基于斯特林发动机的冷热电联产系统分析

摘要

Trigeneration systems have a large potential of energy saving, the decisive values for thermodynamic evaluation of such systems are the primary energy rate( PER) and the primary energy saving rate( PESR) . Based on the first law of thermodynamics, the trigeneration system of Stirling engine is analyzedin detail. The results show that; in winter, PER and PESR have the same trend with the changing of x and 17,they increase with the increasing of x and rj, and the primary energy saving rate is up to 29. 7% on average; in summer, PER and PESR have the same trend with the changing of x and 77, they decrease with the increasing of x and increase with the increasing of 17, and the primary energy saving rate is up to 33. 15% on average.%三联产系统的节能性具有很大的潜力,对于该系统的热力学评价指标主要是一次能源利用率PER和一次能源节约率PESR.基于热力学第一定律,对以斯特林发动机为动力装置的三联产系统进行了热力学分析,结果表明:冬季工况,PER和PESR随x、η变化趋势相同,均随x、η增加而增大,一次能源节约率PESR平均可达29.7％；夏季工况,PER和PESR随x、η变化趋势相同,均随x增加而减小,随η增加而增大,一次能源节约率PESR平均可达33.15％.