| Title |
Design of Gas-Injection Port of an Asymmetric Scroll Compressor for Heat Pump Systems |
| Authors |
Yong-Hee Kim ; Hyun-Jin Kim |
| DOI |
http://dx.doi.org/10.6110/KJACR.2015.27.6.300 |
| Keywords |
가스인젝션 ; 스크롤 압축기 ; 인젝션 포트 설계 ; 난방능력 ; 냉방능력 Gas injection ; Scroll compressorInjection port design ; Heating capacity ; Cooling capacity |
| 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 12 kgf/cm2A 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 240° and 200° inward from the scroll wrap end angle for low-temperature and standard heating conditions, respectively, while the maximum COP improvement was at 365° and 280°, respectively. A considerable improvement in cooling capacity was also found at the injection port angle of 240°. |