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Articles de revues sur le sujet « Heat exchangers »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 25 juillet 2025

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1

Balaji, Viswanadhapalli, Sridhar Padala, Sanjeev Kumar Josh, et al. "Finite element analysis of double pipe heat exchanger using nanofluids." E3S Web of Conferences 563 (2024): 01004. http://dx.doi.org/10.1051/e3sconf/202456301004.

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Heat exchangers are now a necessary part of practically all contemporary industries. Heat exchangers have become especially important in an era of scarce resources and fierce market rivalry. In order to study a counterflow heat exchanger's thermal performance, this work modifies the compositions of the coolant and nanofluid that contain iron particles. To evaluate the efficacy of heat exchangers, analysis findings including heat transfer rates, total heat transfer coefficients, and heat exchanger effectiveness have been computed. This project's goal is to ascertain whether using nanofluids enh

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Daheriya, Sharad Kumar. "Comparative Experimental Study and Performance Intensification of Heat Exchanger by 55° Corrugated Tube and Twisted Tape Inserts of Pitch Length 1.5." International Journal for Research in Applied Science and Engineering Technology 13, no. 4 (2025): 1182–93. https://doi.org/10.22214/ijraset.2025.68399.

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The principal objective of this comparative experimental analysis is to determine the straight 55° corrugated steel tube heat exchanger is more beneficial to utilize than a standard straight steel tube heat exchanger. Straight tubes make heat exchanger tube fabrication easier. As a result, helical tubes and numerous other smaller tube forms of heat exchangers are inferior to straight tube heat exchangers. Most research on heat transfer coefficients is done for constant heat flow or constant wall temperature, while more recent work considers fluid-to-fluid heat exchange. In parallel flow and co

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Walsh, Christian, Rana Ronak, Rathod Hiren, Patel Dhiraj, and Patel Atul. "A Case Study on Basic of Heat Exchanger." Research and Applications of Thermal Engineering 6, no. 3 (2023): 31–36. https://doi.org/10.5281/zenodo.10319184.

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<i>Equipment that exchanges or transfers heat energy for various uses is called a heat exchanger. Heat exchangers are essential in the industrial sector because they recover heat between two process fluids. The most popular heat transfer devices are plate heat exchangers, shell and tube heat exchangers, and concentric tube (double pipe).The study of fluid flow and heat conduction by computer numerical calculation and graphical display is known as computational fluid dynamics, or CFD. The fu

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4

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

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Fakheri, Ahmad. "Heat Exchanger Efficiency." Journal of Heat Transfer 129, no. 9 (2006): 1268–76. http://dx.doi.org/10.1115/1.2739620.

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This paper provides the solution to the problem of defining thermal efficiency for heat exchangers based on the second law of thermodynamics. It is shown that corresponding to each actual heat exchanger, there is an ideal heat exchanger that is a balanced counter-flow heat exchanger. The ideal heat exchanger has the same UA, the same arithmetic mean temperature difference, and the same cold to hot fluid inlet temperature ratio. The ideal heat exchanger’s heat capacity rates are equal to the minimum heat capacity rate of the actual heat exchanger. The ideal heat exchanger transfers the maximum

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Pandya, Bhavik J., and C. Karia Megha. "Latest Trends in Novel Applications of Various Heat Exchangers for Enhancement of Heat Transfer." Journal of Modern Thermodynamics in Mechanical System 1, no. 1 (2019): 16–26. https://doi.org/10.5281/zenodo.3337408.

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A heat exchanger is equipment used for transfer of heat from one medium to other medium. Heat exchangers are fundamental parts in many process industries (such as power plants or the chemical and the food industries), and as heat recovery units in the operation of many systems (such as domestic hot water production, space heating or car engines).In a compact structure of cryogenic and other industrial applications for enhancement of heat transfer, coil heat exchangers are generally used. Currently, increase in efficiency of heat exchanger and heat transfer rate of heat exchanger, lots of resea

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Anantha, Sobhanadri, Senthilkumar Gnanamani, Vivekanandan Mahendran, et al. "A CFD investigation and heat transfer augmentation of double pipe heat exchanger by employing helical baffles on shell and tube side." Thermal Science 26, no. 2 Part A (2022): 991–98. http://dx.doi.org/10.2298/tsci201120300a.

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The inclusion of baffles in a double pipe heat exchanger is becoming increasingly important as it improves the heat exchanger's performance. The CFD analysis is used in this paper to investigate the performance of double pipe heat exchangers with and without helical baffles on both shell tube sides. The 3-D CFD model was created in Solid Works, and the FloEFD software was used to analyze the conjugate heat transfer between the heat exchanger's tube and shell sides. Heat transfer characteristic like outlet temperature of shell and tube are investigated along with pressure drop on shell and tube

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Nitheesh, Krishnan M. C* B. Suresh Kumar. "REVIEW ON SHELL AND TUBE HEAT EXCHANGER USING NANOFLUIDS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 236–39. https://doi.org/10.5281/zenodo.573648.

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Different types of heat exchangers are extensively used in various industries to transfer the heat between cold and hot fluids. The key role of the heat exchanger is to transfer heat at maximum rate .Shell and Tube heat exchangers are having special importance in boilers, oil coolers, condensers, pre-heaters. Shell and Tube heat exchanger is one such heat exchanger, provides more area for heat transfer between two fluids in comparison with other type of heat exchanger. To intensify heat transfer with minimum pumping power innovative heat transfer fluids called Nano fluids have become the major

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Dzianik, František, Štefan Gužela, and Eva Puškášová. "Suitability Assessment of Two Types of Heat Exchangers for High Temperature, Naturally Circulating Helium Cooling Loop." Strojnícky casopis – Journal of Mechanical Engineering 69, no. 1 (2019): 39–50. http://dx.doi.org/10.2478/scjme-2019-0003.

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AbstractThe paper presents a comparison of the process properties of two types of the heat exchangers designed for the heat removal from a high temperature helium cooling loop with steady natural circulation of helium. The first considered heat exchanger is a shell and tube heat exchanger with U-tubes and the other one is a helical coil heat exchanger. Using the thermal and hydrodynamic process calculations, the thermal performance of the two alternative heat exchangers are determined, as well as the pressure drops of flowing fluids in their workspaces. The calculations have been done for seve

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10

Dou, Jie, and Fude Wang. "Simulation study on optimization design of small gas water heat exchangers." Journal of Physics: Conference Series 2835, no. 1 (2024): 012070. http://dx.doi.org/10.1088/1742-6596/2835/1/012070.

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Abstract Gas water heat exchangers are widely used and indispensable in solar heating and hot water engineering. The high-efficiency and energy-saving of heat exchangers is a development trend. This article studies small gas-water heat exchangers and designs and improves the structure of the heat exchanger. We simulate the airflow situation of the heat exchanger and further optimize the small gas-water heat exchanger based on simulation data to improve its operating conditions, thereby improving heat transfer efficiency, reducing wear, and increasing service life.

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Zhang, Yize. "Review of Corrugated Plate Design for Plate Heat Exchangers." Applied and Computational Engineering 162, no. 1 (2025): None. https://doi.org/10.54254/2755-2721/2025.gl24420.

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Heat exchange systems are key technologies that are widely adopted in industrial production and play an important role in many fields such as petrochemicals, aerospace, and integrated circuits. The plate heat exchanger, a crucial component in the heat transfer process, holds significant importance for design optimization to attain optimal heat transfer efficiency, given its popularity in the industrial sector. The heat exchanger plate is the most important part of the plate heat exchanger; different corrugated shapes of the heat exchanger plate have different effects on the heat transfer effec

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Jayesh, V. Bute, and Dr.S.H.Mankar. "Effect of varying inlet water temperature on performance of three pass helical coil heat exchanger." Journal of Thermal Energy Systems 4, no. 2 (2019): 1–6. https://doi.org/10.5281/zenodo.3233485.

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The straight tube heat exchanger is used mostly in industries such as evaporator or condenser for chemical industry and cooling fluid system. The straight tube heat exchanger consumes more space but offers lesser surface area of contact. This type of heat exchanger provides only one type of flow in single pass. Now there is need of such type of heat exchanger which increases the effectiveness with saving in cost. To improve the efficiency of heat exchanger one must think of heat transfer enhancement in heat exchanger which can help to minimize the problems associated with conventional heat exc

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Dahl, S. D., and J. H. Davidson. "Performance and Modeling of Thermosyphon Heat Exchangers for Solar Water Heaters." Journal of Solar Energy Engineering 119, no. 3 (1997): 193–200. http://dx.doi.org/10.1115/1.2888018.

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Determining the performance of indirect solar heating systems that use thermosyphon heat exchangers requires knowledge of how thermosyphon flow rate and heat exchanger performance vary with operating conditions. In this paper, measured performance of a two-pass, tube-in-shell, double-wall heat exchanger is discussed in terms of modeling issues. Thermosyphon heat exchangers may operate in the developing, mixed convection regime where natural convection effects can significantly influence overall heat transfer and friction coefficients. Existing models which assume the thermal and hydraulic beha

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14

Wang, Geng, Nai Rong, Xuefei Li, et al. "Coaxial Pipes Used as Ground Buried Heat Exchangers—A Review of Research in Recent Years." Buildings 15, no. 2 (2025): 243. https://doi.org/10.3390/buildings15020243.

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The efficient utilization of geothermal energy depends heavily on high-performance ground heat exchangers. Coaxial pipe is a high-efficiency heat exchanger composed of two nested tubes of different diameters. In this paper, the structure and thermal exchange characteristics of coaxial pipe geothermal exchangers are introduced, which are superior to single-U and double-U geothermal exchangers in respect of installation, heat transporting, and deep geothermal application. Thermal test research of coaxial pipe geothermal exchangers is investigated. Relevant studies in recent years on the factors

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Rydalina, Natalia, Oleg Stepanov, and Elena Antonova. "The use of porous metals in the design of heat exchangers to increase the intensity of heat exchange." E3S Web of Conferences 178 (2020): 01026. http://dx.doi.org/10.1051/e3sconf/202017801026.

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Heat exchangers are widely used in heat supply systems. To increase the efficiency of heat supply systems, heat exchangers with porous metals are proposed to design. There was a test facility set up to study new types of heat exchangers. The countercurrent flow of heat carriers was activated in those heat exchangers. Freon moved through the heat exchanger pores, and water moved through the inner tubes. It should be noted that the porous materials in the heat exchangers differed in the coefficient of porosity. To be compared, one of the heat exchangers did not contain any porous material. The f

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Sokolnikas, Ignas, Kęstutis Čiuprinskas, and Jolanta Čiuprinskienė. "Minimization of the Lifecycle Cost of a Rotary Heat Exchanger Used in Building Ventilation Systems in Cold Climates." Strojniški vestnik – Journal of Mechanical Engineering 67, no. 6 (2021): 302–10. http://dx.doi.org/10.5545/sv-jme.2021.7168.

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This article presents an analysis of rotary heat exchangers (RHE) used as heat recovery units in building ventilation systems in cold climates. Usually, heat exchangers with the highest heat transfer efficiency are the preferable option for this purpose. However, such exchangers usually have the highest media pressure drop, thus requiring the highest amount of energy for media transportation. In this study, the problem is solved by analysing the lifecycle cost (LCC) of the RHE including both the recovered heat and the electricity consumed in the fans of the air handling unit (AHU). The purpose

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Mikielewicz, Dariusz, and Jan Wajs. "Possibilities of Heat Transfer Augmentation in Heat Exchangers with Minichannels for Marine Applications." Polish Maritime Research 24, s1 (2017): 133–40. http://dx.doi.org/10.1515/pomr-2017-0031.

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Abstract In the paper, new trends in the development of microchannel heat exchangers are presented. The exchangers developed in this way can be applied in marine industry. Main attention is focused on heat exchanger design with reduced size of passages, namely based on microchannels. In authors′ opinion, future development of high power heat exchangers will be based on networks of micro heat exchangers.

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Abdel-Kawi, Osama, H. F. Elbakhshawangy, and Abdelfatah Abdelmaksoud. "Numerical and Experimental Performance Analysis for Different Types of Heat Exchangers." Journal of Mechanical, Civil and Industrial Engineering 3, no. 1 (2022): 13–27. http://dx.doi.org/10.32996/jmcie.2022.3.1.3.

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Heat exchangers are devices whose primary responsibility is to transfer heat, typically from one fluid to another. In such applications, the heat exchangers can be parallel flow, crossflow, or counter flow. An essential part of any heat exchanger analysis is the determination of the effectiveness of the heat exchanger. In the present work, three different types of heat exchangers are investigated. Numerical and experimental performance analyses are applied. The main objective of the present work is to compare the effectiveness of each heat exchanger at different conditions. Six experimental in

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Kumar, Sunil, and Ravindra Mohan. "A Review on The CFD Analysis of Nano Water Fluid On Helically Coiled Double Tube Heat Exchanger." SMART MOVES JOURNAL IJOSCIENCE 5, no. 10 (2019): 3. http://dx.doi.org/10.24113/ijoscience.v5i10.232.

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Heat exchanger is an important device which is used in thermal systems in many industrial fields. Nano fluids are recently employed as coolants to improve the efficacy of heat exchangers. Regarding unique characteristics of Nano fluids, research studies in this area have witnessed a remarkable growth. Latest investigations conducted on use of Nano fluids in heat exchangers including those carried out on plate heat exchangers, double pipe heat exchangers, shell and tube heat exchangers, and compact heat exchangers are reviews and summarized. Meanwhile, some very interesting aspects of Nano flui

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Singh, Nitesh Kumar, and N. V. Saxena. "Study on Thermal Behavior of Flat Plate Heat Exchanger." SMART MOVES JOURNAL IJOSCIENCE 6, no. 7 (2020): 3235. http://dx.doi.org/10.24113/ijoscience.v6i7.315.

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The plate Fin-and-tube heat exchangers are one of the most common types of heat exchangers used in various industrial applications such as heating, cooling, air conditioning, power plants, chemical plants, petrochemical plants, oil refineries, natural gas processing, industry aerospace, and wastewater treatment. It is very important to reduce the size and weight and improve the heat transfer rate of the heat exchanger. Finned and tubular heat exchangers with different geometries and orientations are used to improve thermal performance. This paper presents the Plate fin heat exchanger and types

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Rafalskaya, Tatyana A., and Valery Ya Rudyak. "Influence of coolant flow rates on the heat exchanger parameter at variable operation modes." Vestnik MGSU, no. 5 (May 2019): 621–33. http://dx.doi.org/10.22227/1997-0935.2019.5.621-633.

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Introduction. Being used in various industries, heat exchangers most often work under conditions of variable coolant flows and temperatures. At the same time, the existing theories of calculating the heat exchanger operation modes are based on the use of constant unitless parameters at any operation mode. Taking into account the effect of coolant rates on the heat transfer coefficient of the heat exchangers, the given relations are bound to specific types of heat exchangers and can only be used at constant coolant temperatures. The purpose of this study is to obtain expressions for determining

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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 c

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Abdul Razzaq, Ali k., and Khudheyer S. Mushatet. "A Review Study for a Twisted Tube Heat Exchanger." Journal of Nanofluids 12, no. 2 (2023): 299–317. http://dx.doi.org/10.1166/jon.2023.1926.

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They are considering the increasing demand and urgent need in different industries and the importance of heat exchangers imposed the development of heat exchangers to increase heat transfer and increase general performance, reducing volume and cost. The essential heat exchanger used in many industries is the double tube heat exchanger. This type has been distinguished by its simplicity and wide use in recent years. Several improvement methods have been applied, including passive, active, and compound techniques. Passive technologies change the geometry of heat exchangers and are one of the mos

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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 he

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Ge, Yu Lin, Ping Wang, Sheng Qiang Shen, and Jun Liang Xu. "Synthesis Method of Heat Exchanger Network for Distillation Device." Advanced Materials Research 199-200 (February 2011): 1509–12. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.1509.

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Mathematical programming model for synthesis of heat exchanger network for distillation unit is established. MINLP problem for heat exchanger network is solved by branch-bound method. Two kinds of heat exchanger network with splitting stream and without splitting stream are obtained. 142 heat exchangers, 8 coolers and 4 heaters are needed in the heat exchanger network without splitting stream. 34 heat exchangers, 8 coolers, 4 heaters, 11 splitters and 11 mixers are needed in the heat exchanger network with splitting stream. The matching situation including heat load, heat exchange area, duty o

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Luo, Xinmei, and Shengming Liao. "Numerical Study on Melting Heat Transfer in Dendritic Heat Exchangers." Energies 11, no. 10 (2018): 2504. http://dx.doi.org/10.3390/en11102504.

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The dendritic fin was introduced to improve the solid-liquid phase change in heat exchangers. A theoretical model of melting phase change in dendritic heat exchangers was developed and numerically simulated. The solid-liquid phase interface, liquid phase rate and dynamic temperature change in dendritic heat exchanger during melting process are investigated and compared with radial-fin heat exchanger. The results indicate that the dendritic fin is able to enhance the solid-liquid phase change in heat exchanger for latent thermal storage. The presence of dendritic fin leads to the formation of m

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Zhang, Zhou Wei, Ya Hong Wang, and Jia Xing Xue. "Research and Develop on Series of Cryogenic Liquid Nitrogen Coil-Wound Heat Exchanger." Advanced Materials Research 1070-1072 (December 2014): 1817–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1817.

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The research and development situation of liquid nitrogen coil-wound heat exchanger were discussed in view of heat exchange in gas purification field in petrol-chemical industry. The basic designing methods and the multi-stream heat exchange process were illustrated by the cryogenic and high pressure crossing heat exchange equipments of liquid nitrogen coil-wound heat exchanger with multi-stream and multiphase flow, including Three-stream back-cooling heat exchangerin first stage, Four-stream back-cooling heat exchangerin second stage, Five-stream back-cooling heat exchangerin third stage, Mul

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Manoj, Kumar, and Kumar Sinha Abhimanyu. "HEAT EXCHANGER DESIGN: ABC ALGORITHM." International Journal For Technological Research In Engineering 9, no. 11 (2022): 23–25. https://doi.org/10.5281/zenodo.6889553.

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The most prevalent heat exchange equipment is shell-and-tube heat exchangers. Shell and tube heat exchangers, despite technological developments in other exchanger types, hold a major place in industrial applications due to their wide range of operating conditions, resilience, versatility, and reliability. Because heat exchangers are widely used in industrial processes, lowering their costs is a priority for both designers and users. A generalized approach for shell and tube heat exchanger design has been developed and presented in this paper to predict surface area, overall heat transfer coef

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Ding, Yi, Qiang Guo, Wenyuan Guo, Wenxiao Chu, and Qiuwang Wang. "Review of Recent Applications of Heat Pipe Heat Exchanger Use for Waste Heat Recovery." Energies 17, no. 11 (2024): 2504. http://dx.doi.org/10.3390/en17112504.

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With the reduction in fossil fuels and growing concerns about global warming, energy has become one of the most important issues facing humanity. It is crucial to improve energy utilization efficiency and promote a low-carbon transition. In comparison with traditional heat exchangers, heat pipe heat exchangers indicate high compactness, a flexible arrangement, complete separation of hot and cold fluids, good isothermal operations, etc. As a result, heat pipe heat exchangers have attracted wide attention and application in various fields in recent years. This paper provides an overview of the a

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Nugraha, Agung Slamet, and Asep Bayu Dani Nandiyanto. "Design of Shell and Tube Heat Exchanger for Magnetite (Fe3o4) Particle Production Process." Indonesian Journal of Multidiciplinary Research 3, no. 1 (2022): 1–10. https://doi.org/10.17509/ijomr.v3i1.43333.

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Shell and tube heat exchangers are one of the most widely used types of heat exchangers in industry. The low cost of manufacture and use is one of the reasons this heat exchanger is widely used. The purpose of this research is to design a shell and tube heat exchanger (two-pass) type for application in the production of magnetite particles on an industrial scale. To design a heat exchanger, the method used is mathematical calculations using more than 20 equations that are used which are derived based on the influence of dimensional and fluid specifications. In the production of magnetite parti

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Wang, Bohong, Jiří Jaromír Klemeš, Petar Sabev Varbanov, and Min Zeng. "An Extended Grid Diagram for Heat Exchanger Network Retrofit Considering Heat Exchanger Types." Energies 13, no. 10 (2020): 2656. http://dx.doi.org/10.3390/en13102656.

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Heat exchanger network (HEN) retrofit is a vital task in the process design to improve energy savings. Various types of heat exchangers such as shell and tube, double-pipe, compact plate, and spiral tube have their working temperature ranges and costs. Selecting suitable types of heat exchangers according to their temperature ranges and costs is a crucial aspect of industrial implementation. However, considering the type of heat exchangers in the HEN retrofit process is rarely seen in previous publications. This issue can be solved by the proposed Shifted Retrofit Thermodynamic Grid Diagram wi

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Saboya, F. E. M., and C. E. S. M. da Costa. "Minimum Irreversibility Criteria for Heat Exchanger Configurations." Journal of Energy Resources Technology 121, no. 4 (1999): 241–46. http://dx.doi.org/10.1115/1.2795989.

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From the second law of thermodynamics, the concepts of irreversibility, entropy generation, and availability are applied to counterflow, parallel-flow, and cross-flow heat exchangers. In the case of the Cross-flow configuration, there are four types of heat exchangers: I) both fluids unmixed, 2) both fluids mixed, 3) fluid of maximum heat capacity rate mixed and the other unmixed, 4) fluid of minimum heat capacity rate mixed and the other unmixed. In the analysis, the heat exchangers are assumed to have a negligible pressure drop irreversibility. The Counterflow heat exchanger is compared with

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Tresna Dwi Hidayah, Nedya, and Asep Bayu Dani Nandiyanto. "SHELL AND TUBE HEAT EXCHANGER DESIGN FOR NANO ZEOLITE PRODUCTION PROCESS." International Journal of Research and Applied Technology 1, no. 2 (2021): 306–17. http://dx.doi.org/10.34010/injuratech.v1i2.6409.

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Heat exchangers are often found in the chemical process industry, but of all types of heat exchangers, the Shell and Tube Heat Exchanger (STHE) is the most commonly used. The design of heat exchangers has also been done a lot because it can reduce production costs. Therefore, this study purpose to design a tube and shell type heat exchanger for applications in producing nano zeolite. The TEMA standard is used as a reference for data collection regarding equipment specifications and dimensions. The parameters are calculated using basic Microsoft Office applications. Shell and Tube type heat exc

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Kovarik, M. "Optimal Heat Exchangers." Journal of Heat Transfer 111, no. 2 (1989): 287–93. http://dx.doi.org/10.1115/1.3250676.

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The design of optimal heat exchangers is formulated as the solution of five simultaneous equations. The analysis of these equations yields general properties of optimal crossflow heat exchangers; in particular, an upper bound of 1/3 is given for the fractional cost of maintaining the flow through the heat exchanger. Some of these general properties also apply in the presence of a simple constraint. It is shown that some technically feasible designs cannot be optimal under realistic costs and others under any costs.

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Su, Xiyuan, Yueliang Zhang, Yu Rao, Kirttayoth Yeranee, and Xintong Wang. "Experimental and Numerical Study on Flow and Heat Transfer Characteristics of Additively Manufactured Triply Periodic Minimal Surface (TPMS) Heat Exchangers for Micro Gas Turbine." Aerospace 12, no. 5 (2025): 416. https://doi.org/10.3390/aerospace12050416.

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This paper proposes two compact, efficient, and lightweight heat exchangers based on triply periodic minimal surfaces (TPMSs). Designed in an annular configuration, the heat exchangers meet the requirements of micro gas turbines for compactness. Two prototypes of Diamond and Gyroid modular TPMS heat exchangers were fabricated using selective laser melting (SLM) with stainless steel. The flow and heat transfer experimental results indicate that, within a Reynolds number range of 200 to 800, the effectiveness of both heat exchangers remained above 0.62, and the average Nusselt numbers of the Dia

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Alfwzan, Wafa F., Ghadah A. Alomani, Laila A. Alessa, and Mahmoud M. Selim. "Nanofluid Heat Transfer and Flow Characteristics in a Convex Plate Heat Exchanger Based on Multi-Objective Optimization." Journal of Nanoelectronics and Optoelectronics 18, no. 10 (2023): 1239–53. http://dx.doi.org/10.1166/jno.2023.3505.

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Convex plate heat exchangers have drawn much interest across various industries thanks to their improved heat transfer efficiency and compact design. Research examines the characteristics of convex plate heat exchangers in this study through a combined experimental and numerical method. A mixture that contains water and copper nanoparticles is known as a copper-water nanofluid. A multi-objective optimization technique is used in this study to give an experimental and numerical evaluation of the nanofluid heat transfer and flow properties of a convex plate heat exchanger. Numerical execution is

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Fialko, N., A. Stepanova, R. Navrodska, and S. Shevchuk. "STUDY OF EXERGY LOSSES IN PLATE AND SMOOTH-TUBE AIR-HEATING EXCHANGERS OF BOILER PLANTS." Thermophysics and Thermal Power Engineering 46, no. 3 (2024): 82–90. https://doi.org/10.31472/ttpe.3.2024.9.

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The study results of exergy losses in the heat transfer processes through a flat wall and cylindrical wall in heat-recovery exchangers of recovery systems for heat of boiler plants exhaust gases are presented. We considered plate and smooth-tube air-heating heat recovery systems, which are included in the heat recovery systems of a heating boiler with a nominal capacity of 2 MW. The values of exergy losses were chosen as a criterion for the exergetic efficiency of heat recovery exchangers.The purpose of the work is to determine the directions for increasing the exergy efficiency of plate and s

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Parag, Mishra*, and Manoj Arya Dr. "A REVIEW OF LITERATURE ON THERMAL DESIGN OF FORCED DRAFT COUNTER TO CROSS FLOW AIR COOLED HEAT EXCHANGER." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 4 (2016): 777–85. https://doi.org/10.5281/zenodo.50408.

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Heat exchangers are equipment that transfers heat from one medium to another. An air cooled heat  exchanger, or ACHE, is simply a pressure vessel which cools a circulating fluid within finned tubes by forcing ambient air over the exterior of the tubes. In cross flow exchangers, the hot and cold fluids move perpendicular to each other. Some actual heat exchangers are a mixture of cross flow and counter flow (Known as Counter to Cross Flow Heat Exchangers) due to design features. The proper design, operation and maintenance of heat exchangers will make the process energy efficient and minim

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Elwerfalli, Abdelnaser, Salih Alsadaie, and Iqbal M. Mujtaba. "Estimation of Shutdown Schedule to Remove Fouling Layers of Heat Exchangers Using Risk-Based Inspection (RBI)." Processes 9, no. 12 (2021): 2177. http://dx.doi.org/10.3390/pr9122177.

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Oil and Gas plants consist of a set of heat exchangers, which are used in recovering the waste heat from product streams to preheat the oil. The heat transfer coefficient of exchangers declines considerably during the operation period due to fouling. Fouling in heat exchangers is a complex phenomenon due to the acceleration of many layers of chemical substances across tubes of heat exchangers resulting from chemical reactions and surface roughness. In this paper, the fouling process was determined as a critical failure in the heat exchanger. Failure is an accelerated fouling layer across the h

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A.P.Sivasubramaniam, K.Mayilsamy, and P.Murugesan. "Simulation Studies of Heat Transfer Enhancement in a Double Pipe Heat Exchanger Fitted with Plain Tape Insert." Research and Applications of Thermal Engineering 3, no. 2 (2020): 1–8. https://doi.org/10.5281/zenodo.4043035.

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<em>Heat exchangers are important devices that are commonly used in various industries such as processes, petroleum refining, chemicals, oil industries, power plants, and paper, etc. The demand for high efficiency heat exchangers has been driven by energy and material saving requirements as well as environmental challenges in the industry. In order to improve the heat exchanger performance, an increase in the heat transfer in heat exchangers is required.In addition, heat transfer improvement makes it possible to greatly reduce the size of the heat exchanger. For a compact heat exchanger, a hig

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Ramezanpour Jirandeh, Reza, Mehrangiz Ghazi, Amir Farhang Sotoodeh, and Mohammad Nikian. "Plate-fin heat exchanger network modeling, design and optimization – a novel and comprehensive algorithm." Journal of Engineering, Design and Technology 19, no. 5 (2021): 1017–43. http://dx.doi.org/10.1108/jedt-07-2020-0262.

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Purpose The purpose of this paper is to present a novel and applied method for optimum designing of plate-finned heat exchanger network. Considering the total annual cost as the objective function, a network of plate-finned heat exchanger is designed and optimized. Design/methodology/approach Accurate evaluation of plate-finned heat exchanger networks depends on different fin types with 10 different geometrical parameters of heat exchangers. In this study, fin numbers are considered as the main decision variables and geometrical parameters of fins are considered as the secondary decision varia

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Van den Bulck, E. "Optimal Design of Crossflow Heat Exchangers." Journal of Heat Transfer 113, no. 2 (1991): 341–47. http://dx.doi.org/10.1115/1.2910567.

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The design of plate-fin and tube-fin crossflow heat exchangers is discussed. The transfer surface area of crossflow heat exchangers is used ineffectively because of the nonuniform distribution of the heat transfer across the volume of the exchanger. The optimal distribution of the transfer surface area for maximum heat exchanger effectiveness and constant total surface area is determined. It is found that a Dirac delta distribution of the transfer surface aligned along the diagonal of the crossflow exchanger gives the best performance; equal to that of a counterflow device. Design guidelines f

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Haghshenas, Fard, Mohammad Talaie, and Somaye Nasr. "Numerical and experimental investigation of heat transfer of ZnO/Water nanofluid in the concentric tube and plate heat exchangers." Thermal Science 15, no. 1 (2011): 183–94. http://dx.doi.org/10.2298/tsci091103048h.

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The plate and concentric tube heat exchangers are tested by using the water-water and nanofluid-water streams. The ZnO/Water (0.5%v/v) nanofluid has been used as the hot stream. The heat transfer rate omitted of hot stream and overall heat transfer coefficients in both heat exchangers are measured as a function of hot and cold streams mass flow rates. The experimental results show that the heat transfer rate and heat transfer coefficients of the nanofluid in both of the heat exchangers is higher than that of the base liquid (i.e., water) and the efficiency of plate heat exchange is higher than

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Badawy, Faris Ali, and Kadhum Audaa Jehhef. "NANOFLUIDS HEAT TRANSFER INTENSIFICATION IN DOUBLE PIPE HEAT EXCHANGERS: REVIEW ARTICLE." Acta Mechanica Malaysia 5, no. 2 (2022): 16–23. http://dx.doi.org/10.26480/amm.01.2022.16.23.

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In current years, the warmth switch enhancement developed with the aid of the usage of nanofluid. A nanofluid is a kind of fluid that organized by means of dispraised of nanoparticles of metal, oxides or carbides with 100 nm size that depressed in water, ethylene glycol or oil. The enhancement of warmness transfer overall performance through expending nanofluid primarily relies upon on the type of nanoparticles, kind of base fluid, form of nanoparticles, size of nanoparticles and nanoparticles attention in the base fluid. In this paper, several newly massive numbers of studied have been being

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Goncharuk, K. O., D. S. Kornilova, D. S. Yakovlev, and N. N. Prokhorenko. "HAZARDS OF STANDARD HEAT-EXCHANGE EQUIPMENT IMPLEMENTATION IN CHEMICAL TECHNOLOGY WITHOUT CONSIDERING THE PROCESS SPECIFIC CHARACTER." Fine Chemical Technologies 11, no. 5 (2016): 57–64. http://dx.doi.org/10.32362/2410-6593-2016-11-5-57-64.

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Standard equipment is a considerable part of modern equipment of chemical plants. In particular, standard heat exchangers are widespread. Possible deviations in the operation of heat exchangers at plants from the preset parameters of their operation can lead to deterioration of the operation of the whole technological system. For this reason an attempt is made in the article to suggest a hypothesis explaining what can lead to disfunction in the operation of heat exchangers. The authors use a method of calculating technological reliability to study the operability of a vertical shell-and-tube h

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Kancs, A. "Manufacturability and Performance Study of Triply Periodic Minimal Surface Air-to-Air Heat Exchanger." Latvian Journal of Physics and Technical Sciences 62, no. 1 (2025): 65–77. https://doi.org/10.2478/lpts-2025-0006.

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Abstract The study tests 3D printability, heat transfer characteristics and pressure drop of two types of triply periodic minimal surface heat exchanger in order to develop new flow principles for compact heat exchanger design. Various generic plate heat exchanger designs are also tested to compare to the printed alternatives. Geometry variations for heat exchangers and laboratory testing air recuperators are modelled in SolidWorks software and manufactured mostly by UV LCD and FDM additive manufacturing methods. Digital light processing printing method has been found to be most successful in

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Harish, Tiwari, V. Bute Jayesh, and Patil Rupali. "Effects of Non-Dimensional Parameters on the Performance of Three Pass Helical Coil Heat Exchanger." Journal of Industrial Mechanics 4, no. 3 (2019): 1–7. https://doi.org/10.5281/zenodo.3534707.

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Heat exchanger is that device which is used to transfer thermal energy in more than two fluids, between a solid surface and a fluid, at different related temperatures. Heat exchangers are used in various applications and the deserving heat exchangers have major demand from industries. Due to the increasing trend of global industrialization, crucial efforts have been taken to increase the heat transfer, rate of heat transfer, minimize dimensions of heat exchangers, and also increase in the overall effectiveness. The secondary flow develops to the curvature of the tube. The curvature of the coil

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Ali, Hussein Hayder Mohammed, and Fatima Tahir. "Enhancing the Efficiency of the Double-Tube Heat Exchanger by Using a Twisted Inner Tube." Advances in Mechanical and Materials Engineering 40 (2023): 159–70. http://dx.doi.org/10.7862/rm.2023.16.

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This study utilized two double tube-type heat exchangers. The first exchanger employed a smooth inner tube, while the second one utilized a twisted inner tube. The shell was constructed of plastic (PVC), while the tube was made of copper with a length of 1000 mm, an outer diameter of 62.24 mm, a smooth tube inner diameter of 14.2 mm, and an equivalent diameter of 11.8 mm for the twisted tube. To minimize heat loss, the shell was insulated externally with a thermal insulator. A flow rate of 3 liters per minute of hot water was passed through a ring-shaped tunnel, with an inlet temperature of 63

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Fontaine, Kevin, Takeshi Yasunaga, and Yasuyuki Ikegami. "OTEC Maximum Net Power Output Using Carnot Cycle and Application to Simplify Heat Exchanger Selection." Entropy 21, no. 12 (2019): 1143. http://dx.doi.org/10.3390/e21121143.

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Ocean thermal energy conversion (OTEC) uses the natural thermal gradient in the sea. It has been investigated to make it competitive with conventional power plants, as it has huge potential and can produce energy steadily throughout the year. This has been done mostly by focusing on improving cycle performances or central elements of OTEC, such as heat exchangers. It is difficult to choose a suitable heat exchanger for OTEC with the separate evaluations of the heat transfer coefficient and pressure drop that are usually found in the literature. Accordingly, this paper presents a method to eval

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Amarnagendram, Dr B. "Design and Analysis of Various Baffle System in Shell Tube Heat Exchanger." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 3207–11. http://dx.doi.org/10.22214/ijraset.2021.37010.

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Heat exchangers are systems of thermal engineering in which its applications are occurred in different industries. Heat exchangers are the basic or heart of once organized plant since it transfers energy to the processing plant Shell and tube heat exchanger is the most common type heat exchanger widely use in refinery and other chemical process, because it suits high pressure application. The process in solving simulation consists of modeling and meshing the basic geometry of shell and tube heat exchanger using CFD package ANSYS 18.0. The objective of the project is design of shell and tube he

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