Full Text:   <3399>

CLC number: TU83

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2011-03-29

Cited: 1

Clicked: 6613

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.6 P.428-437

http://doi.org/10.1631/jzus.A1000358


Improved thermal performance of a hydronic radiant panel heating system by the optimization of tube shapes


Author(s):  Young T. Chae, Kwang Ho Lee, Jae Sung Park

Affiliation(s):  School of Architecture, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA, Department of Architectural Engineering, Hanbat National University, Daejeon 305-719, South Korea, Department of Mechanical Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA

Corresponding email(s):   kwhlee@hanbat.ac.kr

Key Words:  Radiant panel system, Analytical modeling, Computational fluid dynamics (CFD), Tube shape, Energy saving



Abstract: 
The thermal performance enhancement of the hydronic radiant floor heating system by tube shape refinements is investigated in this paper. Both analytical and detailed numerical modelings are carried out to predict the performance of the radiant system. While the simple analytical model briefly investigates the possibility of the effect of the tube shape improvement with the parametric analysis, the commercial computational fluid dynamics (CFD) code (Ansys/CFX) is used to perform the detailed 3D analysis under different tube shape conditions. The fin thickness, the number of fins, and the tube thermal conductivity turn out to have significant effects on the radiant system performance. The potential energy saving impacts of the tube shape refinements are also discussed. The tube shape improvement turns out to increase the floor surface temperature and to decrease the hot water temperature drop across the system, resulting in heating energy savings.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2025 Journal of Zhejiang University-SCIENCE