20 September 2011
Heat pump system as a cooling and heating unit becomes increasingly popular and important. Especially, its efficiency and availability for green products attracted public attentions. For the higher efficiency, the heat exchanger has a great role in the heat pump system. In this paper, the performance of heat exchanger fin such as offset strip fin is studied and analyzed. Offset strip fin is designed to enhance the heat transfer by eliminating flow stream conduction effect. Several parameters such as fin pitch, height are examined. Experiments are performed for the comparison. In addition, for predicting the performance, a correlation is introduced and simulation is conducted. Pressure drop and heat transfer
characteristics are identified. When compared with louver fin, the performance is found to be more effective under the low velocity region.