Low GWP 냉매를 적용한 히트펌프 부분부하 특성

Alternative refrigerant issue was increased in the past years due to low GWP. In this study, we research the characteristics of R-32, Standard and part load Performance of R-32. Optimal refrigerant charge amounts for R-32 systems were less by 20∼30% than those for R-410A system. Standard Cooling and Heating Energy Efficiency of R-32 system was increased over 5∼10% but discharge temperatures were higher by 6∼8℃ than R-410A system. Part load performances at cooling were increased by 6∼7% that those of R-410A system. Part load performances at heating were increased by 8∼9% that those of R-410A system. R-32 discharge temperature at SEER, SCOP condition were higher by 1∼12℃ than R-410A system.