Relevant bibliographies by topics / Heat exchanger effectiveness

Contents

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

Academic literature on the topic 'Heat exchanger effectiveness'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Heat exchanger effectiveness"

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Veerabhadrappa, Kavadiki, Dhanush Dayanand, Darshan Dayanand, Vinayakaraddy, K. N. Seetharamu, and Preadeep Hegde. "Analysis of Two Fluid Four-Channel Heat Exchanger Using Finite Element Method." Applied Mechanics and Materials 813-814 (November 2015): 658–62. http://dx.doi.org/10.4028/www.scientific.net/amm.813-814.658.

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The development of heat exchangers from two streams to multi-stream passage arrangement becomes a key problem for heat exchanger design. In this paper, a new design is developed for multi-stream (four-channel) heat exchanger. Multi-channel heat exchangers are extensively used in refrigeration and air conditioning, chemical industries, milk pasteurization, cryogenics industries and energy-recovery applications due to their higher heat transfer rates. The focus of this study is to determine the performance of four-channel counter flow heat exchanger. The hot and cold fluids are assumed to recirc
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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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Soave, Nicolò, and Massimiliano Barolo. "On the Effectiveness of Heat-Exchanger Bypass Control." Processes 9, no. 2 (2021): 244. http://dx.doi.org/10.3390/pr9020244.

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In heat exchangers with bypassing, a fraction of the flowrate of one fluid (typically the one whose temperature needs to be controlled tightly) bypasses the exchanger and mixes right after the exchanger outlet with the fraction flowing through the exchanger. The advantages of this configuration are long known. Among them, the most significant is that it can improve heat-transfer control because the temperature dynamics is significantly faster than in a standard heat-exchanger configuration. Additionally, it can increase the rangeability of the process wherein the heat exchanger operates. Exist
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Hajabdollahi, Hassan. "Comparison of stationary and rotary matrix heat exchangers using teaching-learning-based optimization algorithm." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 4 (2017): 493–502. http://dx.doi.org/10.1177/0954408917719769.

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In this paper, two kinds of compact heat exchanger including plate fin heat exchanger and rotary regenerator, respectively the stationary and rotary matrix heat exchanger, are compared. For this purpose, both heat exchangers are optimized by considering three simultaneous objective functions including effectiveness, heat exchanger volume, and total pressure drop using multi-objective teaching learning based optimization algorithm. Six different design parameters are considered for the both plate fin heat exchanger and rotary regenerator. Optimization is performed for the same and different hot
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K.H., Jyothiprakash, Krishnegowda Y.T., Krishna Venkataram, and K. N. Seetharamu. "Effect of ambient heat-in-leak on the performance of three-fluid cross-flow heat exchanger." International Journal of Numerical Methods for Heat & Fluid Flow 28, no. 9 (2018): 2012–35. http://dx.doi.org/10.1108/hff-05-2017-0205.

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Purpose Heat exchangers working in cryogenic temperature ranges are strongly affected by heat ingression from the ambient. This paper aims to investigate the effect of ambient heat-in-leak on the performance of a three-fluid cross-flow cryogenic heat exchanger. Design/methodology/approach The governing equations are derived for a three-fluid cross-flow cryogenic heat exchanger based on the conservation of energy principle. For given fluid inlet temperatures, the governing equations are solved using the finite element method to obtain exit temperatures of the three-fluid exchanger. The performa
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Rao, H. V. "Isentropic recuperative heat exchanger with regenerative work transfer." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 4 (2000): 609–18. http://dx.doi.org/10.1243/0954406001523948.

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A counter-flow heat exchanger is considered to be the ideal method for recuperative heat transfer between hot and cold fluid streams. In this paper the concept of an isentropic heat exchanger with regenerative work transfer is developed. The overall effect is a mutual heat transfer between the two fluid streams without any net external heat or work transfers. The effectiveness for an isentropic heat exchanger with regenerative work transfer is derived for the case of fluid streams with constant specific heats and it is shown that it is greater than unity. The ‘isentropic effectiveness’ of a he
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Krisdiyanto, Krisdiyanto, Rahmad Kuncoro Adi, Sudarisman Sudarisman, and Sinin Bin Hamdan. "An analysis of tube thickness effect on shell and tube heat exchanger." Eastern-European Journal of Enterprise Technologies 1, no. 8 (109) (2021): 25–35. http://dx.doi.org/10.15587/1729-4061.2021.225334.

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Heat exchangers are important equipment for the process of placing heat. The most widely used type of heat exchanger is shell and tube. This type is widely used because of its simple and easy design. Design of shell and tube heat exchangers is done by the side or shell variations to get the desired performance. Therefore, research is conducted to study the effect of tube thickness on heat transfer, pressure drop, and stress that occurs in the shell and tube heat exchanger so that the optimal tube thickness is obtained. In this research, the activities carried out are the design of heat exchang
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EL_Dighidy, S., and M. Rabah. "EFFECTIVENESS OF METALLIZED-GRAPHITE HEAT EXCHANGER." International Conference on Aerospace Sciences and Aviation Technology 2, ASAT CONFERENCE (1987): 1–12. http://dx.doi.org/10.21608/asat.1987.26001.

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Mai, T. H., N. Chitou, and J. Padet. "Heat exchanger effectiveness in unsteady state." European Physical Journal Applied Physics 8, no. 1 (1999): 71–75. http://dx.doi.org/10.1051/epjap:1999231.

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Sekulic´, D. P., and I. Kmec´ko. "Three-Fluid Heat Exchanger Effectiveness—Revisited." Journal of Heat Transfer 117, no. 1 (1995): 226–29. http://dx.doi.org/10.1115/1.2822309.

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Dissertations / Theses on the topic "Heat exchanger effectiveness"

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Booten, Charles (Charles William) 1978. "The effect of manufacturing tolerances and header design on heat exchanger effectiveness." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8914.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.<br>Includes bibliographical references (p. 125-129).<br>This study seeks to analyze the effect of manufacturing defects and inlet header design on the effectiveness of heat exchangers. A commercial computational fluid dynamics code, FLUENT 5.4, was used to numerically simulate individual and pairs of passages as well as sections of an inlet header and heat-exchanger core. The one- and two passage models show that the four representative manufacturing defects do not have a large impact on overall effect
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Andersson, Josefin. "Utredning av värmesystem i Boliden AB:s anläggning vid Tara-gruvan." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-79326.

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Sommaren 2009 besökte WSP en anläggning i anslutning till Taragruvan i Navan, Irland. Syftet av deras besök var att se över ventilationssystemet som var föråldrat. I och med besöket insåg besiktaren att även deras värmesystem var i behov av en uppdatering och den uppgiften resulterade till detta examensarbete.   Det övergripande syftet med arbetet är att undersöka hur ett nutida värmesystem kan byggas upp och förbättra inomhusklimatet jämfört med ett äldre system. Uppgiften i arbetet består av att ta fram ett förslag på utformningen av ett nytt system som tar hänsyn till effektbehov och dagens
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Perussi, Ronaldo. "Análise do desempenho de trocadores de calor de fluxo cruzado por simulação numérica." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-05072013-104947/.

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O modelo originalmente proposto por Navarro e Cabezas-Gómez (2005) para determinação da Efetividade térmica de trocadores de calor de fluxo cruzado, é avaliado e ampliado. Esta ampliação é extensiva para três casos particulares. No primeiro, o número de unidades de transferência (NUT) é determinado em função da efetividade térmica (E) e da razão entre as capacidades térmicas (C*). No segundo, cartas do fator de correção F para o método da média logarítmica da diferença de temperaturas (MLDT) são desenvolvidas a partir de uma associação entre os métodos E-NUT e MLDT realizada por Kays e London
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Stoddard, Ryan Manse. "Experimental Investigations on Non-Wetting Surfaces." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/103477.

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Superhydrophobic (SHS) and lubricant-infused surfaces (LIS) exhibit exceptional non-wetting characteristics that make them attractive for energy production applications including steam condensation and fouling mitigation. The dissertation work focuses on application of non-wetting surfaces to energy production using a systematic approach examining each component of surface fabrication in three functional areas. First, SHS and LIS are fabricated using robust, scalable methods and tested for durability in heated, wet conditions and under high-energy water jet impingement. Clear performance diffe
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Magazoni, Felipe Costa. "Modelagem computacional do desempenho térmico de trocadores de calor de fluxo cruzado e casco e tubos." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-24122016-071504/.

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O presente trabalho descreve e introduz uma metodologia numérica de simulação térmica de trocadores de calor de fluxo cruzado e de casco e tubo. A metodologia computacional é utilizada para simular doze configurações de arranjos de escoamento de trocadores de calor de fluxo cruzado com número de passes e tubos por passe arbitrários, assim como diversas condições de mistura de ambos os fluidos. O procedimento computacional é desenvolvido, baseado em diversos trabalhos da literatura, para calcular a efetividade de temperatura e o fator de correção da diferença média logarítmica de temperatura pa
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Carman, Bradley Gene. "Design of a high effectiveness ceramic micro-channel heat recuperator for micro-turbine application." Honors in the Major Thesis, University of Central Florida, 2002. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/262.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Engineering<br>Mechanical Engineering
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Venter, Sarel Jacobus, and D. G. Kroger. "The effectiveness of axial flow fans in a-frame plenums." Thesis, Stellenbosch : University of Stellenbosch, 1990. http://hdl.handle.net/10019.1/15625.

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Thesis (PhD (Mechanical and Mechatronic Engineering)--University of Stellenbosch, 1990.<br>260 leaves printed single pages, preliminary pages i-xxi and numbered pages Chapter 1/1.1-1.3, Chapter 2/2.1-2.17, Chapter 3/3.1.1-3.10, Chapter 4/4.1-4.18, Chapter 5/5.1-5.3, References pages R.1-R.7, Appendix A pages A.1-A.34, Appendix B pages B.1-B.34, Appendix C pages C.1-C.26, Appendix D pages D.1-D.16, Appendix E pages E.1-E.30, Appendix F pages F.1-F.39. Includes bibliography, list of tables, figures and symbols.<br>Digitized at 600 dpi grayscale to pdf format (OCR), using a Bizhub 250 Konica M
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Godoy, Sérgio Machado de. "Eficiência térmica de trocadores de calor compactos através de simulação numérica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-19012011-140852/.

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Um novo método numérico, para o cálculo da performance térmica de trocadores de calor com fluxos cruzados é apresentado. Dados referentes a efetividade - número de unidades de transferência (\'épsilon\' - NUT) para vários arranjos de escoamento, padronizados e complexos, foram obtidos usando esta metodologia. Os resultados foram validados através da comparação dos resultados com soluções analíticas conhecidas, para trocadores de calor de fluxos cruzados com um ou múltiplos passes, possuindo de uma até várias fileiras de tubos, e com soluções aproximadas utilizando séries infinitas, para trocad
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Khuyen, Nguyen Duc, and 阮德勸. "Heat Transfer Effectiveness and Exergy Recovery Effectiveness of a Spiral Heat Exchanger." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95170788946406756736.

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碩士<br>中興大學<br>機械工程學系所<br>99<br>In the present study, a numerical method was developed to investigate the heat transfer performance of a spiral heat exchanger. In the spiral heat exchanger, two long metal strips are wound concentrically to create hot-flow channel and cold-flow channel. The flow of the two fluids through a spiral heat exchanger was considered counter-current, the hot-flow circulates counter-clockwise and the cold-flow circulates clockwise. The upper surface, lower surface and outer-most side of the spiral heat exchanger were assumed to be insulated. A heat transfer effectiveness
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Lu, Chih-Huang, and 盧志皇. "Effectiveness Analysis of Tubular Crossflow Heat Exchanger." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/80759992826400939616.

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Books on the topic "Heat exchanger effectiveness"

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O'Hare, Mark S. The effectiveness of heat exchangers with one shell pass and three tube passes. 1985.

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Book chapters on the topic "Heat exchanger effectiveness"

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Cabezas-Gómez, Luben, Hélio Aparecido Navarro, and José Maria Saíz-Jabardo. "Heat Exchanger Effectiveness Data for Several Configurations." In SpringerBriefs in Applied Sciences and Technology. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09671-1_7.

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Timerbaev, Nail Farilovich, Omar Abdulhadi Mustafa Almohammed, and Asaad Kamil Ali. "Longitudinal Fin Effect on Effectiveness of Double Pipe Heat Exchanger." In Proceedings of the 4th International Conference on Industrial Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_63.

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Karunamurthy, K., G. Suganya, M. Ananthi, and T. Subha. "Predicting Effectiveness of Solar Pond Heat Exchanger with LTES Containing CuO Nanoparticle Using Machine Learning." In Applied Learning Algorithms for Intelligent IoT. Auerbach Publications, 2021. http://dx.doi.org/10.1201/9781003119838-14.

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Sethuramalingam, Ramamoorthy, and Abhishek Asthana. "Design Improvement of Water-Cooled Data Centres Using Computational Fluid Dynamics." In Springer Proceedings in Energy. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_14.

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AbstractData centres are complex energy demanding environments. The number of data centres and thereby their energy consumption around the world is growing at a rapid rate. Cooling the servers in the form of air conditioning forms a major part of the total energy consumption in data centres and thus there is an urgent need to develop alternative energy efficient cooling technologies. Liquid cooling systems are one such solution which are in their early developmental stage. In this article, the use of Computational Fluid Dynamics (CFD) to further improve the design of liquid-cooled systems is discussed by predicting temperature distribution and heat exchanger performance. A typical 40 kW rack cabinet with rear door fans and an intermediate air–liquid heat exchanger is used in the CFD simulations. Steady state Reynolds-Averaged Navier–Stokes modelling approach with the RNG K-epsilon turbulence model and the Radiator boundary conditions were used in the simulations. Results predict that heat exchanger effectiveness and uniform airflow across the cabinet are key factors to achieve efficient cooling and to avoid hot spots. The fundamental advantages and limitations of CFD modelling in liquid-cooled data centre racks were also discussed. In additional, emerging technologies for data centre cooling have also been discussed.
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Leger, B., and P. Andre. "Multi-Hole Cooling Effectiveness on Combustion Chamber Walls." In Heat Transfer Enhancement of Heat Exchangers. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9159-1_33.

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Marquardt, E. D., and R. Radebaugh. "Compact High Effectiveness Parallel Plate Heat Exchangers." In Cryocoolers 12. Springer US, 2003. http://dx.doi.org/10.1007/0-306-47919-2_67.

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Zhang, Li-Zhi. "Effectiveness-NTU Methods for Heat and Mass Transfer Processes." In Conjugate Heat and Mass Transfer in Heat Mass Exchanger Ducts. Elsevier, 2013. http://dx.doi.org/10.1016/b978-0-12-407782-9.00011-3.

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Made Arsana, I., and Ruri Agung Wahyuono. "Nanofluid-Enhancing Shell and Tube Heat Exchanger Effectiveness with Modified Baffle Architecture." In Heat Transfer - Design, Experimentation and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96996.

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As shell and tube heat exchanger is widely employed in various field of industries, heat exchanger design remains a constant optimization challenge to improve its performance. The heat exchanger design includes not only the architectural geometry of either the shell and tube configuration or the additional baffles but also the working fluid. The baffle design including the baffle angle and the baffle distance has been understood as key parameter controlling the overall heat exchanger effectiveness. In addition, a room of improvement is open by substituting the conventional working fluid with the nanomaterials-enriched nanofluid. The nanomaterials, e.g. Al2O3, SiO2, TiO2, increases the thermal conductivity of the working fluids, and hence, the more efficient heat transfer process can be achieved. This chapter provide an insight on the performance improvement of shell and tube heat exchanger by modifying the baffle design and utilizing nanofluids.
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Salleras, Marc, Inci Donmez-Noyan, Marc Dolcet, et al. "Managing Heat Transfer Issues in Thermoelectric Microgenerators." In Heat Transfer - Design, Experimentation and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96246.

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This chapter deals with heat transfer challenges in the microdomain. It focuses on practical issues regarding this matter when attempting the fabrication of small footprint thermoelectric generators (μTEGs). Thermoelectric devices are designed to bridge a heat source (e.g. hot surface) and a heat sink (e.g. ambient) assuring that a significant fraction of the available temperature difference is captured across the active thermoelectric materials. Coexistence of those contrasted temperatures in small devices is challenging. It requires careful decisions about the geometry and the intrinsic thermal properties of the materials involved. The geometrical challenges lead to micromachined architectures, which silicon technologies provide in a controlled way, but leading to fragile structures, too. In addition, extracting heat from small systems is problematic because of the high thermal resistance associated to heat exchanged by natural convection between the surrounding air and small bare surfaces. Forced convection or the application of a cold finger clearly shows the usefulness of assembling a heat exchanger in a way that is effective and compliant with the mechanical constraints of micromachined devices. Simulations and characterization of fabricated structures illustrate the effectiveness of this element integration and its impact on the trade-off between electrical and thermal behavior of the active materials in device performance.
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Gao, Tianyi, Bahgat Sammakia, and James Geer. "Transient Effectiveness Methods for the Dynamic Characterization of Heat Exchangers." In Heat Exchangers - Design, Experiment and Simulation. InTech, 2017. http://dx.doi.org/10.5772/67334.

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Conference papers on the topic "Heat exchanger effectiveness"

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Wu, Shuang-Ying, Xiao-Feng Yuan, You-Rong Li, Wen-Zhi Cui, and Liao Quan. "Exergy Transfer Effectiveness on Heat Exchanger." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13502.

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In this paper, the concept of exergy transfer effectiveness is put forward firstly and the expressions involving relevant variables for the exergy transfer effectiveness, the heat transfer units number and the ratio of cold and hot fluids heat capacity rate have been derived for the high and low temperature heat exchangers. Taking the parallel flow, counter flow and cross flow heat exchangers as examples, the numerical results of exergy transfer effectiveness are given and the comparison of exergy transfer effectiveness with heat transfer effectiveness is analyzed.
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Chen, Tony D. "Effectiveness of 3-Row Crossflow Heat Exchangers With Alternating Circuitry." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47104.

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Air-cooled heat exchangers with three tube rows are commonly seen in domestic air-conditioning systems. The analytical solutions of heat exchanger effectiveness for three-row plate fin-and-tube heat exchangers with alternating circuitries have been derived and expressed explicitly in terms of heat capacity ratio and number of transfer units in the recent study. These set of exact solutions serve as a basic tool in designing heat exchanger circuitry to its most accurate possible effectiveness. Comparison of plate-fin-tube heat exchanger effectiveness between airside unmixed and mixed for three-
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Chen, Tony D. "Effectiveness of 6-Row Crossflow Heat Exchangers Alternating Circuitry." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56705.

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Air-cooled heat exchangers with six tube rows are commonly seen in air-conditioning systems for large commercial and industry buildings. The analytical solutions of heat exchanger effectiveness for 6-row plate fin-and-tube heat exchangers with alternating circuitries have been derived and expressed explicitly in terms of heat capacity ratio, number of transfer units, and the dimensionless fluid temperature to the inlet of each row and section in this study. This set of exact solutions serve as a basic tool in designing heat exchanger circuitry to its most accurate effectiveness. Comparison of
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Sabharwall, Piyush, Mike Patterson, Vivek Utgikar, and Fred Gunnerson. "NGNP Process Heat Utilization: Liquid Metal Phase Change Heat Exchanger." In Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58197.

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One key long-standing issue that must be overcome to fully realize the successful growth of nuclear power is to determine other benefits of nuclear energy apart from meeting the electricity demands. The Next Generation Nuclear Plant (NGNP) will most likely be producing electricity and heat for the production of hydrogen and/or oil retrieval from oil sands and oil shale to help in our national pursuit of energy independence. For nuclear process heat to be utilized, intermediate heat exchange is required to transfer heat from the NGNP to the hydrogen plant or oil recovery field in the most effic
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Khalil, Ibrahim, Ahmad Abu Heiba, and Robert Boehm. "Comparison of Plate Fin Compact Heat Exchanger Performance." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66113.

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Plate fin heat exchangers (PFHE) are characterized by very close temperature approaches and high thermal effectiveness, large heat transfer area per unit volume, low weight per unit transfer and possibility of heat exchange between many process streams. These advantages are only limited by operating fluid temperatures and pressures. The main target of this paper is to study the performance of plate fin compact heat exchangers and to provide full explanation of previous comparison methods of compact heat exchanger surfaces (plain, strip, louvered, wavy, pin, perforated and vortex) used in plate
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Hasanuzzaman, M., R. Saidur, and N. A. Rahim. "Effectiveness enchancement of heat exchanger by using nanofluids." In 2011 IEEE Conference on Clean Energy and Technology (CET). IEEE, 2011. http://dx.doi.org/10.1109/cet.2011.6041444.

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Fakheri, Ahmad. "The Shell and Tube Heat Exchanger Efficiency and Its Relation to Effectiveness." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41633.

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The heat exchanger efficiency is defined as the ratio of the actual heat transfer in a heat exchanger to the optimum heat transfer rate. The optimum heat transfer rate, qopt, is given by the product of UA and the Arithmetic Mean Temperature Difference, which is the difference between the average temperatures of hot and cold fluids. The actual rate of heat transfer in a heat exchanger is always less than this optimum value, which takes place in a balanced counter flow heat exchanger. It is shown that for parallel flow, counter flow, and shell and tube heat exchanger the efficiency is only a fun
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Alam, M. Khairul, Roland J. Watts, and John Price. "Compact Carbon-Carbon Composite Heat Exchanger." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32094.

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Composite heat exchangers can provide significant reduction in the weight of a compact heat exchanger in comparison to metal heat transfer units. A Carbon-Carbon (C-C) composite heat exchanger core has been fabricated to study the heat transfer and friction characteristics of single layer plate-fin geometry. The plate and fins are both C-C composites, in which the carbon matrix is reinforced by high conductivity graphitic carbon fibers to improve the fin effectiveness of the heat exchanger. A heat flux is applied to the top and bottom of the heat exchanger core to heat an air stream passing th
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Druma, Adriana M., and Khairul M. Alam. "Combined Heat and Mass Transfer in Porous Media Heat Exchanger." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32093.

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A numerical and experimental study of heat and mass transfer has been carried out for an energy recovery ventilator with a porous media heat exchanger. The energy recovery ventilator selected for this study has a rotary periodic heat exchanger that can transfer heat and moisture from one air stream to another. Such heat exchangers can be operated with high effectiveness by using a low-cost porous matrix as the heat exchanger medium. The influence of porosity in the matrix has been studied numerically and the performance of the energy recovery ventilator in recovering both heat and moisture has
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Burmeister, Louis C. "Spiral-Plate Heat Exchanger Effectiveness With Equal Capacitance Rates." 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/ht2005-72041.

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Abstract:
A formula is derived for the dependence of heat exchanger effectiveness on the number of transfer units for a spiral-plate heat exchanger with equal capacitance rates. The difference-differential equations that describe the temperature distributions of the two counter-flowing fluids, neglecting thermal radiation, are solved symbolically to close approximation. Provision is made for offset inlet and exit of the hot and cold fluids at the outer periphery and for large heat transfer coefficients in entrance regions. The peak effectiveness and the number of transfer units at which it occurs are pr
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Reports on the topic "Heat exchanger effectiveness"

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William M. Soyars. Derivation of effectiveness-NTU method for heat exchangers with heat leak. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/788214.

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