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通过对简单换热器的火用效率进行分析,得出了在忽略热损失及压力损失时,换热器的火用效率不仅与换热温差的大小有关,而且与热冷流体的温度有关的结论;提出了在热经济分析中,不能简单地根据火用效率的高低来判断换热器的结论。
By analyzing the exergy efficiency of the simple heat exchanger, it is concluded that the exergy efficiency of the heat exchanger is not only related to the temperature difference of the heat exchanger but also to the temperature of the hot and cold fluid, while neglecting the heat loss and pressure loss Conclusion; In the thermal economic analysis, the conclusion that the heat exchanger can not be judged simply based on the exergy efficiency is proposed.