루버핀 열교환기 설치각에 의한 열적 성능 변화

Abstract

We conducted experiments of repeated frosting and defrosting cycles according to heat exchanger inclination angles (0° and 45°) of a louvered fin heat exchanger and investigated the variations in heat transfer rate, air pressure drop, remained water and defrosting efficiency. The heat transfer rate and air pressure drop in the 45° inclination angle changed less than in 0° inclination angle during repeated cycles. The 45° inclination angle improved drainage ability of the louvered fin heat exchanger and decreased the mass of remained water in the louvered fin heat exchanger. The defrosting efficiency changed less during repeated cycles for 45° inclination angle than for 0° inclination angle.