Entropy transfer efficiency-effectiveness method for heat exchangers, part 1: Local entropy generation number and operation performance limits

• Published in: Energy (Oxford) Vol. 304; p. 132133
• Main Author: Zhao, Bo
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 30.09.2024
• Subjects: cold; convection; Counterflow heat exchanger; energy; entropy; Entropy generation rate; Entropy transfer efficiency; Linear temperature difference approach; Local entropy generation number; Operating performance limits; temperature; Operating performance limits; Entropy generation rate; Entropy transfer efficiency; Counterflow heat exchanger; Local entropy generation number; Linear temperature difference approach

Here, to resolve the open problem of the second-law efficiency evaluation for heat exchangers, an efficiency-effectiveness method is developed from pure convection theory, where the entropy transfer efficiency defined as the outlet temperature ratio of cold and hot fluids exchanging entropy and loca...