Abstract

Air side heat transfer and pressure drop for ø9.52 fin-tube heat exchanger with various types of slit and louver fins were measured, and compared with wave-slit fin. Longitudinal and transverse tube spacings of the heat exchangers are 21.65mm and 25mm respectively. Actual heat exchanger was tested using water, and the tests were performed for 2 row heat exchangers with 3 different fin spacings, 1.3, 1.5 and 1.7mm. The overall performance of the enhanced fins was evaluated by comparing heat transfer coefficient with respect to fan power.

Keywords

• Fin-tube heat exchanger;
• Wave-slit fin;
• Slit fin;
• Louver fin;
• Heat transfer coefficient;
• Pressure drop

• 휜-관 열교환기;
• 웨이브-슬릿 휜;
• 슬릿휜;
• 루버 휜;
• 열전달계수;
• 압력 강하;