地下商业房间空调室内设计温度取值问题探讨

Discussion on determination of air conditioning indoor design temperature in underground commercial rooms

通过DeST软件模拟与现场实测手段,针对不同气候区地下商业房间室内空气温度和平均辐射温度存在的差异,研究了地温对地下房间人体热舒适的影响。发现按现行标准规范确定地下商业房间的空调室内设计温度,不同气候区的人体热感觉PMV存在明显区别。建议按地温及被覆面积比(房间外围护结构面积与房间围护结构总面积之比)确定地下商业房间空调室内设计温度。根据热舒适度等级给出了不同气候区被覆面积比在0.21~0.79之间的地下商业房间冬夏季空调室内舒适温度值推荐范围。

According to the difference of indoor air temperature and average radiation temperature of underground commercial rooms in different climate areas,studies the effect of ground temperature on human thermal comfort in underground rooms by using DeST software simulation and field measurement.It is found that if the indoor air temperature of underground commercial rooms is designed according to the current standard,there are obvious differences in human thermal sensation PMV in different climate areas.Suggests that the indoor design temperature of air conditioning in underground commercial rooms should be determined according to the ground temperature and the covered area ratio(the ratio of the external enclosure area of the room to the total area of room enclosure).Provides the recommended temperature range of air conditioning room in winter and summer for underground commercial room with covered area ratio from 0.21to 0.79in different climate areas according to the thermal comfort level.