摘要
利用有限时间热力学分析了具有热阻、热漏和回热损失的不可逆斯特林循环生态学经济性能优化ECOP评判标准,推导了不可逆斯特林循环关于功率输出、效率、经济学函数和ECOP优化分析的数学表达式,利用数字分析以及热漏、回热时间和回热器效率研究上述参数之间的相互关系。研究结果表明:在最大ECOP工作条件下工作的斯特林循环比在最大生态学函数条件下的斯特林循环在熵产率和热效率上具有明显的优势。
The ecological coefficient of performance criteria of an irreversible Stirling engine cycle with heat resistance,heat leakage and regenerative losses is analyzed in this paper by using finite-time thermodynamics.The optimal analytical formulae about power output,efficiency,ecological function and of the irreversible Stirling engine cycle are derived.And the relations among them are studied by detailed numerical examples.The effect of heat Leakage,regenerative time and regenerative efficiency are studied.The results indicate that the Stirling engine cycle working at maximum condition has a significant advantage in entropy-generation rate and thermal efficiency than that working at maximum ecological function condition.
出处
《节能》
2011年第11期60-63,4-5,共4页
Energy Conservation
关键词
有限时间热力学
斯特林循环
生态学性能
finite-time thermodynamics
stirling engine cycle
ecological coefficient of performance
