TWO-STAGE CYCLE WITH VAPOR INJECTION COMPRESSOR
As the increasing ambient temperature, the cooling load increases, the capacity and COP of air conditioning systems decrease. Consequently, cooling systems are commonly oversized to match the highest cooling load at high ambient temperatures, resulting in an oversized system with low system efficiency compared to small size systems at low ambient temperatures, which occur in most of operating hours however. The vapor injection cycle is well-suited to improving the system performance at extreme conditions, but it did not receive much attention since it requires a two-stage compressor. This research provides experimental results of the potential improvement in performance of an air conditioning system equipped with a vapor-injected scroll compressor and an internal heat exchanger. Test results show that the cooling capacity and COP were increased by 11.3％ and 3.2％, respectively, at 46℃ ambient temperature, as compared to those of a conventional air conditioning system without a vapor injection.
Yunho HWANG Xudong WANG Reinhard RADERMACHER
Center for Environmental Energy Engineering, University of Maryland 3163 Glenn Martin Hall Building, College Park, Maryland 20742, USA
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）