Finally, with the method of exergy concept, the energy utilization efficiency of the system is deeply analyzed.
最后，采用火用分析方法对系统优化前后的能源利用效果从“质”和“量”的角度进行了深入的分析。
The problems of steam supply system of refinery and steam balance principles are studied, several energy loss cases are analyzed by exergy concept, and energy utilization optimization is discussed.
分析了炼油厂蒸汽系统存在的问题和平衡的原则。用（?）概念计算分析了几个造成能量损失的过程，探讨了优化方向并进行了实例分析。
Acknowledge the concept of Exergy and its calculation.
了解火用的概念及其计算。
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