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Heat transfer analysis of fin-and-tube heat exchangers with flat and louvered fin geometries |
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| Affiliation: | 1. Department of Mechanical Engineering, School of Engineering and Architecture, Eski?ehir Osmangazi University, Bat?-Me?elik 26480, Eski?ehir, Turkey;2. Arçelik Refrigerator Plant, Eski?ehir Organized Industrial Zone, 1st Street, 26110, Eski?ehir, Turkey;1. Energy Engineering, Federal University of ABC, Santo Andre, Sao Paulo, Brazil;2. Department of Mechanical Engineering, Polytechnic School, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil;3. Angewandte Mechanik, EU Researcher, University of Munchen, Munchen, Germany;4. Department of Mechanical Engineering, Sao Paulo State University, Ilha Solteira, Sao Paulo, Brazil |
| Abstract: | This paper analyzes the fluid flow and heat exchange on the air side of a multi-row fin-and-tube heat exchanger. A comparison is given between fin-and-tube heat exchanger characteristics with flat and louvered fins in a wider range of operating conditions defined by Reynolds number (based on fin spacing and air frontal velocities). The detailed representation of calculated data for the louvered heat exchanger shows significantly better heat transfer characteristics and a slightly higher pressure drop. The CFD procedure was validated by comparing the numerical simulation results with the experimental results showing the minimal average Nusselt number deviation and an almost perfectly corresponding pressure drop. |
| Keywords: | Fin-and-tube heat exchangers Louvered fins Flat fins Heat transfer analysis CFD analysis Échangeurs de chaleur à tubes à ailettes Ailettes persiennes Ailettes plates Analyse du transfert de chaleur Analyse en termes de mécanique des fluides numérique |
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