Simulation Study of Thermal Comfort in Station Waiting Hall with Different Air Supply Method
|School||Huazhong University of Science and Technology|
|Course||Heating,Gas Supply, Ventilation and Air Conditioning Engineering|
|Keywords||Railway station Supply program CFD simulation Human comfort|
As the important public buildings in modern city, the appearance design of railway station is more and more creative, but the problems in the air conditioning design which caused by the complex appearance has not attracted enough attention. At the same time, with the continuous development of CFD technology, this simulation technology is increasingly being used in studies of human comfort, including micro-climate environment and indoor air quality simulation analysis.This research was based on the subject commissioned by the building designer, "Large Space Thermal Environment Simulation In Hangzhou New East Railway Station Waiting Room " project. Two air-conditioning system design proposals which proposed by the building designer, the door air supply program and the seat air supply program, were simulated by CFD software. The human comfort was analyzed, including micro-climate indexes and human thermal comfort index PMV / PPD. The indoor air quality was also simulated, including the concentration of the major pollutant carbon dioxide and the mean air age index. Finally an optimization result was got by comparing the two programs.The results show that, by considering of human comfort, the air distribution design of Hangzhou New East Railway Station should give priority to seat air supply program. This program has the advantage of temperature control, PMV / PPD index control, indoor air quality control associated with the CO2 concentration and mean air age. But this program also has the disadvantage of too large local vertical temperature gradient, indoor air speed uncontrolled. The testing was needed in the further operation, the best control effect of human comfort could be achieved by changing the seat nozzle position and the air supply parameters.