基于斯特林发动机的冷热电联产系统分析

Analysis of Trigeneration System Based on Stirling Engine

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%。

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 η,they increase with the increasing of x and η,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 η,they decrease with the increasing of x and increase with the increasing of η,and the primary energy saving rate is up to 33.15%on average.