首页|Analysis of printed circuit heat exchanger (PCHE) potential in exhaust waste heat recovery
Analysis of printed circuit heat exchanger (PCHE) potential in exhaust waste heat recovery
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NSTL
Elsevier
Exhaust waste heat recovery technology based on power cycles requires high efficiency, low flow resistance, and a compact structure for exhaust gas heat exchangers. It is a huge challenge for traditional heat exchangers, such as double tube or shell and tube heat exchangers. A printed circuit heat exchanger (PCHE), which is a compact heat exchanger, has not been used in the heat exchange process between the exhaust gas and supercritical CO2. Focusing on this application, a novel design concept of PCHE based on a comprehensive performance index is proposed, which fully considers the differences in physical properties and working conditions between the exhaust gas side and the CO2 side. A series of experiments were carried out in a CO2-based transcritical power cycle system. The experimental test results show that the PCHE with a novel structure is stable and feasible. To further optimise the PCHE, a numerical analysis of different structures was conducted. The calculation results show that the comprehensive performance of the PCHE with an optimised structure was improved by 11.92%. This research shows that PCHE has great potential for achieving a compact design with excellent performance, especially for use in engine waste heat recovery.
CO2-based transcritical power cycleExhaust gas heat exchangerPerformance evaluation indexPrinted circuit heat exchanger
Shu G.、Tian H.、Shi L.、Zhang H.、Xuan W.、Chen T.、Li Y.
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State Key Laboratory of Engines Tianjin University
Department of Thermal Science and Energy Engineering University of Science and Technology of China
NSTL
Elsevier
