Numerical investigation on the thermal-hydraulic performance of supercritical CO₂ in a modified airfoil fins heat exchanger
File(s)
Accepted version
Author(s)
Han, Zengxiao
Guo, Jiangfeng
Liao, Haiyan
Zhang, Zhongmei
Huai, Xiulan
Type
Journal Article
Abstract
The numerical studies on the modified airfoil fins channel using supercritical CO2 as working fluid showed that front-dense and rear-sparse (FDRS) and front-sparse and rear-dense (FSRD) distributions of fins could enhance heat transfer by improving the distribution uniformity of temperature difference in channel. The match of local dense distribution of fins with the region near pseudocritical point could obtain better overall thermal performance in the modified airfoil fins heat exchanger. The differences of thermal-hydraulic performance among channels with uniform, FDRS and FSRD distributions of fins could be explained with field synergy principle. The FSRD distribution of fins is the optimum scheme in the three distributions of the modified airfoil fins channel, because its comprehensive performance is 23–29 % higher than that of the uniform distribution of fins and 2–7.6 % higher than that of the FDRS distribution of fins. The present work provides insights into the mechanisms of supercritical CO2 heat transfer characteristics as well as practical guidance on the design and optimisation of relevant components.
Date Issued
2022-08
Date Acceptance
2022-05-20
Citation
Journal of Supercritical Fluids, 2022, 187, pp.1-12
ISSN
0896-8446
Publisher
Elsevier
Start Page
1
End Page
12
Journal / Book Title
Journal of Supercritical Fluids
Volume
187
Copyright Statement
Copyright © Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000810916600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
CARBON-DIOXIDE
CHANNEL
Chemistry
Chemistry, Physical
Distribution optimisation
Engineering
Engineering, Chemical
FIELD
Field synergy principle
FLOW
Modified airfoil fins heat exchanger
PCHE
Physical Sciences
PRINCIPLE
Science & Technology
Supercritical CO 2 (SCO 2 )
SYNERGY
Technology
Thermal-hydraulic performance
Publication Status
Published
Article Number
105643
Date Publish Online
2022-05-25