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作者在上一讲中,首先介绍了按最大(火用)损失发生的部位或环节确定节能主攻方向的方法,即所谓的薄弱环节(火用)分析。然后介绍了按最小单元(火用)效率确定节能主攻方向的分析方法。 上述这两种方法都只是孤立地考察各个部位(或环节)的(火用)损失或各个单元的热力学完善性,由此确定节能的主攻方向。事实上,各个部位(或环节)或各个单元是构成系统的细胞,它们之间既相依赖、又相制约的关系就是系统的结构。即使是由相同单元组成的系统,
In the previous lecture, the author first introduced the method of determining the main energy-saving direction according to the location or link of the maximum (exergy) loss, namely the so-called weak link exergy analysis. Then, the analysis method of determining the main energy-saving direction according to the minimum unit exergy efficiency is introduced. The above two methods only examine the exergy loss of each part (or part) or the thermodynamic perfection of each unit in isolation, so as to determine the main direction of energy saving. In fact, each part (or link) or each unit is the cell that makes up the system. The relationship between them is dependent on each other, and the relationship between each other is the structure of the system. Even systems consisting of the same unit,