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以广义Redlich-Kwong气体为工质的不可逆回热式斯特林热机循环输出功率和效率
Power output and efficiency of irreversible regenerative Stirling heat engine using generalized Redlich-Kwong gas as the working substance
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摘要: 研究了热阻、回热损失和热漏等多种不可逆因素对以广义Redlich-Kwong气体为工质的斯特林热机性能的影响，给出了斯特林热机输出功率和效率的具体表达式并分析非理想回热特性及循环主要性能参数(如循环体积比及工质高低温比等)对循环输出功率和效率的影响。同时指出，只有在理想回热及无热漏的情况下，气体斯特林热机的效率才能达到卡诺效率。
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关键词:
- 广义Redlich-Kwong气体 /
- 斯特林热机 /
- 输出功率 /
- 效率
Abstract: Performance of a generalized Redlich-Kwong gas Stirling heat engine is investigated, in which the multi-irreversibilities including thermal resistance, regenerative and heat leak losses are taken into account. General expressions for power output and efficiency of the Stirling heat engine are derived, and effects of the nonperfect regeneration and some important performance parameters such as the volume ratio and the temperature ratio are analyzed and discussed. Moreover, it is shown that the efficiency of the gas Stirling heat engine with perfect regeneration and no heat leak can reach that of the Carnot heat engine. -
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