| 冷水表面式冷却器的熵增分析与换热器强化传热评价准则研究 |
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| 引用本文： | 彭雄兵 彦启森. 冷水表面式冷却器的熵增分析与换热器强化传热评价准则研究[J]. 暖通空调, 1997, 27(4): 18-21 |
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| 作者姓名： | 彭雄兵 彦启森 |
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| 作者单位： | 清华大学 |
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| 摘 要： | 提出并采用了换热器强化传热性能评价准则，即强化换热器单位换热量的熵增应小于原来换热器单位换热量的熵增。定准则，试图从热力学第一定律与第二定律结合的角度，对强化传热效果质和量两方面的综合评价。基于该评判准则，选用了一种冷水表面式冷却器，对于没翅片结构的现任中换热器方案进行了流动、传热及热力学特性的计算；地计算结果的比较分析，确定了一种较优的冷却器翅片结构，并认为所 换热中化传热准则是合理可行的，可以
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| 关 键 词： | 换热器 熵增 强化传热 冷水表面 冷却器 |
Analysis of entropy increase in surface type air coolers and a performance evaluation criteria for enhanced heat exchangers |
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| Peng Xiongbing and Yan Qisen. Analysis of entropy increase in surface type air coolers and a performance evaluation criteria for enhanced heat exchangers[J]. Journal Heating Ventilating and Airconditioning, 1997, 27(4): 18-21 |
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| Authors: | Peng Xiongbing and Yan Qisen |
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| Affiliation: | Peng Xiongbing and Yan Qisen |
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| Abstract: | Proposes the performance evaluation creteria (PEC) based on whether the entropy increase per unit heat transfer capacity of an enhanced heat exchanger is less than that of the unenhanced one, which helps assess the enhanced heat exchange effects both qualitatively and quantitatively. Compares two air coolers with different extended surface structures through calculation and confirms applicability of the PEC in engineering. |
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| Keywords: | increase of entropy enhanced heat transfer evaluation creteria surface type air cooler |
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