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Study on the Optimum Thermal Performance of Metallic Foam Heat Exchanger
Meihua Jin(김미화 ),Myoungkuk Ji(지명국 ),Younhwan Lee(이윤환 ),Hanshik Chung(정한식 ),Hyomin Jeong (정효민 ) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.6
Since metallic foam will increase the performance of heat exchanger, it has caused many researchers' attention recently. Our research based on the model that metallic foams applied to heat exchanger. In this case, there is three kinds of heat transfer mechanisms, heat conduction in fibers, heat transfer by conduction in fluid phase, and internal heat change between solid and fluid phases. In this paper we study both the hydraulic and thermal aspect performance. Pressure drop along airflow direction will be presented. As thermal aspect, we first discuss the acceptance of applying thermal equilibrium among the two phases, then to calculate the dimensionless temperature profile, the heat transfer coefficient and Nu number in 7 Aluminum foams.