히트 펌프용 비대칭 스크롤 압축기의 가스 인젝션 포트 설계

Abstract

For an asymmetric scroll compressor for heat pump application, a numerical simulation was carried out to investigate the effects of injection port design on the compressor`s performance under gas injection. To validate the simulation, the numerical results were compared with experimental results obtained from a scroll compressor with a base injection port design. There was good agreement between simulation and experimental results, with around a 1% difference in the injection mass flow rate when the injection pressure was below for the heating mode. Various injection port angular positions were numerically tested to yield better injection performance. The largest improvement in heating capacity was obtained at angles of and inward from the scroll wrap end angle for low-temperature and standard heating conditions, respectively, while the maximum COP improvement was at and , respectively. A considerable improvement in cooling capacity was also found at the injection port angle of .