, such as heat transfer aspects, subcooling and identification of phase separation, have been analyzed through Temperature-History mapping and TES numerical modeling with experimental validation. This work focuses on the interdependency between resource availability, thermal charge/discharge power and storage capacity. In a situation where resource availability is limited, e.g. when using free cooling, waste heat or off-peak storage, the thermal power and storage capacity are strongly interrelated and should always be considered in unison to reach an acceptable techno-economic solution. Furthermore, when considering TES integration into an existing thermal energy distribution network, three adverse aspects are revealed in the Swedish case study: the single tariff system, the low-return temperature penalty, and the low storage utilization rate. These issues can be overcome through better adapted policies and optimized storage control strategies. Finally, despite the currently unfavorable conditions in the Swedish energy system, it is shown that TES has the potential to mitigate climate change through greenhouse gas emission reduction by displacing fossil-fuel based marginal thermal energy production.QC 20110629
Cold Thermal Energy Storage
3
Nuutinen, Antti, and Giovanni Graziano. "Towards Flexible Cogeneration: Techno-economic Optimization of Advanced Combined Cycle Combined Heat and Power Plants integrated with Heat Pumps and Thermal Energy Storage." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235820.
Full textAbstract:
The liberalization of electricity markets and a growing penetration of renewables is changing operation of electrical grids. The boundary conditions for the operation of conventional power plants are changing and, as such, an improved understanding of the varying loads and prices on the electricity grid is required to assess the performance of emerging combined cycle gas turbine (CCGT) concepts and to further optimize their design for these new markets in the pursuit of increasing their profitability, especially when considering combined heat and power (CHP). To increase the flexibility of CCGT-CHP plants, three new plant layouts have been investigated by integrating different storage concepts and heat pumps in key sections of the traditional plant layout. The present study analyses the influence that market has on determining the optimum CCGT-CHP plant layout that maximizes profits (in terms of plant configuration, sizing and operation strategies) for a given location nearby Turin, Italy, for which hourly electricity and heat prices, as well as meteorological data, have been gathered. A multi-parameter approach for design and operation was followed using KTH’s and EPS’ techno-economic modeling tool DYESOPT. Results are shown by means of a comparative analysis between optimal plants found for each layout and the state-of-the art CCGT-CHP. It is shown that a plant configuration in which a cold storage unit is integrated together with a heat pump at the inlet of the gas turbine unit increases the net present value of the plant by approximately 0.3% when compared against conventional plant layouts. Using the same concept with a heat pump alone can improve lifetime profitability by 1.6%. A layout where district heating supply water is preheated with a combination of a heat pump with hot thermal tank increases plant profitability by up to 0.5%. This work has been performed as part of the PUMP-HEAT project, an EU Horizon 2020 research project in which KTH collaborates with other 13 stakeholders including industry and research institutions. The results will directly influence future work of the project.
4
Trahan, Jamie. "A Technical and Economic Comparative Analysis of Sensible and Latent Heat Packed Bed Storage Systems for Concentrating Solar Thermal Power Plants." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5598.
Full textAbstract:
Though economically favorable when compared to other renewable energy storage technologies, thermal energy storage systems for concentrating solar thermal power (CSP) plants require additional cost reduction measures to help transition CSP plants to the point of grid-parity. Thermocline packed bed storage is regarded as one potential low cost solution due to the single tank requirement and low cost storage media. Thus sensible heat storage (SHS) and latent heat storage (LHS) packed bed systems, which are two thermocline varieties, are frequently investigated. LHS systems can be further classified as single phase change material (PCM) systems or cascaded systems wherein multiple PCMs are employed.
This study compared the performance of SHS, single PCM, and cascaded PCM direct storage systems under the conditions that may be encountered in utility-scale molten salt CSP plants operating between 565°C and 288°C. A small-scale prototype SHS packed bed system was constructed and operated for use in validating a numerical model. The drawbacks of the latent heat storage process were discussed, and cascaded systems were investigated for their potential in mitigating the issues associated with adopting a single PCM. Several cascaded PCM configurations were evaluated. The study finds that the volume fraction of each PCM and the arrangement of latent heat in a 2-PCM and a 3-PCM system influences the output of the system, both in terms of quality and quantity of energy. In addition to studying systems of hypothetical PCMs, real salt PCM systems were examined and their selection process was discussed.
A preliminary economic assessment was conducted to compare the cost of SHS, single-PCM LHS, cascaded LHS, and state-of-the-art 2-tank systems. To the author's knowledge, this is the first study that compares the cost of all three thermocline packed bed systems with the 2-tank design. The SHS system is significantly lower in cost than the remaining systems, however the LHS system does show some economic benefit over the 2-tank design. If LHS systems are to be viable in the future, low cost storage media and encapsulation techniques are necessary.
5
Lantz, Martin. "Azelio’s Thermal Battery for Combined Heat and Power : A Thermo-economic and Market Research Study." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280470.
Full textAbstract:
The objective of this thesis was to assess the market opportunities for two novel Carnot battery system solutions, one supplying power and low temperature heat as well as a system supplying medium temperature heat exclusively. To fulfill the objective, a methodology was developed and implemented to investigate the market potential, further two techno-economic models were developed and utilized to investigate the performance of such Carnot battery solutions. Based on the market review four industrial sectors were identified as most interesting and the geographical scope was confined to Europe. Further, case studies were developed to mimic two different sizes of manufacturing plants, a small and large, for the identified sectors. The cases were then implemented to the techno-economic analysis to compare the performance of a new Carnot battery system against the conventional energy solutions. The identified market offers a vast opportunity for incorporating Carnot battery solutions to meet the industrial sectors requirements, both from a technical and market size perspective. The market review combined with the techno-economic analysis indicates that the heat market is interesting as long as fuel, power grid costs and industrial operations are at the ideal level. For the Carnot battery system supplying both power and heat, it was found that yearly cost savings in the range of 10-15 % could be achieved for the identified market. The added value of incorporating heat generation and surplus power from PV had a strong effect on the business case. Through sensitivity analysis it was approximated that locations in central/south Europe with global horizontal irradiance (GHI) above 1500 kWh/m2 would benefit from the solution. For the Carnot battery system supplying medium temperature heat it was found that solutions would struggle with feasibility for the given market conditions. Through sensitivity it was found that locations with GHI higher than 2100 kWh/m2 would benefit from the solution. For both models it was found that the hybrid solution, Carnot battery combined with on-site PV, yields the most feasible solution for the end user, compared to charging the Carnot storage system from the power grid. Both models were sensitives to changes in energy cost for operating the old conventional system as well as operations times of the industries. The availability of space is a major constraint to implement Carnot battery solutions, as both the Carnot battery as well as PV plant require substantial space. It was found through literature and interviews that industries with close proximity to end customer and which faces pressure to decarbonize, may be most interesting to target, as for e.g. the Food and beverage sector.Syftet med denna uppsats var att undersöka marknadspotentialen för två stycken Carnot batterisystem, ett system som generar både el och låg tempererad värme och ett som endast generar medel tempererad värme. För att uppnå målet så utvecklades och implementerades en metod för att undersöka marknadspotentialen, vidare så utvecklades och användes två tekno-ekonomiska modeller för att undersöka prestandan för de två Carnot lösningarna. Baserat på marknadsundersökningen så identifierades fyra industriella sektorer som mest intressanta och baserat på dem begränsades omfattningen av studien till Europa. Från marknadsgenomsökningen och de identifierade industriella sektorerna skapades två olika profiler för att representera en liten och stor industri för de identifierade sektorerna. Profilerna användes som utgångspunkt för den tekno-ekonomiska analysen för att jämföra prestandan hos ett nytt Carnot batterisystem mot konventionella energilösningar. Den identifierade marknaden erbjuder en stor möjlighet för att integrera Carnot batterilösningar för att möta industrisektorns krav, både ur ett tekniskt perspektiv och med tanke på marknadensstorleken. Marknadsundersökningen kombinerat med tekno-ekonomiskanalysen indikerar att värmemarknaden för industrier är intressant så länge bränsle- och elkostnader samt drifttiden är i rättnivå. Resultat från analysen tyder på att Carnot batterilösningar, som generar både el och värme, kan skapa energikostnadsbesparingar runt 10–15 % för den identifierade marknaden. Värdet av att addera kassaflöden från överskotts el från solcellerna samt värmegenerering har en stark påverkan på resultaten. Från en känslighetsanalys gick det att identifiera centrala/södra Europa som platser med tillräcklig solinstrålning (runt 1500 kWh/m2) för att dra nytta av ett Carnot batteri. För Carnot batterisystemet som endast producerar medel tempererad värme så skapas inga energikostandsbesparingar för slutanvändaren för den analyserade marknadsförutsättningarna. Genom en känslighetsanalys gick det att fastställa att hög solinstrålning krävs (över 2100 kWh/m2) för att slutanvändaren ska skapa några besparingar med systemet. För båda modellerna generade en hybridsystemlösning med både Carnot batteri samt lokal solcellsanläggning de bästa resultaten, jämfört med om systemet skulle laddas från elnätet. Båda modellerna är känsliga mot förändringar i energikostnader, värme eller el, för det konventionella systemet samt lägre drifttid. Vidare så är tillgänglig yta en annan restriktion som både kan hindra implementeringen av Carnot batteriet samt också solcellsanläggningen. Både litteraturstudien och de genomförda intervjuerna tyder på att industrier som har nära kontakt med slutkonsumenten och som har krav på att reducera sin miljöpåverkan, är en intressant användare av ett Carnot batterilösning, som exempelvis livsmedelsindustrin.
6
Beltran, Francisco, and Lesley Fisher. "Techno-Economic Analysis of Solar Photovoltaic and Heat Pump Systems for a North Macedonian Hospital." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264241.
Full textAbstract:
The International Energy Agency’s Global Status Report 2017 estimates that existing buildings must undergo deep energy renovations, which reduce the energy intensity of buildings by 50% - 70% in order to achieve the “Beyond 2°C” scenario [1]. Many buildings in Bitola, The Republic of North Macedonia, will need considerable upgrades to meet these goals. Among them, health care facilities and education centers have the greatest potential, with energy savings that could reach 35 to 40% [2]. PHI Clinical Hospital Bitola is the largest health care facility in the southwestern region of North Macedonia with a capacity of 500 beds, providing care to almost 300.000 patients annually. It has a heating system based on heavy fuel oil, and an inefficient distribution system which has not been upgraded since the 1970s. There is no centralized ventilation or cooling systems, making it necessary to open and close windows in order to regulate the indoor temperature and generate natural ventilation. This study aims to replace the use of heavy fuel oil (HFO), reduce building related GHG emissions, and increase the primary renewable energy fraction of PHI Clinical Hospital Bitola, by investigating a replacement energy system using heat pumps and solar energy. Special consideration is given to increasing the level of comfort of patients and improving the safety of the indoor environment. Space conditioning, domestic hot water, and electricity demands for three critical buildings are considered in Polysun over a 1-year period. The costs and benefits of technologies including air and ground source heat pumps, solar photovoltaics, and ice thermal energy storage are analyzed. It is determined which of these technologies can be implemented in an energy and cost-efficient manner in the Republic of North Macedonia, thus contributing to the reduction of building related greenhouse gas emissions and other pollutants that contribute to poor air quality. Ground source heat pumps perform superior to air source heat pumps, however, the total life cycle costs of ground source heat pump systems are much higher than air source heat pump systems, making the marginal gains in the technical performance not worth the investment in a borehole field. When using ice thermal energy storage within the cooling and domestic hot water systems the benefits of improved heat pump performance and reduced electricity consumption are not observed. The configuration of thermal storage tested here uses the domestic hot water system to withdraw heat from the thermal storage tank, creating ice, which is then used to decrease the need for cooling using the chiller. However, the cooling load is much larger than the hot water demand, and so any ice generated in the tank is depleted within the first few days of cooling. Many other configurations and control strategies for thermal storage exist which could be the subject of further research. When selecting a renewable energy system that could replace the current HFO boiler in the hospital, the results of this study suggest that an air source heat pump system with solar PV is the recommended solution. For buildings 1 and 2, the final results achieved a primary renewable energy fraction of 62%, a GHG emissions savings of 840 tons of CO2eq equating to a 26% reduction, coming at a capital cost of nearly 2,7 million €, and reducing annual energy expenses by 47%. For building 4 the final system delivers a primary renewable energy fraction of 64%, GHG emissions savings of 109 tons CO2eq or 17%, while costing 0,67 million € in capital expenses and lowering annual energy expenses by 50%.Den internationella energi byråns globala status rapport 2017 uppskattar att existerande byggnader måste undergå djupgående energi renovationer, som ska reducera byggnadernas energiintensitet med 50% - 70% för att uppnå i scenariot “Beyond 2°C” [1]. Många byggnader i Bitola (Republiken av nora Makedonien), kommer att behöva betydande uppgraderingar för att uppfylla dessa mål. Bland dem har hälsovårdsanläggningar och utbildningscenter den största potentialen, med energi besparingar där dessa kan uppnå 35% till 40% [2]. PHI Kliniskt Sjukhus Bitola är den största sjukvårdsanläggningen i den sydvästra regionen av Nora Makedonien med en kapacitet på 500 sängplatser, som ger vård till nästan 300.000 patienter årligen. Det nuvarande värmesystemet är baserat på tung eldningsolja och ett ineffektivt distributionssystem som inte har uppdaterats sedan 1970-talet. Det finns inga centraliserade ventilations- och kylsystem, vilket gör det nödvändigt att öppna och stänga fönster för att reglera inomhustemperaturen och generera naturlig ventilation. Denna studie syftar till att ersätta användningen av tung eldningsolja, minska byggnadsrelaterade växthusutsläpp och öka den primära förnyelsebara energifraktionen av Kliniskt Sjukhus Bitola. Genom att undersöksöka ett ersättande energisystem med värmepumpar och solenergi. Särskild hänsyn tas till öka patienternas komfort och förbättra säkerheten i inomhusmiljön. Värme och kyla, varmvatten och el-krav för tre kritiska byggnader betraktas i Polysun under en 1- års period. Kostnaderna och fördelarna med tekniken inklusive luft och markvärmepumpar, solceller och termisk energilagring analyseras. Det fastställs vilken av dessa tekniker som kan implementeras på ett energi- och kostnadseffektivt sätt i Republiken av nora Makedonien, vilket bidrar till att minska byggnadsrelaterade växthusgasutsläpp och andra föroreningar som kan bidra till dålig luftkvalitet. Markvärmepumpar har högre prestanda än luftvärmepumpar, men de totala livscykelkostnaderna för ett markvärmepumpsystem är mycket högre än för ett luftvärmepumpsystem. Vilket gör den marginella vinsterna för den tekniska prestandan inte värda investeringen av ett borrhåls fält. Vid användning av is som termisk energilagring och kylning och varmvattensanläggningar, tog ingen hänsyn till fördelarna med en förbättrad värmepumps prestanda och minskad elförbrukning. Konfigurationen av termisk lagring som testas här använder det inhemska varmvattensystemet för att ta bort värme från den termiska lagringstanken, vilket skapar is som sedan används för att minska behovet av nedkylning av byggnaden. Kylbelastningen är emellertid mycket större än varmvattenbehovet. Vilket betyder att all is som genereras i tanken används upp efter några dagar av kylning. Många andra konfigurationer och styrstrategier för termisk lagring finns och kan vara till ändamål för framtida forskning. När val av ett förnybart energisystem görs som ska kunna ersätta den nuvarande tung eldningsolja pannan på sjukhuset antyder resultatet av denna studie att ett värmepumpsystem med luftkälla och sol-PV är den rekommenderade lösningen. För byggnad 1 och 2 uppnådde det slutliga resultatet en primär förnyelsebar energifraktion på 62%, vilket skulle innebära en besparing av växthusgasutsläpp med 840 ton CO2 ekvivalenter. Vilket motsvarar en minskning med 26%, med en kapitalkostnad på nästan 2,7 miljoner €. Samt minskade årliga energikostnader med 47%. För byggnad 4 levererar det slutliga systemet en primär förnybar energifraktion på 64%, med en -5- besparing av växthusutsläpp på 109 ton CO2 ekvivalenter eller 17%. Medan det kostar 0,67 miljoner € i kapitalutgifter och sänker den årliga energikostnaden med 50%.
7
Jones, Sophia Christina Acle. "Micro-cogeneration optimal design for service hot water thermal loads." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/16016.
Full text
8
Farahmand, Ghaffarpour Mehdi, and Henrik Ros. "Integration of thermochemical heat storage with a municipal district heating system : In future scenario with large variations in electricity price." Thesis, Mälardalens högskola, Framtidens energi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-39775.
Full textAbstract:
This thesis investigates the feasibility and benefits of integrating Thermochemical heat Storage (THS) into a CHP (Combined Heat and Power) plant. A case study is done for the CHP-plant in Sala, Sweden, with a maximum heat output of 20.9 MW and maximum electricity output of 9.6 MW. The THS type considered is calcium oxide in a hydroxide system. The fluctuations in electricity price for years 2020, 2030 and 2040 are considered and low-price electricity is used as a charging source for THS. During charging the superheated steam (endothermic reaction) is used to cover some of the district heating demand. The high temperature discharge from the THS is used as reheat in the Rankine cycle. The operations are modeled in Ebsilon and optimization is done in MATLAB using genetic algorithm with the objective to achieve maximum annual revenue. The results suggest that it is not feasible to introduce THS with electricity as a charging source in year 2020, but in 2030 and 2040 THS shows promising potential. The biggest increase in revenue comes from reduced fuel consumption, and, to a lesser extent, increased income from electricity. It is concluded that Calcium hydroxide is a promising candidate for integration into CHP during large electricity price fluctuation. The main drivers for the feasibility of this combination are high fuel price and large fluctuations of electricity price.
9
Thompson, Paul S. "The economic impacts of alternative underground storage tank regulations on the vulnerable segments of the retail motor fuel market in Virginia." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/80098.
Full textAbstract:
The passage of the Hazardous and Solid Waste Amendments of 1984 (HSWA) and the Superfund Amendments and Reauthorization Act of 1986 (SARA) amended subtitle I of the Resource Conservation and Recovery Act (RCRA). RCRA now requires the Environmental Protection Agency (EPA) to promulgate regulations applicable to all owners and operators of underground storage tanks (USTs) containing petroleum products, and substances listed as hazardous in the Comprehensive Environmental Response Compensation and Liability Act, but not regulated as hazardous waste under RCRA subtitle C. On 17 April 1987, EPA issued proposed regulations for leak detection, leak prevention, financial responsibility and corrective action for USTs containing regulated substances.
Concern over potential adverse economic impacts caused by UST regulation has centered on the retail motor fuel market, due primarily to its large size and relatively large number of small businesses. While public and private studies have been conducted concerning the economic impact of UST regulation on the retail motor fuel market, a need for additional research is indicated.
This thesis presents the findings to date of a study examining the economic impacts that alternative UST regulatory programs would have on the retail motor fuel market in the United States, with emphasis, where possible, on this market in Virginia. The market is broken into five segments based on similar economic and management characteristics. The segment most likely to contain significant numbers of firms that could be forced out of business due to UST regulation is identified. Proposed minimum federal UST regulations are described and relevant regulatory costs are presented. Three additional UST regulatory programs are developed representing varying degrees of stringency relative to the proposed minimum federal regulations. Case studies of firms located in the vulnerable segment of the retail motor fuel market identified earlier are analyzed in terms of the effect that alternative UST regulations would have on yearly owner remuneration (which is defined to include both the return to the owner as a factor of production and the profit remaining after all returns to land, capital, and labor have been paid). Hypothetical firms with profit levels determined by EPA as average for two segments of the regulated community are analyzed in a similar fashion to reflect the effect of alternative UST regulations on profits.Master of Urban and Regional Planning
10
Senda, Franck Mulumba. "Aspects of waste heat recovery and utilisation (WHR&U) in pebble bed modular reactor (PBMR) technology." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19957.
Full textAbstract:
Thesis (MScEng)--Stellenbosch University, 2012.ENGLISH ABSTRACT: The focus of this project was on the potential application of waste heat recovery and utilisation (WHR&U) systems in pebble bed modular reactor (PBMR) technology. The background theory provided in the literature survey showed that WHR&U systems have attracted the attention of many researchers over the past two decades, as using waste heat improves the system overall efficiency, notwithstanding the cost of extra plant. PBMR waste heat streams were identified and investigated based on the amount of heat rejected to the environment. WHR&U systems require specially designed heat recovery equipment, and as such the used and/or spent PBMR fuel tanks were considered by the way of example. An appropriately scaled system was designed, built and tested, to demonstrate the functioning of such a cooling system. Two separate and independent cooling lines, using natural circulation flow in a particular form of heat pipes called thermosyphon loops were used to ensure that the fuel tank is cooled when the power conversion unit has to be switched off for maintenance, or if it fails. A theoretical model that simulates the heat transfer process in the as-designed WHR&U system was developed. It is a one-dimensional flow model assuming quasi-static and incompressible liquid and vapour flow. An experimental investigation of the WHR&U system was performed in order to validate the theoretical model results. The experimental results were then used to modify the theoretical heat transfer coefficients so that they simulate the experiments more accurately. Three energy conversion devices, the dual-function absorption cycle (DFAC), the organic Rankine cycle (ORC) and the Stirling engine (SE), were identified as suitable for transforming the recovered heat into a useful form, depending on the source temperatures from 60 ºC to 800 ºC. This project focuses on a free-piston SE with emphasis on the thermo-dynamic performance of a SE heat exchanger. It was found that a heat exchanger with a copper woven wire mesh configuration has a relatively large gas-to-metal and metal-to-liquid heat transfer area. Tube-in-shell heat exchanger configurations were tested, with the working fluid flowing in ten copper inner pipes, while a coolant flows through the shell tube. A lumped parameter model was used to describe the thermo-fluid dynamic behaviour of the SE heat exchanger. In order to validate the theoretical results, a uni-directional flow experimental investigation was performed. The theoretical model was adjusted so that it simulated the SE heat exchanger. It was found that after this correction the theoretical model accurately predicts the experiment. Finally, a dynamic analysis of the SE heat exchanger experimental set-up was undertaken to show that, although vibrating, the heat exchanger setup assembly was indeed acceptable from a vibrational and fatigue point of view.
AFRIKAANSE OPSOMMING: Die hoofoogmerk met hierdie projek was die moontlike aanwending van afvalhitteherwinningen- benutting-(WHR&U-) stelsels in modulêre-gruisbedreaktor-(PBMR-) tegnologie. Agtergrondteorie in die literatuurondersoek toon dat WHR&U-stelsels al menige navorser se belangstelling geprikkel het, hetsy vanweë die moontlike ekonomiese voordele wat dit inhou óf vir besoedelingsvoorkoming, bo-en-behalwe die koste van bykomende toerusting. Die PBMRafvalhittestrome is ondersoek en bepaal op grond van die hoeveelheid hitte wat dit na die omgewing vrystel. Om in die prosesbehoeftes van WHR&U-stelsels te voorsien, moet goed ontwerpte, doelgemaakte hitteherwinningstoerusting in ʼn verkoelings- en/of verhittingsproses gebruik word, dus is die PBMR as voorbeeld gebruik vir die konsep. ʼn Toepaslik geskaleerde WHR&U-stelsel is dus ontwerp, gebou en getoets om die geldigheid van die stelselontwerp te toon. Twee onafhanklike verkoelingslyne, wat van natuurlike konveksie gebruik maak, in die vorm van hitte-pype of termoheuwel lusse, was gebruik om te verseker dat verkoeling verskaf word wanneer die hoof lus breek of instandhouding nodig hê. ʼn Teoretiese model is ontwikkel wat die hitteoordragproses in die ontwerpte WHR&U-stelsel simuleer. Dié model was ʼn eendimensionele vloeimodel wat kwasistatiese en onsamedrukbare vloeistof- en dampvloei in die WHR&U-stelsel-lusse veronderstel. ʼn Eksperimentele ondersoek is op die WHR&U-stelsel uitgevoer ten einde die teoretiese model se resultate te bevestig. Die eksperimentele resultate was dus geneem om die teoretiese hitteoordragkoëffisiënte aan te pas sodat dit die eksperimente kon simuleer. Drie energieomsettingstoestelle, naamlik die dubbel funksie absorpsie siklus (DFAC), die organiese Rankine siklus (ORC) en die Stirling enjin (SE), is as geskikte toestelle uitgewys om die herwonne hitte op grond van brontemperature tussen 60 ºC en 800 ºC in ʼn bruikbare vorm om te sit. Hierdie tesis het op vryesuier-SE’s gekonsentreer, met klem op die hitteruiler. Meer bepaald is die termodinamiese werkverrigting van ʼn SE-hitteruiler ondersoek. Daar is bevind dat ʼn hitteruiler met ʼn geweefde koperdraadmaas-samestelling oor ʼn betreklik groot gas-totmetaal- en metaal-tot-vloeistof-oordragoppervlakte beskik. Die verhitter en verkoeler is in ʼn buis-in-mantel-vorm ontwerp, met die werksvloeistof wat deur tien koperbinnepype vloei en ʼn koelmiddel deur die mantelbuis. ʼn Saamgevoegde-parameter-model is gebruik om die termodinamiese gedrag van die SEhitteruiler te beskryf. Ten einde die teoretiese resultate te bevestig, is ʼn eenrigtingvloeiproefondersoek uitgevoer. Die teoretiese model is aangepas sodat dit die SE-hitteruiler kon simuleer. Ná die nodige verstellings is daar bevind dat die teoretiese model die proefneming akkuraat voorspel. Laastens was ʼn dinamiese ontleding van die SE-hitteruiler ook onderneem om te toon dat, hoewel dit vibreer, die hitteruiler proef samestel inderdaad veilig is.
Books on the topic "Heat storage – Economic aspects"
1
Kusto, Zdzisław. Uwarunkowania ekonomicznej efektywności pomp ciepła. Gdańsk: Wydawn. IMP PAN, 2000.
Find full text
2
Andersson, Olof. Scaling and corrosion: Annex VI : environmental and chemical aspects of thermal energy storage in aquifers. Stockholm, Sweden: Swedish Council for Building Research, 1992.
Find full text
4
Oppenheimer, Michael, and Michael Oppenheimer. Dead heat: The race against the greenhouse effect. New York: Basic Books, 1990.
Find full text
5
Turner, Mandy. Costs of disarmament: Cost benefit analysis of SALW destruction versus storage. Geneva: United Nations, 2006.
Find full text
6
H, Boyle Robert, ed. Dead heat: The race against the greenhouse effect. London: Tauris, 1990.
Find full text
7
The demand for public storage of wheat in Pakistan. Washington, D.C: International Food Policy Research Institute, 1989.
Find full text
8
The economics of power storage: Theory and empirical analysis for Central Europe. München: Oldenbourg Industrieverlag, 2008.
Find full text
9
Environment, Alberta Alberta. Preliminary financial and economic analysis of storage alternatives in Willow Creek Basin. [Edmonton?: Alta. Environment?], 1985.
Find full text
10
Rolfe, Chris. Turning down the heat: Emissions trading and Canadian implementation of the Kyoto Protocol. Vancouver, Canada: West Coast Environmental Law Research Foundation, 1998.
Find full textBook chapters on the topic "Heat storage – Economic aspects"
1
Berg, C. A. "Economic Aspects of Energy Storage." In Energy Storage Systems, 695–702. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2350-8_33.
Full text
2
Dincer, Ibrahim, and Mehmet Akif Ezan. "Fundamental Aspects of Thermodynamics and Heat Transfer." In Heat Storage: A Unique Solution For Energy Systems, 1–34. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91893-8_1.
Full text
3
Mishra, Laxman, Abhijit Sinha, Prasanta Majumder, and Rajat Gupta. "Energy Storage Using Sensible Heat Storage Media: Thermal and Economic Considerations." In Lecture Notes in Mechanical Engineering, 41–50. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-7711-6_5.
Full text
4
Sapienza, Alessio, Andrea Frazzica, Angelo Freni, and Yuri Aristov. "Adsorptive Heat Transformation and Storage: Thermodynamic and Kinetic Aspects." In Dynamics of Adsorptive Systems for Heat Transformation, 1–18. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-51287-7_1.
Full text
5
Castronuovo, Edgardo D., and J. Usaola. "Coordination Between Wind Farms and Storage Devices, Technical and Economic Aspects." In Handbook of Wind Power Systems, 591–622. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41080-2_17.
Full text
6
Kempka, Thomas, Rainer Herd, Ernst Huenges, Ricarda Endler, Christoph Jahnke, Silvio Janetz, Egbert Jolie, et al. "Joint Research Project Brine: Carbon Dioxide Storage in Eastern Brandenburg: Implications for Synergetic Geothermal Heat Recovery and Conceptualization of an Early Warning System Against Freshwater Salinization." In Geological Storage of CO2 – Long Term Security Aspects, 183–208. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13930-2_9.
Full text
7
Nayak, Chinmay Kumar, and Manas Ranjan Nayak. "Battery Energy Storage System for Solar PV and Wind Power Smoothing Considering Economic Aspects." In Lecture Notes in Electrical Engineering, 157–68. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6772-4_15.
Full text
8
"Technical and Economic Aspects." In Converter-Interfaced Energy Storage Systems, 31–48. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781108363266.003.
Full text
9
Aronsson, Stefan, and Per-Erik Nilsson. "HEAT PUMPS WITH SEASONAL STORAGE - ECONOMIC MARGIN." In Advances In Solar Energy Technology, 1956–60. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-034315-0.50372-4.
Full text
10
"TECHNICAL AND ECONOMIC ASPECTS OF CHP AT PFIZER." In Combined Production of Heat and Power, 159–70. Routledge, 2003. http://dx.doi.org/10.4324/9780203215852-20.
Full textConference papers on the topic "Heat storage – Economic aspects"
1
Okamoto, Satoru. "Economical and Environmental Aspects of Heat Pump System Utilizing Unused Energy in Aquarium." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52101.
Full textAbstract:
This paper introduces a heat pump system with a latent heat storage utilizing seawater installed in an aquarium. Heat from the seawater is collected and used as the heat source for the heat pump system. This maintains the indoor conditions at constant temperature and relative humidity. With regard to the heat pump system using low-temperature unutilized heat source, development is introduced on a heat source load responsive heat pump system, with combines a load variation responsive heat pump utilizing seawater with a latent heat (ice plus water slurry) storage system using nighttime electric power serving for electric power load leveling. The desired outcome would be to show that the costs of generating heat energy with the seawater-source heat pump are significantly less than those with the air-source heat pump and the oil-fired system. Additionally, the CO2 emissions for the seawater-source heat pump compare favourably as they maybe less than those for the other conventional assumed systems described.
2
Khan, Fahad, and Brian J. Savilonis. "Spherical Tanks for Use in Thermal Energy Storage Systems." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18308.
Full textAbstract:
Thermal energy storage (TES) is a vital component of concentrated solar power (CSP). TES makes up for intermittent solar radiation, bad weather, and peak power demand. Currently, a sensible heat storage system using two tanks containing molten salt is considered the most practical and economical TES. Yet further system development is needed in order to improve its performance and economics. In this study of molten salt storage tanks, spherical tanks were investigated as an alternative to cylindrical tanks. Structural and thermal aspects of cylindrical tanks with varying H/D ratios (0.25–5) and spherical tanks of the same volume were compared. Comparison showed that utilization of spherical instead of cylindrical tanks resulted in significant savings in shell building material (28–47%). Heat transfer from the spherical tank’s shell is at least 35% less than cylindrical tanks. Reduction in building material, foundation, and insulation cost can lead to significant cost savings.
3
Zhao, Weihuan, Ying Zheng, Joseph C. Sabol, Alparslan Oztekin, Sudhakar Neti, Kemal Tuzla, Wojciech M. Misiolek, and John C. Chen. "Thermal Energy Storage Using Zinc as Encapsulated Phase Change Material." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63988.
Full textAbstract:
Concentrating solar power is inherently intermittent and thus thermal energy storage is an essential component of a successful baseload solar power plant. Phase change materials (PCM) have the potential to decrease the cost of thermal energy storage systems for these plants since the latent heat contribution can be significant. The present work deals with certain aspects of using zinc as PCM for storing solar energy at high temperatures from 300°C to 500°C. The objective is the storage of hundreds of mega-watt-hours equivalent of solar energy in systems using zinc as encapsulated phase change materials (EPCM). Stainless steel and nickel have been considered as encapsulation materials for zinc. The present work describes several aspects of this technology that need consideration in designing the EPCM; such as thermal analysis, materials issues, proof of storage and retrieval of energy and cost analysis. EPCM of several sizes and shapes subjected to many cycles of energy storage/retrieval have been considered as part of the calorimetry tests here. Thanks to the large thermal conductivities of the metals involved, storing and retrieving energy into/out of the PCM is not an impediment. Potential interaction of PCM with encapsulation materials and their impact on storage capabilities are also discussed. Lastly the cost estimates ($/kWhth) of these large thermal storage systems based on procedures used by NREL are presented. Though zinc based EPCM storage systems can be expensive at around $54/kWhth, they are more economical than the current two-tank storage systems that use sensible heat only for thermal energy storage.
4
Rosetta, M. J., and D. H. Martens. "Vaporization of LNG Using Fired Heaters With Waste Heat Recovery." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61648.
Full textAbstract:
Liquefied Natural Gas (LNG) is an important component in meeting the future energy needs of the United States and other industrialized countries. The ability to locate (produce), process, liquefy, transport, and re-gasify stranded natural gas is vital to maintaining a stable long-term natural gas supply necessary for sustained economic growth [1]. Two of the key components in this supply chain are the vaporization of the LNG at the import terminal and the peak shaver trains that liquefy pipe line natural gas, store it and then vaporize the liquid to feed the gas to the pipe line when additional flow is required. This paper outlines a novel approach incorporating a traditional fired heater with waste heat recovery to vaporize LNG at an import terminal or peak shaver train while maintaining a high thermal efficiency. A comparison is made between the new technology and more conventional methods, with emphasis on emissions. Some of the advantages and disadvantages associated with the design and implementation of these systems are explored in this presentation. As a fundamental cannon of ethics, engineers are obligated to address the most efficient and responsible use of resources. The environmental impact of supplying the necessary natural gas energy to industry and consumers is significant. This paper addresses these aspects as considered during the development of the alternative LNG vaporization technology.
5
Luciano De La Cruz, Lucero Cynthia, and Cesar Celis. "Design and Integration of a Renewable Energy Based Polygeneration System With Desalination for an Industrial Plant." In ASME 2019 Power Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/power2019-1932.
Full textAbstract:
Abstract Polygeneration improves energy efficiency and reduces both energy consumption and pollutant emissions compared to conventional generation technologies. A polygeneration system is a variation of a cogeneration system, in which more than two outputs, i.e., heat, power, cooling, water, energy or fuels, are accounted for. In particular, polygeneration systems integrating solar energy and water desalination represent promising technologies for energy production and water supply. They are therefore interesting options for coastal regions with a high solar potential, such as those located in southern Peru and northern Chile. Notice that most of the Peruvian and Chilean mining industry operations intensive in electricity and water consumption are located in these particular regions. Accordingly, this work focus on the design and integration of a polygeneration system producing industrial heating, cooling, electrical power and water for an industrial plant. In particular, the design procedure followed in this work involves integer linear programming modeling (MILP). The technical and economic feasibility of integrating renewable energy technologies, thermal energy storage, power and thermal exchange, absorption chillers, cogeneration heat engines and desalination technologies is particularly assessed. The polygeneration system integration carried out seeks to minimize the system total annual cost subject to CO2 emissions restrictions. Particular economic aspects accounted for include investment, maintenance and operating costs.
6
Ciconkov, Risto. "Climate Change and HVACR Systems." In 50th International HVAC&R Congress and Exhibition. SMEITS, 2020. http://dx.doi.org/10.24094/kghk.019.50.1.245.
Full textAbstract:
Indicators at a global level are presented: population in the world today and forecasts for developed and developing countries. The following diagrams are presented: world total primary energy consumption, global CO2 emissions from combustion since 1971, as well as cumulative CO2 emissions by regions since 1750. Facts for climate change are included (according to WMO and IPCC): increase in GHG concentrations, increase in air temperature, rise in sea level, etc. The consequences of global warming are listed: extreme rainfall and floods; high temperatures – heat waves, droughts, wildfires; huge damage to agriculture; harmful impacts on the environment, etc. The IPCC provides several scenarios for a global rise of air temperature up to 2100, for a global rise of sea level etc. The activities of the international community on climate change are organized through: IPCC, UNFCCC, Kyoto Protocol, Paris Agreement and continuous negotiations. The European Union (EU) is probably the most advanced in the battle against climate change. Some important strategies are outlined: by 2020, by 2030, and by 2050. Heating, air-conditioning and refrigeration systems (HVACR) are connected with energy consumption, which means they are a source of GHG emissions. The situation with HVACR systems is such that even in EU countries, the fossil fuels are dominant in the heating systems. Future solutions for HVACR systems are described. The first step is to increase the energy efficiency of buildings and HVACR equipment. The concept of "nearly zero-energy buildings" should be worked on. HVACR systems should be based on renewable energy sources (RES). The considered solutions include heat pumps, solar panels, thermal storage, district heating, combined heat and power, condensing boilers, reversible air conditioners, the concept of "smart" buildings, automation of HVACR systems with digital technology, etc. The political, economic and social aspects of climate change are analyzed. Capitalism society, market economy, profit, is the main reason for today's climate change situation. On the end, there is a discussion highlighting the need for urgent and major investment in RES and energy efficiency. For rich countries, this is really achievable. But developing countries, representing 83% of the world's population, need financial assistance, and this needs to be regulated through the Paris Agreement. Obstacles of a political nature are also possible (US and Paris Agreement).
7
Qu, Ming, David H. Archer, Hongxi Yin, and Sophie Masson. "Solar Absorption Cooling and Heating System in the Intelligent Workplace." In ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36047.
Full textAbstract:
A solar thermal driven absorption cooling and heating system has been installed in Carnegie Mellon University’s Robert L. Preger intelligent Workplace, the IW. The purpose of this solar installation is to investigate the technical and economic aspects of using high temperature solar thermal receivers driving a two stage absorption chiller to cool and heat a building space. The solar system consists primarily of 52 m2 of single-axis tracking parabolic trough solar collectors (PTSC), and a 16 kW double effect absorption chiller driven by either a fluid heated in solar receivers or by natural gas fuel. The receivers convert solar radiation to thermal energy in a heated fluid; the chiller then uses this energy in summer to generate chilled water. In winter, the thermal energy is directly used for heating. A performance analysis was carried out to estimate the conversion efficiency of the PTSC based on mass and energy balances and heat transfer computations programmed in Engineering Equation Solver (EES). The performance of the overall solar cooling and heating for the IW has been programmed in TRNSYS modeling system. This solar energy system has been estimated to provide 38–50% of the cooling and 9–30% of heating energy depending upon orientation, insulation and storage capacity for 245 m2 of space in the IW. Experimental data are now being collected and will be used for validating the solar collector model. The solar system model will be used in interpreting the data yet to be obtained on the system performance. The primary purpose of this research program is the development of systems which reduce the energy requirements for the operation of buildings by a factor of two or greater, and the provision of techniques and tools for the design and evaluation of such systems.
8
Martinkauppi, J. B., T. Syrjala, A. Makiranta, and E. Hiltunen. "Some Aspects of Recycling Concrete Crush for Thermal Heat Storage." In 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, 2018. http://dx.doi.org/10.1109/icrera.2018.8566981.
Full text
9
Zhang, Detian, Weichun Ge, Qianwei Liu, Shunjiang Wang, Anlong Su, Yang Song, Kai Gao, Yanfeng Ge, and Yang Gao. "Economic Research Based on optimization Model of Abandoned Wind Storage Heat Supply." In 2018 Ninth International Conference on Intelligent Control and Information Processing (ICICIP). IEEE, 2018. http://dx.doi.org/10.1109/icicip.2018.8606717.
Full text
10
Paska, Jozef, Piotr Biczel, and Mariusz Klos. "Technical and economic aspects of electricity storage systems co-operating with renewable energy sources." In 2009 10th International Conference on Electrical Power Quality and Utilisation - (EPQU). IEEE, 2009. http://dx.doi.org/10.1109/epqu.2009.5318843.
Full textReports on the topic "Heat storage – Economic aspects"
1
Leoni, Paolo. Techno-economic comparison of the collected examples. IEA SHC Task 55, November 2020. http://dx.doi.org/10.18777/ieashc-task55-2020-0012.
Full textAbstract:
Subtask A “Network analysis and integration” focuses on the overall aspects of district heating and cooling networks with integrated solar thermal (ST) technologies. Particularly important are the cases in which the solar share is such to significantly influence the operation of the network and the other heat/cold supply units. In the present factsheet, the best-practice examples collected in the factsheet A-D1.1 are analyzed and compared.