AIR-CONDITIONING WATER CHILLER WITH VARIABLE SPEED AND TOTALLY OIL-FREE COMPRESSORS

摘要：

The energy performances of a 440-kW air-conditioning factory-assembled water chiller with two totally oil-free, variable speed compressors are presented. The new water chiller has been designed for an institutional HVAC system with mostly process air-conditioning charges. Several thermodynamic and electrical parameters allowed calculating the Non-Standard Part Load Values for summer operation in a cold climate. The results prove that variable-speed compressors with magnetic bearings and digital electronic controls for air-cooled water chillers achieve high energy efficiencies. Compared to the replaced 25-years old water chiller, the part-load efficiency has been improved by 49％, while ensuring similar indoor thermal conditions for process equipment and occupants, and generating less noise.

作者: V.Mine

作者单位: Hydro-Québec Research Institute, Laboratoire des technologies de l’énergie (LTE),Shawinigan, Canada

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）