本文是美国空调和制冷学会的一份最新研究报告,报告中对全球空调设备,包括居民住宅用的单元式空调机和热泵以及商业用大型离心式冷水机组在近20年中产品效率的快速提高作了全面调查统计和分析,内容分析得很实际,可供我国空调设备的制造业和用户们参考。 This article is the latest research report of the American Society of Air-Conditioning and Refrigeration, which reports on the rapid increase in the efficiency of global air-conditioning equipment, including unitary air conditioners and heat pumps for residential use, and commercial large-scale centrifugal chillers in the last 20 years. Comprehensive survey statistics and analysis were conducted, and the content was analyzed very practically. It can be used as reference for manufacturing and users of air-conditioning equipment in China.