[1] Gao Zhihong, Liu Xiaohua, Jiang Yi,. Cooling performance analysis of radiant panel at different positions [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 364-367. [doi:10.3969/j.issn.1003-7985.2010.02.049]
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Cooling performance analysis of radiant panel at different positions(
)
不同位置辐射板的供冷性能分析
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 26
- Issue:
- 2010 2
- Page:
- 364-367
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2010-06-30
Info
- Title:
- Cooling performance analysis of radiant panel at different positions
- 不同位置辐射板的供冷性能分析
- Author(s):
- Gao Zhihong; Liu Xiaohua; Jiang Yi
- School of Architecture, Tsinghua University, Beijing 100084, China
- Keywords:
- radiant panel; panel position; cooling capacity
- PACS:
- TU831
- DOI:
- 10.3969/j.issn.1003-7985.2010.02.049
- Abstract:
- The influence of the panel position on the cooling performance of a radiant panel is analyzed.The coupled simulation of convection and radiation is set up by a computational fluid dynamics(CFD)method.The simulations with different panel positions and different indoor heat sources are used to calculate the cooling capacity of the radiant panel and the indoor thermal environment.The simulation results are in good agreement with the experimental results.The results show that when the indoor heat source temperature is low, the convective heat flux is the main influence factor of the cooling capacity and the radiant panel should be placed on the wall or on the ceiling.Otherwise, when the indoor heat source temperature is high, the radiation heat flux is the main factor and the radiant panel should be placed as near to the heat sources as possible.
- 分析了辐射板布置位置对供冷性能的影响, 建立了一种对流与辐射耦合的CFD模拟模型.通过模拟计算, 得到不同辐射板位置和室内热源状况下辐射板供冷能力及室内热环境的分布状况;该模拟结果与真实平台实验结果基本吻合.模拟结果表明:当室内热源温度较低时, 对流换热量为主导因素, 因此应将辐射板放置于侧墙或天花板处;当室内热源温度较高时, 辐射板与热源的辐射换热量增大, 辐射换热量为主导因素, 因此应将辐射板布置在靠近高温热源的位置.
References:
[1] Bean R, Olesen W, Kim W.History of radiant heating and cooling systems [J].ASHRAE Journal, 2010, 52(2): 50-55.
[2] Imanari T, Omori T, Bogaki K.Thermal comfort and energy consumption of the radiant ceiling panel system: comparison with the conventional all-air system [J].Energy and Buildings, 1999, 30(2): 167-175.
[3] Kim T, Kato S, Murakami S, et al.Study on indoor thermal environment of office space controlled by radiant panel system using field measurement and numerical simulation [J].Building and Environment, 2005, 40(3): 301-310.
[4] Kim T, Kato S, Murakami S.Indoor cooling/heating load analysis based on coupled simulation of convection, radiation and HVAC control [J].Building and Environment, 2001, 36(7): 901-908.
[5] Wang S, Morimoto M, Soeda H, et al.Evaluating the low exergy of chilled water in a radiant cooling system [J].Energy and Buildings, 2008, 40(10): 1856-1865.
Memo
- Memo:
-
Biographies: Gao Zhihong(1984—), female, graduate;Jiang Yi(corresponding author), male, doctor, professor, jiangyi@tsinghua.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.50778094).
Citation: Gao Zhihong, Liu Xiaohua, Jiang Yi.Cooling performance analysis of radiant panel at different positions[J].Journal of Southeast University(English Edition), 2010, 26(2):364-357.