Academic literature on the topic 'Heat exchangers - Design'

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Journal articles on the topic "Heat exchangers - Design"

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Van den Bulck, E. "Optimal Design of Crossflow Heat Exchangers." Journal of Heat Transfer 113, no. 2 (May 1, 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 for optimal area allocation within crossflow heat exchangers are established. Compared to conventional designs, designs following these guidelines may lead to either a higher exchanger effectiveness for equal pressure drops and surface area, reduced pressure drops for equal exchanger effectiveness, or reduced weight and a near cubic form of the exchanger core for equal pressure drops and effectiveness.
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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 first test cycle proved the feasibility of using porous metals in heat exchange equipment. Afterwards, a simplified mathematical model of the heat exchanger was compiled. Such an analytical form makes a solution convenient for engineering calculations. Numerical calculations based on this model were compared with the experimental data. Heat transfer intensity of materials with different porosity was compared.
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Kovarik, M. "Optimal Heat Exchangers." Journal of Heat Transfer 111, no. 2 (May 1, 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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Wei, Hong Ling, and Xiao Shun Lu. "The Design of Rotary Heat Exchangers." Applied Mechanics and Materials 63-64 (June 2011): 98–101. http://dx.doi.org/10.4028/www.scientific.net/amm.63-64.98.

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Rotary heat exchanger heat exchanger is produced based on the original so easy to have oxide generated sediments, it has a small, high efficiency and low cost, can be widely used in textile, printing and dyeing, food processing, leather, paper and chemical industries. The feasibility of the rotary heat exchangers is analyzed from thermodynamics.
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Mikulionok, I. O. "CONSTRUCTIVE DESIGN OF HEAT EXCHANGERS "TUBE-IN-TUBE" (REVIEW)." Energy Technologies & Resource Saving, no. 4 (December 20, 2020): 63–74. http://dx.doi.org/10.33070/etars.4.2020.07.

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Advanced designs of one of the simplest and reliable heat-exchange apparatuses for processing of various liquid and gaseous environments – heat exchangers "tube-in-tube" are considered. New designs in the majority a case eliminate the main defect of classical heat exchangers "tube-in-tube" – a small surface of a heat transfer. However increase in a heat exchange surface usually significantly complicates production and/or operation (including repair) heat exchangers. Classification of the heat exchange devices "tube-in-tube" is proposed: The following signs are the basis for classification: assembly level, quantity of streams in channels, the design material nature, degree of mobility of heat exchange tubes, existence of vortex generators in channels, a form of external and/or internal tubes. The critical analysis of the most characteristic designs of the heat exchangers "tube-in-tube" developed by domestic and foreign designers and inventors is made. Bibl. 17, Fig. 21.
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Zhou, Tao, Bingchao Chen, and Huanling Liu. "Study of the Performance of a Novel Radiator with Three Inlets and One Outlet Based on Topology Optimization." Micromachines 12, no. 6 (May 21, 2021): 594. http://dx.doi.org/10.3390/mi12060594.

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In recent years, in order to obtain a radiator with strong heat exchange capacity, researchers have proposed a lot of heat exchangers to improve heat exchange capacity significantly. However, the cooling abilities of heat exchangers designed by traditional design methods is limited even if the geometric parameters are optimized at the same time. However, using topology optimization to design heat exchangers can overcome this design limitation. Furthermore, researchers have used topology optimization theory to designed one-to-one and many-to-many inlet and outlet heat exchangers because it can effectively increase the heat dissipation rate. In particular, it can further decrease the hot-spot temperature for many-to-many inlet and outlet heat exchangers. Therefore, this article proposes novel heat exchangers with three inlets and one outlet designed by topology optimization to decrease the fluid temperature at the outlet. Subsequently, the effect of the channel depth on the heat exchanger design is also studied. The results show that the type of exchanger varies with the channel depth, and there exists a critical depth value for obtaining the minimum substrate temperature difference. Then, the flow and heat transfer performance of the heat exchangers are numerically investigated. The numerical results show that the heat exchanger derived by topology optimization with the minimum temperature difference as the goal (Model-2) is the best design for flow and heat transfer performance compared to other heat sink designs, including the heat exchanger derived by topology optimization having the average temperature as the goal (Model-1) and conventional straight channels (Model-3). The temperature difference of Model-1 can be reduced by 37.5%, and that of Model-2 can be decreased by 62.5% compared to Model-3. Compared with Model-3, the thermal resistance of Model-1 can be reduced by 21.86%, while that of Model-2 can be decreased by 47.99%. At room temperature, we carried out the forced convention experimental test for Model-2 to measure its physical parameters (temperature, pressure drop) to verify the numerical results. The error of the average wall temperature between experimental results and simulation results is within 2.6 K, while that of the fluid temperature between the experimental and simulation results is within 1.4 K, and the maximum deviation of the measured Nu and simulated Nu was less than 5%. This indicated that the numerical results agreed well with the experimental results.
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Han, Yue, Heng Zhi Cai, Ya Jun Zhang, Da Ming Wu, and Xin Liang Wang. "Design and Analysis of Micro Plastic Heat Exchanger." Advanced Materials Research 562-564 (August 2012): 1776–79. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.1776.

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The heat exchanger is widely used in energy engineering, chemical engineering etc. And with development of the MEMS (Micro Electro Mechanical Systems), many researchers are interested in the micro heat exchanger. In this paper, the micro plastic heat exchangers are manufactured by modified PPS. A heat exchanger with polypropylene (PP) is also made for comparison. Simulation and experiment are carried out to determine the thermal performance of the micro plastic heat exchangers. The experimental results are compared with that of simulation. The results show the performance of the micro plastic heat exchanger is very close to that of metal heat exchanger with the same dimension.
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Reyes-León, Arturo, Miguel Toledo Velázquez, Pedro Quinto-Diez, Florencio Sánchez-Silva, Juan Abugaber-Francis, and Celerino Reséndiz-Rosas. "The Design of Heat Exchangers." Engineering 03, no. 09 (2011): 911–20. http://dx.doi.org/10.4236/eng.2011.39112.

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Yilmaz, Tuncay, and Orhan Büyükalaca. "Design of Regenerative Heat Exchangers." Heat Transfer Engineering 24, no. 4 (July 2003): 32–38. http://dx.doi.org/10.1080/01457630304034.

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Gužela, Štefan, František Dzianik, Martin Juriga, and Juraj Kabát. "Shell and Tube Heat Exchanger – the Heat Transfer Area Design Process." Strojnícky casopis – Journal of Mechanical Engineering 67, no. 2 (November 1, 2017): 13–24. http://dx.doi.org/10.1515/scjme-2017-0014.

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AbstractNowadays, the operating nuclear reactors are able to utilise only 1 % of mined out uranium. An effective exploitation of uranium, even 60 %, is possible to achieve in so-called fast reactors. These reactors commercial operation is expected after the year 2035. Several design configurations of these reactors exist. Fast reactors rank among the so-called Generation IV reactors. Helium-cooled reactor, as a gas-cooled fast reactor, is one of them. Exchangers used to a heat transfer from a reactor active zone (i.e. heat exchangers) are an important part of fast reactors. This paper deals with the design calculation of U-tube heat exchanger (precisely 1-2 shell and tube heat exchanger with U-tubes): water – helium.
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Dissertations / Theses on the topic "Heat exchangers - Design"

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Henry, M. P. "Design methodology : Regenerative heat exchangers." Thesis, University of York, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379493.

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Goodman, Christopher L. "Modeling, validation and design of integrated carbon dioxide heat pumps and water heaters." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22560.

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Abushammala, Omran. "Optimal Helical Tube Design for Intensified Heat / Mass Exchangers." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0091.

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La recherche de solutions technologiques visant à minimiser la taille d’un dispositif, qualifiée d’intensification, est un objectif classique du génie des procédés. Dans ce mémoire, les possibilités d’intensification offertes par des tubes hélicoïdaux sont étudiées, à la fois pour des échangeurs de chaleur et de matière. L’utilisation de tubes hélicoïdaux en lieu et place de tubes droits présente en effet un intérêt à la fois en termes d’augmentation de la surface d’échange par unité de volume entre les deux fluides circulant dans l’échangeur et par la possibilité d’augmentation des transferts par génération de vortex de Dean dans les tubes. Un ensemble de simulations de mécanique des fluides numérique a été réalisé et confronté à des résultats expérimentaux. Au final, sur la base d’une démarche systématique faisant appel à des corrélations, une réduction volumique d’un facteur 8 est obtenue, tant pour les échangeurs de chaleur que pour les contacteurs à membranes
The search for technological solutions aimed at minimizing the size of a device, known as intensification, is a classic objective of process engineering. In this thesis, the intensification possibilities offered by helical tubes are studied, both for heat and mass exchangers. The use of helical tubes instead of straight tubes is indeed of interest both in terms of increasing the exchange surface per unit volume between the two fluids circulating in the exchanger and by the possibility of increasing the transfers by generating Dean vortices in the tubes. A set of CFD (Computational Fluid Dynamics) type simulations was carried out and compared with experimental results. In the end, on the basis of a systematic approach using correlations, a volume reduction of a factor of 8 was obtained, both for heat exchangers and for membrane contactors
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Leung, C. W. "The optimisation of the design of extended surface heat exchangers." Thesis, University of Sunderland, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234917.

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Tapia, Carlos F. "Second law and thermoeconomic aspects of heat exchanger design /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487267546984182.

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Ozden, Ender. "Detailed Design Of Shell-and-tube Heat Exchangers Using Cfd." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608752/index.pdf.

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Traditionally Shell-and-tube heat exchangers are designed using correlation based approaches like Kern method and Bell-Delaware method. With the advances in Computational Fluid Dynamics (CFD) software, it is now possible to design small heat exchangers using CFD. In this thesis, shell-and-tube heat exchangers are modeled and numerically analyzed using a commercial finite volume package. The modeled heat exchangers are relatively small, have single shell and tube passes. The leakage effects are not taken into account in the design process. Therefore, there is no leakage from baffle orifices and no gap between baffles and the shell. This study is focused on shell side flow phenomena. First, only shell side is modeled and shell side heat transfer and flow characteristics are analyzed with a series of CFD simulations. Various turbulence models are tried for the first and second order discretization schemes using different mesh densities. CFD predictions of the shell side pressure drop and the heat transfer coefficient are obtained and compared with correlation based method results. After selecting the best modeling approach, the sensitivity of the results to the flow rate, the baffle spacing and baffle cut height are investigated. Then, a simple double pipe heat exchanger is modeled. For the double pipe heat exchanger, both the shell (annulus) side and the tube side are modeled. Last, analyses are performed for a full shell-and-tube heat exchanger model. For that last model, a small laminar educational heat exchanger setup is used. The results are compared with the available experimental results obtained from the setup. Overall, it is observed that the flow and temperature fields obtained from CFD simulations can provide valuable information about the parts of the heat exchanger design that need improvement. The correlation based approaches may indicate the existence of a weakness in design, but CFD simulations can also pin point the source and the location of the weakness.
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Brooks, Paul David Edwards. "The design of moving packed bed high temperature heat exchangers." Thesis, University of the West of England, Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321834.

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Madhavan, Srivatsan. "Review, Design and Computational Study of Some Compact Heat Exchangers." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511885027497222.

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Namasivayam, Sothy. "The application of machine intelligence to the design of heat exchangers." Thesis, University of Ulster, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359663.

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Tomski, Thomas. "The design of shell-and-tube heat exchangers using expert systems." Thesis, University of Brighton, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314803.

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Books on the topic "Heat exchangers - Design"

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Heat exchanger design. 2nd ed. New York: Wiley, 1989.

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Saunders, E. A. D. Heat exchangers: Selection, design & construction. Harlow, Essex, England: Longman Scientific & Technical, 1988.

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Branson, Spencer T. Heat exchangers: Types, design, and applications. Hauppauge, N.Y: Nova Science Publishers, 2011.

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Roetzel, Wilfried, Peter John Heggs, and David Butterworth, eds. Design and Operation of Heat Exchangers. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84450-8.

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Ngao-aram, S. Design methodology of plate heat exchangers. Manchester: UMIST, 1996.

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(Anchasa), Pramuanjaroenkij A., and Liu Hongtan, eds. Heat exchangers: Selection, rating, and thermal design. 3rd ed. Boca Raton: Taylor & Francis, 2012.

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Heat exchanger design handbook. New York: Marcel Dekker, 2000.

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Shah, R. K. Fundamentals of heat exchanger design. Hoboken, NJ: John Wiley & Sons, 2003.

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P, Sekulić Dušan, ed. Fundamentals of heat exchanger design. Hoboken, N.J: John Wiley & Sons, 2003.

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Hongtan, Liu, ed. Heat exchangers: Selection, rating, and thermal design. 2nd ed. Boca Raton: CRC Press, 2002.

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Book chapters on the topic "Heat exchangers - Design"

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Bandelier, Philippe, Jean Claude Deronzier, and Fernand Lauro. "Plastic Heat Exchangers." In Design and Operation of Heat Exchangers, 201–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84450-8_19.

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Schnabel, Lena, Gerrit Füldner, Andreas Velte, Eric Laurenz, Philip Bendix, Harry Kummer, and Ursula Wittstadt. "Innovative Adsorbent Heat Exchangers: Design and Evaluation." In Innovative Heat Exchangers, 363–94. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71641-1_12.

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Zohuri, Bahman. "Compact Heat Exchangers Design for the Process Industry." In Compact Heat Exchangers, 57–185. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29835-1_3.

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Zohuri, Bahman. "Thermal Design of the Selected Compact Heat Exchanger." In Compact Heat Exchangers, 187–265. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29835-1_4.

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Drögemüller, Peter. "hiTRAN® Thermal Systems in Tubular Heat Exchanger Design." In Innovative Heat Exchangers, 295–339. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71641-1_10.

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Kolb, Gunther. "Innovative Design of Microstructured Plate-and-Frame Heat Exchangers." In Innovative Heat Exchangers, 117–34. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71641-1_3.

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Afgan, Naim H., and Maria G. Calvalho. "Sustainability Criteria for Heat Exchanger Design." In Heat Transfer Enhancement of Heat Exchangers, 31–47. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9159-1_3.

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Roetzel, Wilfried, and Bernhard Spang. "C1 Thermal Design of Heat Exchangers." In VDI Heat Atlas, 31–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-77877-6_4.

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Taborek, Jerry. "Strategy of Heat Exchanger Design." In Two-Phase Flow Heat Exchangers, 473–93. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2790-2_14.

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Butterworth, D. "Condensers and their Design." In Two-Phase Flow Heat Exchangers, 779–828. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2790-2_26.

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Conference papers on the topic "Heat exchangers - Design"

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Cetinbas, Cankur Firat, Burak Ahmet Tuna, Cevat Akin, Selin Aradag, and Nilay Sezer Uzol. "Comparison of Gasketed Plate Heat Exchangers With Double Pipe Heat Exchangers." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24712.

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In this study, a computer program is developed to design and compare gasketed plate heat exchangers with double pipe heat exchangers. The computer program is coded in MATLAB. The user interface of the program is prepared in MATLAB Guide. The program uses hot and cold fluid properties as input data and calculates the characteristics of gasketed plate heat exchangers and double pipe heat exchangers designed for the given conditions. The outputs for gasketed plate heat exchanger design include number of plates, effective area, total heat transfer coefficient, pressure losses, pumping power and cost, whereas, the outputs for double pipe heat exchanger selection are: pump power, total number of hairpins, effective area, pressure drop, total heat transfer coefficient and cost. Correlations selected from literature are used in the program for the analysis. Water is selected as the working fluid to be able to make the comparison. The program compares the heat exchangers based on cost, effective area, and pumping power. The computer program is also used to understand and compare operational behaviors of these two heat exchangers under different operating conditions.
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Dumas, Antonio, and Michele Trancossi. "A Mathematical Based Design Methodology for Crossflow Heat Exchangers." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12359.

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This paper presents a theoretical work, in order to apply well tested experimental correlations by Gnielinski to a lumped parameters analysis of cross-flow heat exchanger. It produces an effective set of equations which could be useful and effective in order to produce an accurate design of staggered and in line heat exchangers, but also heat pipes based exchangers. The presented method can help designer of heat exchangers to design and determinate performances of cross flow heat exchangers starting by the physical properties of a pipe (or heat pipe) and using geometrical parameters of the exchanger produces an effective evaluation of performances of the whole exchanger.
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Goh, Chung-Hyun, Nelson Fumo, and Zhenjun Ming. "Integrated Computational Approach for Heat Exchangers Design." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65653.

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Heat exchangers are present in a variety of processes and industries. Increasing system efficiency is the most effective method and one of the greatest concerns in reducing energy consumption. In this paper we applied an integrated design approach to heat exchangers design, which combines the Integrated Multi-Scale Robust Design (IMRD) with the Grey Relational Analysis (GRA). As a case study, a double-pipe heat exchanger was used. The IMRD performs the horizontal integration in the Process-Structure-Property-Performance (P-S-P-P) relationship through forward modeling and inductive exploration processes, while the vertical integration in the P-S-P-P relationship is accomplished by adopting localization and homogenization concepts. For the proposed application into heat exchangers, the IMRD explores solution spaces and suggests feasible solution ranges for improving the thermal-hydraulic performance, while the GRA evaluates the relative importance of design variables in the heat exchanger. In the preliminary study, it is found that the feasible solution range is significantly reduced for maximizing the heat transfer rate, compared to the equally balanced function, while the feasible solution range is less sensitive in minimizing annular pump power. To validate the IMRD simulation results from a CFD model are used.
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Wilson, Merrill A., Charles Lewinsohn, and James Cutts. "Design Considerations for High Temperature, Ceramic Heat Exchangers." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32229.

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The recent developments in the energy industry have kindled renewed interest in producing energy (alternative fuels and electricity) more efficiently. This has motivated the development of higher temperature cycles and their associated equipment. In this paper we will discuss several design configurations coupled with the inherent properties of preferred ceramic materials to assess the viability and design reliability of ceramic heat exchangers for next generation high temperature heat exchangers. These analyses have been extended to conceptually compare the traditional shell and tube heat exchanger with shell and plate heat exchangers. These analyses include hydrodynamic, heat transfer, mechanical stress and reliability models. It was found that ceramic micro-channel heat exchanger designs proved to have the greatest reliability due to their inherent mechanical properties, minimal thermo-mechanical stresses while improving the performance efficiency in a compact footprint.
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Jun, Yong-Du, Kum-Bae Lee, Seok-Bo Ko, and Sheikh Zahidul Islam. "Design Considerations and Heat Transfer Enhancement of CFB Heat Exchangers for Flue Gas Heat Recovery." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72184.

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Now-a-day’s energy recovery process in the industry is a common practice for improving the production process while major concern goes to environment. The performance of the heat exchangers, used for the purpose of recovering energy, decreases continuously with time due to fouling depending on surface temperature, surface condition, construction material, fluid velocity, flow geometry and fluid composition. To overcome the fouling of fly ash on the heat transfer surface and erosion and periodical cleaning which are the major drawbacks in conventional heat exchangers for flue gas heat recovery, a no-distributor-circulating-fluidized-bed (NDCFB) heat exchanger with automatic particle controlling is devised. One of the main advantages of this model is the reduced pressure drop through the entire heat exchanger system, while increasing heat transfer performance. The research started with a single riser system with multiple down comers and multi-riser system is also studied. The heat transfer performance and pressure drop have been evaluated through experiments for these gas-to-water lab scale heat exchanger systems. However, due to the operational complexity, these two models are not readily applicable to real applications. As a derivation of the previous studies regarding the no-distributor CFB heat exchangers, third generation model of the heat exchanger is now under investigation.
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Yang, Chien-Yuh, Chun-Ta Yeh, Wei-Chi Liu, and Bing-Chwen Yang. "Advanced Micro Heat Exchangers for High Heat Flux." In ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2006. http://dx.doi.org/10.1115/icnmm2006-96032.

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Owing to the rapid development of semiconductor industry, the heat dissipated from electronic devices increases drastically with increasing device logic gate number and operation speed. The cooling technologies have undergone evolutionary changes from air cooled fin geometry to copper base and vapor chamber heat spreader and to more thorough methods such as forced convective liquid cooling in recent years. Three micro heat exchangers with long offset strip, short offset strip and chevron flow path based on the conventional heat transfer enhancement concepts were designed, fabricated and tested. A straight channel heat exchanger was also made for comparison. The test results show that there is no significant difference of the thermal resistance at various heating power for each heat exchanger. The chevron channel heat exchanger provides the lowest thermal resistance. However, its pressure drop is also the highest. It is approximately 250% higher than that for other three heat exchangers. The offset strip heat exchangers provide better thermal performance than the straight channel heat exchanger does. The performance of heat exchanger with shorter strip is better than that of heat exchanger with longer strip. Further improvement such as optimum strip length design or streamlined strip shape may be applied to reduce its flow pressure drop.
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Wang, Lieke, and Bengt Sunden. "Optimal Design of Plate Heat Exchangers." In International Heat Transfer Conference 12. Connecticut: Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.4420.

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Gruss, Jean-Antoine, Christophe Bouzon, and Bernard Thonon. "Extruded Microchannel-Structured Heat Exchangers." In ASME 2004 2nd International Conference on Microchannels and Minichannels. ASMEDC, 2004. http://dx.doi.org/10.1115/icmm2004-2441.

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In the search for more compact air/liquid heat exchangers, one possible way is to increase the heat transfer coefficient and surface area by a decrease of the size of the fluid channels. A practical example could be air/water cross-flow heat exchangers used in cars. These exchangers are designed so that air pressure drop is minimised at a given thermal power exchanged from water to air. In this case, minimisation of the total volume leads to a very thin structure with a large frontal area, with a lot of small and short air channels. This configuration is very inconvenient for most practical applications and also difficult to manufacture at low cost. Using this rationale, we have designed and patented a cross-flow heat transfer surface with microchannels that has such a structure, but can be manufactured industrially at reasonable cost by extrusion either in aluminium or in polymers. Moreover, the arrangement of the heat transfer surfaces is very flexible and allows for different configurations (accordion, serpentine, cylindrical, star...) so that various geometric configurations, adapted to specific applications, can be obtained. The thermo-hydraulic performance of the structure has been simulated using standard correlations and CFD codes. Prototypic structures made by stereolithography have been manufactured in glass reinforced polymer and are currently being tested on a test bench. In order to validate our simulation code, a single structure and an accordion arrangement heat exchanger are under investigation. Compared to classical heat exchangers, our design is superior in flexibility and compactness for air/liquid applications. An additional interest of our design would be to increase performance in humid air cooling applications, since our structure may drain condensates more easily. We are currently looking for a partnership to develop this design for industrial applications.
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9

De Paepe, Michel, Christophe T’Joen, Arnold Janssens, and Marijke Steeman. "Earth-Air and Earth-Water Heat Exchanger Design for Ventilation Systems in Buildings." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22459.

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Earth-air heat exchangers are often used for (pre)heating or (pre)cooling of ventilation air in low energy or passive house standard buildings. Several studies have been published in the passed about the performance of these earth-air heat exchangers [1–8]. Often this is done in relation to the building energy use. Several software codes are available with which the behaviour of the earth-air heat exchanger can be simulated. De Paepe and Janssens published a simplified design methodology for earth-air heat exchangers, based on thermal to hydraulic performance optimisation [7]. Through dynamic simulations and measurements it was shown that the methodology is quite conservative [9–10]. Hollmu¨ller added an earth-air heat exchanger model to TRNSYS [11]. In stead of using earth-air heat exchangers, earth-water heat exchangers are now getting more attention. In this system the ventilation air is indirectly cooled/heated with the water flow in a fin-tube heat exchanger in the inlet of the ventilation channel. The water-glycol mixture transfers heat with the earth by flowing through e.g. a polyethylene tube. In the second part of this paper a design methodology is first derived and then applied to this type of system.
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10

Mao, Xiaoan, Lei Shi, Artur J. Jaworski, and Wasan Kamsanam. "Heat Transfer on Parallel Plate Heat Exchangers in an Oscillatory Flow." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24760.

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In thermoacoustic devices, an acoustic wave interacts with internal solid structures such as thermoacoustic stacks (regenerators), to either produce acoustic power due to an imposed temperature gradient, or to produce a heat pumping effect by an acoustic excitation. A cold and hot heat exchangers are usually placed on either side of these internal solid structures to enable heat communication between the thermoacoustic devices and their surroundings. Heat exchangers of various geometries have been extensively studied in steady flows and results are available from a collection of published articles and handbooks. However, there is still a lack of data for heat exchangers in an oscillatory flow, because the interaction of oscillatory flow with the solid boundary is governed by complicated fluid flow and heat transfer processes that are not fully understood. This work is a step towards a better understanding of the heat transfer mechanisms in the acoustically induced oscillatory flow within thermoacoustic systems, in particular obtaining the quantitative description of the heat transfer between heat exchangers and the stack. The assembly of a stack and heat exchangers is replaced by a simplified “stack-less” pair of heat exchangers, in order to focus on the generic heat transfer processes rather than the intricacies of practical thermoacoustic systems. The fins of the hot and cold heat exchangers are kept at constant temperatures by virtue of resistive heating and water cooling, respectively. Planar Laser Induced Fluorescence (PLIF) and Particle Image Velocimetry (PIV) are used to obtain the temperature and velocity fields around the fins. The heat flux between the heat exchanger fins and the fluid is analyzed phase-by-phase. The time dependent local heat transfer coefficient is obtained from the temperature gradient in the thermal boundary layer. The measurements are conducted at various levels of acoustic excitation in order to study the correlation between the non-dimensional heat transfer coefficient Nu and the Reynolds number. The effect of the flow behaviour at the end of the plates on the temperature field in the region is also studied. It is hoped that this work could lead to a better understanding of heat transfer on short plates in the acoustically induced oscillatory flows.
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Reports on the topic "Heat exchangers - Design"

1

Lyons, Parker, and Blake Lance. Optimal Header Design for Diffusion Bonded Heat Exchangers. Office of Scientific and Technical Information (OSTI), January 2021. http://dx.doi.org/10.2172/1765270.

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2

Corradini, Michael, Mark Anderson, and Alan Kruizenga. Supercritical CO2 studies: micro-channel heat transfer for reactor heat exchangers & cycle design. Office of Scientific and Technical Information (OSTI), December 2010. http://dx.doi.org/10.2172/1004080.

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3

G. Michael Shook, Gopi Nalla, Gregory L. Mines, and K. Kit Bloomfield. Parametric Sensivity Study of Operating and Design Variables in Wellbore Heat Exchangers. Office of Scientific and Technical Information (OSTI), May 2004. http://dx.doi.org/10.2172/910645.

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4

Nalla, G., G. M. Shook, G. L. Mines, and K. K. Bloomfield. Parametric Sensitivity Study of Operating and Design Variables in Wellbore Heat Exchangers. Office of Scientific and Technical Information (OSTI), May 2004. http://dx.doi.org/10.2172/893479.

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5

Farmer, M. T., D. J. Kilsdonk, and C. Grandy. Design of a test facility to investigate fundamental Na-CO2 interations in compact heat exchangers. Office of Scientific and Technical Information (OSTI), October 2011. http://dx.doi.org/10.2172/1096699.

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6

Uvan Catton, Vijay K. Dhir, Deepanjan Mitra, Omar Alquaddoomi, and Pierangelo Adinolfi. Development of Design Criteria for Fluid Induced Structural Vibrations in Steam Generators and Heat Exchangers. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/827838.

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7

Catton, Ivan, Vijay K. Dhir, O. S. Alquaddoomi, Deepanjan Mitra, and Pierangelo Adinolfi. Development of Design Criteria for Fluid Induced Structural Vibration in Steam Generators and Heat Exchangers. Office of Scientific and Technical Information (OSTI), March 2004. http://dx.doi.org/10.2172/822365.

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8

Carlson, Matthew David, and Francisco Alvarez. Design and Implementation of a 1-3 MWth sCO2 Support Loop for Gen3 CSP Primary Heat Exchangers. Office of Scientific and Technical Information (OSTI), February 2020. http://dx.doi.org/10.2172/1602139.

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9

Schock, Alfred. Design of Isotope Heat Source for Automatic Modular Dispersal During Reentry, and Its Integration with Heat Exchangers of 6-kWe Dynamic Isotope Power System. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/1033407.

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10

Rucinski, Russ. Heat Exchanger Support Bracket Design Calculations. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/1033314.

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