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中文摘要：
基于有限时间热力学的理论,引入无因次熵产率,提出转换温度的概念,以无因次熵产率和无因次制冷率表示实际制冷循环热力性能完善程度和制冷能力大小,分析了实际蒸气压缩制冷循环反映温差的各无量纲量和性能参数比等对循环性能的影响及相互关系.研究结果表明,在不增加不可逆传热温差的情况下,环境温度不变,可采用提高低温热源温差比、降低高低温热源比和性能参数比的方法来提高制冷率.
英文摘要：
On the basis of the finite time thernodynamic theory, the concepts of non-dimensional entropy rate number and transform temperature were brought forward. The non-dimensional performance parameters and the ratio of function to parameters of the actul irreversible vapor compression refrigeration system as well as their mutual relationships were analysed. The non-dimensionl entropy rate number and the non-dimenstional refrigeration rate were adopted unitedly to represent the practical thermodynamic performance and the ability of refrigeration. The results indicate that,under the condition of maintaining the temperature difference of irreversible heat transfer not increasing and keeping the environment temperature constaut, the refrigeration rate can be raised by heightening temperature differenceratio of low temperation source, reducing the function- parameter ratio and reducing the highand low temperature ratio.
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