热交换器是过程机械的典型产品,是工艺过程中的关键设备之一,在现代工程中占有重要的地位.随着能源问题的日渐突显,节能降耗成为工业生产的重要目标,研制适用于不同工况要求的高效能换热设备已成为当前发展节能技术的关键,相应的设计方法和软件亟待开发.基于技术性能与经济性能综合考虑的思想,采用模糊优选理论中的模糊综合评价法和模糊物元分析法,针对紧凑式热交换器半结构性的特点,利用优选关系对比法进行了量化并建立了三级模糊优化选型,得到了较为理想的结果.%Heat exchangers are the typical products of the process equipment, which have been playing an important role in process engineering. With the increase of awareness of energy shortage, saving energy and reducing waste have become the major principle of industrial production. The key to develop the energy saving technology has been the design of the highly efficient heat exchangers adapted to the different working conditions. It is thus of urgent need to develop the related design methodology and software. Because of the difficulties met in conception design of compact heat exchangers, a multi-level, multi-factor and non-structural fuzzy optimum decision model is used in the optimal selection of compact heat exchangers. A three-level fuzzy optimum decision is introduced with success to cover most of the effective factors and determine the optimal design projects, which includes six design projects and eight influencing factors.
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