A performance evaluation method based on the Pareto frontier for enhanced microchannel heat sinks
Yang, Min 1Li, Mo-Tong 1Yu, Xin-Gang 1Huang, Lei 1Zheng, Hong-Yang 1Miao, Jian-Yin 1Cao, Bing-Yang1
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作者信息
1. Tsinghua Univ
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Abstract
A performance evaluation method based on the Pareto frontier for different types of enhanced microchannel heat sinks has been proposed and applied to find the best comprehensive performance. The concept of Design Optimization Area (DOA) developed in our previous work is used for comprehensive evaluation and a microchannel heat sink within DOA means that the pumping power P-p and the total thermal resistance R-t could be both reduced compared with user demands. The comprehensive evaluation method consists of three steps: (1) conducting a multi-objective optimization of various microchannel structures to obtain the Pareto frontiers; (2) determining DOA above those Pareto frontiers based on user demands; (3) selecting the best one with the largest DOA. The immediacy and practicability of the method are verified through comparative studies. Detailed comparisons through this method between a hybrid microchannel heat sink and other three enhanced microchannel structures have been conducted. The results indicate that the hybrid microchannel has superior performance and it enables a lower P-p under the same R-t. The proposed evaluation method can also be applied to evaluate the comprehensive performance of various heat exchangers by changing the optimization objectives according to the limits or priorities of users.
NSTL
Elsevier