DEVELOPMENT OF A COMBINED COMPRESSOR-EXPANDER FOR TRANSCRITICAL CO2 SYSTEM

摘要：

The most effective way to improve the efficiency of the transcritical CO2 cycle is to replace the throttling valve with an expander. For the recovery of expansion work of expander, an effective way is direct work return from the expander to the compressor. In this paper, a hermetic combined compressor-expander was proposed. The compression part is a two-stage rolling piston type compressor. The expansion part is a two-cylinder rolling piston expander without inlet valve and outlet valve. The prototype of the combined compressor-expander has been developed. The compressor and the expander have been studied separately and the performance of the compressor part has been comprehensively measured on a CO2 compressor performance test rig.

作者: Jun YANG Li ZHANG Jiangping CHENG Ping LU

作者单位: School of Mechanical Eng., Shanghai Jiao tong University., Shanghai 200030, China;R&D Centre, Shangh R&D Centre, Shanghai Hitachi Electrical Appliances Co. Ltd., Shanghai, 201206, China School of Mechanical Eng., Shanghai Jiao tong University., Shanghai 200030, China

会议类型: 国际会议

会议名称: The 22nd International Congress of Refrigeration(第22届国际制冷大会)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-21（万方平台首次上网日期，不代表论文的发表时间）