히트펌프용 마이크로채널 열교환기 최적설계

Abstract

본 연구에서는 히트펌프용 마이크로채널 열교환기의 일반화된 최적설계과정을 제시하였다. 이를 위하여 마이크로채널 열교환기의 다양한 형상 인자를 고려할 수 있는 성능해석 프로그램을 개발하였다. 프로그램은 기존 실험결과와 열전달량 오차범위 4%내에서 일치하였다. 최적설계 과정의 타당성을 입증하기 위하여 기준 열교환기와 최적설계된 열교환기의 성능을 비교하였다. 최적설계된 열교환기는 기준 열교환기에 비하여 JF지수와 PECV지수가 각각 14%, 26% 증가하였다.|A general procedure for the optimal design of a micro-channel heat exchanger for heat pump systems is presented. For this design, a performance analysis program that can reflect the various geometric variables of the micro-channel heat exchanger was developed. The deviation between simulated and experiment results of previous research was within 4% for the heat transfer rate. To prove the feasibility of the optimal design process, the performance of the reference heat exchanger was compared to that of the optimized heat exchanger. The JFair and PECV of the optimized heat exchanger were enhanced by 14% and 26%, respectively.; A general procedure for the optimal design of a micro-channel heat exchanger for heat pump systems is presented. For this design, a performance analysis program that can reflect the various geometric variables of the micro-channel heat exchanger was developed. The deviation between simulated and experiment results of previous research was within 4% for the heat transfer rate. To prove the feasibility of the optimal design process, the performance of the reference heat exchanger was compared to that of the optimized heat exchanger. The JFair and PECV of the optimized heat exchanger were enhanced by 14% and 26%, respectively.