THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Yuan-Sheng Lin

,

Qi Jing

,

Yong-Hui Xie

NUMERICAL INVESTIGATION ON THERMAL PERFORMANCE AND FLOW CHARACTERISTICS OF Z AND S SHAPE PRINTED CIRCUIT HEAT EXCHANGER USING S-CO2

ABSTRACT
As a high-efficiency compact heat exchanger, the printed circuit heat exchanger has been widely applied into nuclear reactor and energy industry. In the present paper, the thermal hydraulic performance of printed circuit heat exchanger based on S-CO2 Brayton power cycle has been numerically investigated for various channel shape and bend angle. A total of seven different shaped channels including straight, Z-10, Z-20, Z-30, S-10, S-20, S-30 are modeled, and evaluated according to the heat transfer and friction performances within the Reynolds number of 5000-30000. The inlet temperature/outlet pressure of hot channel and cold channel are 553 K/2.6 MPa and 381 K/8.5 MPa, respectively. The flow patterns, average Nusselt number, friction factor, and heat exchanger effectiveness are obtained. On the comprehensive consideration of heat transfer enhancement and friction, the S-20 channel produces the best thermal performance. This investigation has provided important reference data for the design of advanced printed circuit heat exchanger in the energy industry.
KEYWORDS
printed circuit heat exchanger, supercritical carbon dioxide, thermal-hydraulic performance, S shape channel, Z shape channel
PAPER SUBMITTED: 2018-06-20
PAPER REVISED: 2018-09-28
PAPER ACCEPTED: 2018-11-15
PUBLISHED ONLINE: 2019-03-31
DOI REFERENCE: https://doi.org/10.2298/TSCI180620090L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 3, PAGES [S757 - S764]
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Numerical investigation on thermal performance and flow characteristics of Z and S shape printed circuit heat exchanger using S-CO2

© 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