Abstract
Personal Comfort System (PCS) has great potential to be applied in the high-speed train air conditioning system to meet the higher and personalized demand for thermal comfort. To evaluate its performances when used in a confined sleeping environment, such as the berth space in the train, a radiation-based PCS (R-PCS) system comprising a capillary radiation panel has been developed, and its thermal comfort performance experimentally evaluated. The effects of water supply temperature and flow rate of the capillary radiation panel, and the temperature outside the berth on the mean radiation temperature (MRT) in the sleeping space have been examined. The predicted mean vote (PMV) and the predicted percentage dissatisfied (PPD) are adopted to evaluate the subjects’ thermal comfort. The study results have shown that the use of the R-PCS in a confined sleeping environment could provide good thermal comfort with a lower water supply temperature than that of conventional hydronic/air convective system, and present great potential for energy saving in HVAC system of the train.
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