An experimental study on the performances of a radiation-based task/ambient air conditioning system applied to sleeping environments
An experimental study on the performances of a radiation-based task/ambient air conditioning system applied to sleeping environments
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DOI：
10.1016/j.enbuild.2017.01.038
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发表时间：
2017-03
影响因子：
6.7
通讯作者：
Jing Du;M. Chan;S. Deng
中科院分区：
文献类型：
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作者：
Jing Du;M. Chan;S. Deng
睡觉的人在一个相对较小的空间里自然是不动的。因此，任务\环境空气调节（TAC）可以最好地应用于睡眠环境，因为它在节能方面的性能得到了证实。然而，当使用先前开发的用于睡眠环境应用的TAC系统时，冷气流是一个严重的问题，并且由于占用区域内的高空气速度和低空气温度而难以避免。因此，在本文报道的实验研究中，基于辐射的TAC（R-TAC）系统已经开发，其性能进行了实验评估。本文首先介绍了R-TAC原型系统的实验装置、实验条件和实验方法。其次是介绍热舒适性和通风性能的实验结果。最后，冷凝风险的问题时，使用建议的R-TAC系统进行了讨论。研究结果表明，采用R-TAC系统不仅可以改善室内的热舒适性和通风效果，而且可以有效地解决室内的冷风问题。此外，表面上潜在冷凝的潜在问题可以通过提高面板表面温度或使用较低的新鲜空气供应湿度来解决。
A sleeping person is naturally immobile in a relatively small space. Hence, task\ambient air conditioning (TAC) can be best applied to a sleeping environment because of its proven performances in energy saving. However, when using previously developed the TAC systems for sleeping environment applications, cold draft was a serious issue and could hardly be avoided due to a high air velocity and a low air temperature inside an occupied zone. Therefore, in the experimental study reported in this paper, a radiation-based TAC (R-TAC) system has been developed, and its performances experimentally evaluated. In this paper, firstly, an experimental setup for a prototype R-TAC system, and experimental conditions and methods are reported. This is followed by presenting experimental results on the thermal comfort and ventilation performance. Finally, the issues of condensation risk when using the proposed R-TAC system are discussed. The study results presented in this paper have shown that the use of the R-TAC system could not only result in better thermal comfort and ventilation performances, but also effectively resolve the cold draft problem. In addition, the potential problem of potential condensation on a surface may be resolved by raising the panel surface temperature, or using a lower fresh air supply humidity.