Abstract: This paper proposes a combinatorial optimization method for components selection and matching in engineering projects. This method includes classifying components into one or more groups of first category and one or more groups of second category; collecting parameter data of multiple suppliers through setting combination matching control relationships; making comparison based on the collected parameter data; selecting and matching all the components needed in the project from the two categories; and calculating the comprehensive evaluation score gathering result data for all the components and the based on the integrated score gathering result comparison data for the first category as well as the single parameter result comparison data for the second category. Taking the tendering and bidding of air cooler package equipment as example, the paper details the application practice of this innovative method and clarifies the extensive application enlightenment from this method and the example.

Key words: components selection and matching, combinatorial optimization, combination matching control, parameter comparison, relativity, duplicate removal, iteration