R-22 및 R-290을 적용한 인버터 열펌프의 성능 시뮬레이션

In this study, a performance simulation of an inverter heat pump system using R-290 was performed and the results of simulation were compared with those of inverter heat pump using R-22. The simulation program was developed based on the ORNL heat pump model. Modeling of expansion device was modified to improve the accuracy of simulation and the subroutine for seasonal energy efficiency ratio was appended. As the results of this study, an inverter heat pump using R-290 showed higher COP compared with that using R-22. However, capacity of system with R-290 was lower than that with R-22. With an increase of the compressor frequency, COP decreases and capacity of the system increases in both case.