(火用)经济系数在制冷方案选择中的应用

Exergy - economic coefficient in selection of refrigeratin system schemes

考虑能量利用的完善性((火用)效率)和合理性(能级匹配),提出了(火用)经济系数的表达式,并把其作为制冷方案选择 的依据,对三种制冷方案进行了(火用)经济性的计算比较。得出的结论与只考虑经济性或只考虑(火用)效率时得出的结论截然不同, 而这一结论更符合节能的目的。

Taking account of the perfection (exergy efficiency) and rationality (match of energy level) of enegy utilization an expression of the exergy - economic coefficient was proposed. On the base of the exergy - economic coefficient, the selection of refrigeration system schemes was discussed. The exergy - economic coefficients of three kinds of refrigertion plans were calculated and compared. conclusion from this method is completely different from the conclusions from methods that only think of economy or exergy efficiency and this conclution is agreed with the requirments of energy economy.