物流匹配分类与公用工程关系

The Classification of Cold and Hot Stream Match and Its Relationship with Utility

物流的匹配是换热器网络合成中极为重要的内容。合理地划分物流匹配可以简化换热器网络的设计，易于形成最优的换热方案。全部物流匹配问题概括为３种类型，即单纯窄点之下物流匹配、单纯窄点之上物流匹配、存在窄点的物流匹配。３种不同类型的物流匹配对冷、热公用工程要求不同。采用解题表方法可以判定物流匹配所属类型。

All stream matches can be classified as three kinds, i.e. the match below pinch point, the match above pinch point and the match with pinch point. The problem table method can be used to identify the type of matches. Each kind of match has its own requirements for utility.