摘要
本文利用数值优化计算方法对空冷机组回热系统进行了焓升最佳分配,从而提高了机组热经济性.在最佳分配的基础上.本文利用热经济学和传热学原理,对空冷机组的回热级数进行了定量分析.结果表明,对于空冷机组,在进行焓升最佳分配计算时,回热级数不能因背压提高而减少.
Optimum enthalphy step rises for the regenerative systems of an air-cooled power unit is obtained by numerical optimization calculations for improving the thermal efficiency of the units. Based on optimal distribution, the effect of the number of regenerative stages is discussed quantitatively from the point of view of thermal economics and heat transfer; The results show that the number of regenerative stages in air-cooled units should not be reduced with increasing back pressure for calculating optimum cnthalphy rise distribution. 10figs, 6 tables and 8refs.
出处
《动力工程》
CAS
CSCD
1991年第2期25-31,共7页
Power Engineering
