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Analytical and empirical determination of thermal performance of louvered heat exchanger – Effects of air flow statistics
Authors:Mahmoud Khaled  Fabien Harambat  Hassan Peerhossaini
Affiliation:1. Thermofluids, Complex Flows and Energy Research Group, Laboratoire de Thermocinétique, CNRS-UMR 6607, Ecole polytechnique, University of Nantes, rue C.Pauc, BP 50609, 44 306 Nantes cedex 3, France;2. PSA Peugeot Citroën, Velizy A Center, 2 route de Gisy, 78 943 Vélizy Villacoublay, France;1. Department of Civil Engineering, University Putra Malaysia (UPM), 43400 Serdang, Malaysia;2. Zamin Wesal Iranian Consulting Engineers ltd, Tehran, Iran;3. Department of Civil Engineering, University Putra Malaysia (UPM), 43400 Serdang, Malaysia;1. LEA, Department of Electronics, University of Batna 2, Batna 05000, Algeria;2. LEPCM, University of Batna 1, Batna 05000, Algeria;1. Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP, United Kingdom;2. Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom;1. School of Energy Engineering, Yulin University, Yulin 719000, China;2. Schools of Energy and Evironmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Abstract:Using the basic equations for modeling heat transfer through heat exchangers, an analytical approach is developed to determining the thermal performance of cross-flow air-cooled heat exchangers as a function of the flow statistics of the upstream cooling air. A two-dimensional computational code is also developed to calculate heat-exchanger performance in relation to the airflow topology upstream of the heat exchanger induced by its integration in complex environments such as the car underhood compartment. The analytical and numerical results show satisfactory agreement: the mean relative error in heat exchanger thermal performance determined by the numerical computation and the analytical approach is about 0.5%.
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