Researches on A Novel Gas Heat Pump with Multi-stage Transmission Ratios
This study reviews current researches on gas heat pumps (GHP) in which the gas engine and the compressor are connected with a single-stage or fixed transmission ratio (engines speed/compressors speed).A novel concept of gas heat pump with multi-stage transmission ratios is presented in this paper.Compared with conventional GHP with a fixed transmission ratio, the novel GHP renders its engine to operate with a higher efficiency under more heating/cooling operation conditions to enhance the primary energy ratio (PER) further.Advantages from multi-stage transmission ratio connection, such as PER improvement and running speed extension of compressor are theoretically analyzed.Results show that GHP with multi-stage transmission ratios has a higher PER and broader compressor speed range, and in particular, through transmission ratio switch under different load conditions, it is beneficial for engine to run with higher efficiency during a whole-year operation.
gas heat pump transmission ratio gas engine
Zhao Haibo
Department of Refrigeration, Ocean SchooI,Yantai University,Yantai, China, 264005
国际会议
湖北荆州
英文
7-10
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）