Abstract
Based on the exergy-economic analysis of heat exchanger heat transfer and flow process, two new exergy-economic criteria which are defined as the total costs per unit heat transfer rate ηt for heat transfer exchanger and the net profit per unit heat recovery rate η r for heat recovery exchanger respectively are put forward. Furthermore, the application of criteria is illustrated by the evaluation of down-flow, counter-flow and cross-flow heat exchangers performance. The methods employed and results presented in this paper can serve as a guide for the performance evaluation of heat exchangers.
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