计算了一次蒸汽经减温减压后的火用损失。
The exergy loss of primary steam after temperature and pressure reduction is calculated.
分析表明，传热不可逆损失是火用损失的主要部分，占40%。
Further, the exergy analysis reveals that the irreversibility of heat transfer (40 percent) is the major source of exergy destruction.
进而通过热力系统单元的划分，利用火用分析法计算得出系统的火用损失分布规律，并绘制出火用流图。
Then through modules division of the thermal system, calculated distribution of energy loss using energy analysis system, and draw a flow diagram.
应用推荐