摘要
本文对内可逆卡诺热机工质与热源间最佳温差的确定,进行了有限时间热力学的分析.讨论了最佳温差优化的目标函数.通过拉格朗日乘数法求极值原理,推导得到了确定功率下计算工质与热源间最佳温差的方程式和图线.典型计算表明,根据本文所得方程和有关图线计算所得的温差甚为接近实际.此外,还讨论了一些重要参数的影响.
This papar presents a finite thermodynamic analysis to determine the optimum temperature difference between substance and heat sources for an internal reversible Carnot cycle. The object function, calculation equations and curves for getting the optimum temperature difference are discussed and developed by using Lagrange' s method of undetermined multipliers. Some typical calculations show that the results given here are closer to those used in engineering practice. The effects of some important parameters are also discussed.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
1993年第1期21-28,共8页
Journal of Xi'an Jiaotong University
关键词
有限时间
热力学
卡诺热机
最佳化
finite time thermodynamics
Carnot cycle
optimization
