The dynamic effect of supply water flow regulation on surface temperature changes of radiant ceiling panel for cooling operation

被引：27

作者：

Jin, Wufeng ^{[1
]}

Jing, Jiajun ^{[1
]}

Jia, Lizhi ^{[2
]}

Wang, Zhiqiang ^{[1
]}

机构：

[1] Tianjin Univ Commerce, Tianjin Key Lab Refrigerat Technol, Tianjin, Peoples R China

[2] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China

来源：

SUSTAINABLE CITIES AND SOCIETY | 2020年 / 52卷

关键词：

Radiant ceiling panel; Surface temperature; Supply water flow regulation; Anti-condensation; THERMAL COMFORT; NUMERICAL-ANALYSIS; SYSTEMS;

D O I：

10.1016/j.scs.2019.101765

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Radiant ceiling cooling panels are limited in applications due to surface condensation. Surface temperature is a key factor affecting condensation problems, and supply water flow regulation is closely related to surface temperature fluctuation. In this paper, the dynamic change of surface temperature in regulating the supply water flow is investigated. It is found that when the chilled water supply is closed, the condensation on the radiant ceiling panel surface can be effectively prevented. Using simulation results and statistical analysis, the three main factors affecting the surface temperature for fixed supply water flow are determined as the average temperature of the non-cooling surface, the indoor air temperature, and the internal surface temperature of the outer window. The contribution rates of these factors are 47.6%, 39.2% and 10.1%, respectively. On the basis of this research, the dynamic changes of surface temperature of radiant ceilings for the closed water supply are simulated and verified, and the results are in agreement with the experimental results.

引用

页数：9

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