HFC와 하이드로 카본으로 구성된 혼합냉매의 성능평가

초록

In this study, refrigerant mixtures composed of R32, R125, R1270(Propylene), R290(Propane) were tested in a breadboard heat pump in an attempt to replace R22 used in most of the residential air conditioners and heat pumps. The heat pump was of 1 ton capacity and water was employed as the secondary heat transfer fluids. All tests were conducted ARI test A condition. The performance of all test mixtures was compared to that of R410A. Binary mixtures composed of R32, R1270 were shown to have 0.64∼4.17% higher capacity and 1.33∼2.73% lower COP than R410A. On the other hand, Binary mixtures composed of R125, R1270, R290 were shown to have 18∼23% lower capacity and 13∼22% lower COP than R410A. In case of refrigerant mixtures which have high specific heat such as R125, when we use a SLHX, capacity and COP of theirs show increase 5∼10% in capacity and COP