Abstract:

In order to evaluate the design schemes for heat exchanger and other mechanical equipment，based on the extension theory，a multilevel assessing index system for heat exchanger design schemes was proposed，a multilevel matter-element model for the design scheme was established，and a multilevel assessing method for the design scheme was proposed. A comprehensive evaluation of shell and tube heat exchanger was realized，the objectivity and validity of the result were confirmed，and the result shows that the method is effective and reliable.

Key words: 换热器设计方案, 可拓理论, 综合评价

摘要：

为了更全面、系统、多层次地评价换热器等设备的设计方案，基于可拓学理论，提出了换热器设计方案多级可拓综合评价指标体系，创建了换热器设计方案多级可拓综合评价模型，提出了换热器设计方案多级可拓综合评价方法。以管壳式换热器的设计方案为例，对其进行了多级可拓综合评价，实现了设计方案的评估与优选，并验证了评价结果的客观性与有效性。该评价方法具有可靠性高、实用性强等特点。

关键词: 换热器设计方案, 可拓理论, 综合评价