Numerical and experimental study on the characteristics of radiant ceiling systems

被引：9
作者：
Yuan, Yongli [1 ]
Zhou, Xiang [2 ]
Zhang, Xu [2 ]
机构：
[1] Tyndall Natl Inst, Int Energy Res Ctr, Cork, Ireland
[2] Tongji Univ, Sch Mech Engn, Shanghai, Peoples R China
来源：
BUILDING RESEARCH AND INFORMATION | 2019年 / 47卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Radiant system; thermal characteristics; heat flux; surface temperature; operation limit region; COOLING CAPACITY; DISPLACEMENT VENTILATION; THERMAL COMFORT; PERFORMANCE; PANEL; CONDENSATION; HUMIDITY; ENVIRONMENT; CONVECTION; PREDICTION;
D O I：
10.1080/09613218.2019.1617668
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Insufficient knowledge about characteristics of radiant systems has caused problems in the wider application of the radiant system, such as water condensation, bad thermal comfort, etc. In this study, key characteristics of a radiant system in terms of an inherent relationship between total heat flux and surface temperature were analysed. General models for describing such the relationship were developed and validated by elaborate experimental data. Operation limit region of the radiant system was identified and proposed by plotting key parameters in one surface, including supply water temperature, operative temperature panel surface temperature as well as total heat flux density. It was found that not all of the points within the operation limit region were suitable for practical application in order to avoid water condensation risk in cooling mode and large temperature differences in a vertical direction in heating mode. Evolved forms of operation limit regions for cooling and heating applications were put forward and their characteristics were addressed. The results reported in this paper could help manufacturers as well as engineers to better design, configure and regulate radiant systems for better product development and improved indoor thermal comfort.
引用
收藏
页码：912 / 927
页数：16
相关论文
共 42 条
[31]  
Olesen BW, 2002, ASHRAE J, V44, P19
[32]   An experimental study of air flow and temperature distribution in a room with displacement ventilation and a chilled ceiling [J].
Rees, Simon J. ;
Haves, Philip .
BUILDING AND ENVIRONMENT, 2013, 59 :358-368
[33]   Research on Suitable Application Sites of Radiant Cooling System [J].
Shou, Q. ;
He, J. .
2011 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN ENERGY ENGINEERING (ICAEE), 2012, 14 :1002-1007
[34]   Performance evaluation of a radiant floor cooling system integrated with dehumidified ventilation [J].
Song, Doosam ;
Kim, Taeyeon ;
Song, Suwon ;
Hwang, Suckho ;
Leigh, Seung-Bok .
APPLIED THERMAL ENGINEERING, 2008, 28 (11-12) :1299-1311
[35]   Theoretical and experimental study of condensation rates on radiant cooling surfaces in humid air [J].
Tang, Haida ;
Liu, Xiao-Hua ;
Jiang, Yi .
BUILDING AND ENVIRONMENT, 2016, 97 :1-10
[36]   Experimental study of dew formation on metal radiant panels [J].
Tang, Haida ;
Liu, Xiao-Hua .
ENERGY AND BUILDINGS, 2014, 85 :515-523
[37]   Numerical prediction of thermal comfort and condensation risk in a ventilated office, equipped with a cooling ceiling [J].
Teodosiu, Catalin ;
Ilie, Viorel ;
Teodosiu, Raluca .
EENVIRO-YRC 2015 - BUCHAREST, 2016, 85 :550-558
[38]   An optimized RC-network for thermally activated building components [J].
Weber, T ;
Jóhannesson, G .
BUILDING AND ENVIRONMENT, 2005, 40 (01) :1-14
[39]   Experimental investigation on the heat transfer performance and water condensation phenomenon of radiant cooling panels [J].
Yin, Y. L. ;
Wang, R. Z. ;
Zhai, X. Q. ;
Ishugah, T. F. .
BUILDING AND ENVIRONMENT, 2014, 71 :15-23
[40]   An experiment-oriented simulation method for cooling capacity determination of cooling ceiling radiant panel system [J].
Yuan, Yongli ;
Zhang, Xu ;
Zhou, Xiang ;
Gao, Jun .
SCIENCE AND TECHNOLOGY FOR THE BUILT ENVIRONMENT, 2016, 22 (06) :831-844
12345