Evaluation of cooling ceiling and mechanical ventilation systems on thermal comfort using CFD study in an office for subtropical region
Evaluation of cooling ceiling and mechanical ventilation systems on thermal comfort using CFD study in an office for subtropical region
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DOI：
10.1016/j.buildenv.2011.09.002
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发表时间：
2012-02-01
影响因子：
7.4
通讯作者：
Huang, Jian-Sheng
中科院分区：
文献类型：
--
作者：
Chiang, Wei-Hwa;Wang, Chia-Ying;Huang, Jian-Sheng
辐射冷却天花板系统已经被证明可以提供改善的热舒适环境。本工作进行了一个全面的实验在一个办公室，并计算流体动力学（CFD）模拟研究的辐射冷却天花板系统集成在这个测试空间安装的空气冷却设备。将实验结果与CFD模拟结果进行了比较，验证了模型的准确性。根据模拟结果，采用预测平均投票（PMV）指标对原有室内热状况和改善后的室内热状况进行评价。实验变量包括送风温度从扩散器，表面温度，和冷却面板的面积。此外，还对散流器在机械通风系统中的位置进行了分析，为辐射供冷顶板的设计提供了改进建议。本研究针对台湾亚热带地区使用辐射冷却天花板系统改善室内热舒适度及能源效率的局限性，提出解决方案。(C)2011爱思唯尔有限公司保留所有权利。
Radiant cooling ceiling systems have already been proven to potentially provide an improved thermal comfort environment. This work conducted a full-scale experiment in an office, and a computational fluid dynamics (CFD) simulation study for a radiant cooling ceiling system integrated with air dehumidification equipment installed in this test space. The obtained results from the experiment were compared with the values from the CFD simulation to validate the accuracy of the model. Predicted mean vote (PMV) index was used to assess the original indoor thermal condition and improved conditions according to the simulation results. Experimental variables included supply air temperature from the diffuser, surface temperature, and the area of the cooling panels. In addition, diffuser position in the mechanical ventilation system was analyzed that provided suggestions on improving the design of radiant cooling ceiling panels. This study proposed solutions alongside limitations on improving indoor thermal comfort and energy efficiency using a radiant cooling ceiling system in the subtropical regions of Taiwan. (C) 2011 Elsevier Ltd. All rights reserved.