THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Yulong Ma

,

Qingdong Hou

,

Tianyi Wang

PERFORMANCE STUDY ON A PRINTED CIRCUIT HEAT EXCHANGER COMPOSED OF NOVEL AIRFOIL FINS FOR SUPERCRITICAL CO2 CYCLE COOLING SYSTEM

ABSTRACT
The printed circuit heat exchanger (PCHE) plays a vital role in the supercritical CO2 cooling system for hypersonic aircraft, which significantly affects the efficiency and stability of the cooling system. In this study, a novel structure is proposed to improve the overall performance of airfoil fin PCHE. The RP-3 aviation kerosene and SCO2 are used as working fluids to study the thermal-hydraulic performance and the enhancement mechanism. The results indicate that the overall performance of the PCHE can be improved by slotting the airfoil fin. With the increase in groove thickness, the thermal performance of the new airfoil fin PCHE first improves and then worsens, while the hydraulic performance of the PCHE first worsens and then improves. Compared with the original airfoil fin, the fin with a groove thickness of 0.6 mm reduces the pressure drop by up to 15% without affecting the thermal performance, while the fin with a groove thickness of 0.1 mm increases the heat transfer by 4%-5%. In addition, the optimal mass-flow ratio of SCO2 to kerosene is obtained by thermal resistance matching under different working conditions, which is helpful for the design and optimization of airfoil fin PCHE based on the SCO2 cycle cooling system for scramjets.
KEYWORDS
printed circuit heat exchanger, supercritical CO2 cycle, airfoil fin, heat transfer performance, pressure drop
PAPER SUBMITTED: 2022-04-08
PAPER REVISED: 2022-06-17
PAPER ACCEPTED: 2022-06-20
PUBLISHED ONLINE: 2022-08-13
DOI REFERENCE: https://doi.org/10.2298/TSCI220408112M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [891 - 903]
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Performance study on a printed circuit heat exchanger composed of novel airfoil fins for supercritical CO2 cycle cooling system

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence