地铁车站弱电设备间设备发热量确定方法
Method for determining equipment heat dissipation in weakcurrent equipment rooms of subway stations
摘要：
介绍了一种地铁车站弱电设备间设备发热量确定新方法,该方法利用弱电设备发热量实测数据与模型预测数据相互验证,可以有效提高弱电设备发热量确定结果的准确性。研究了室内气温、地铁是否运营、设备额定功率和车站类型等因素对设备发热量的影响。研究结果表明：基于间接测量和预测模型的地铁车站弱电设备间设备发热量确定方法可以提高和保障设备发热量计算结果的准确性;室内气温会显著影响设备外表面和围护结构内表面温度及围护结构内表面热流密度,但对设备外表面热流密度的影响较小;地铁是否运营对弱电设备间设备发热量有较大影响,地铁运营期间设备发热量大于非运营期间;设备额定功率对弱电设备间设备发热量峰值有较大影响,车站类型和建筑面积对设备发热量峰值的影响很小。
Abstract：
A new method for determining the equipment heat dissipation in weak current equipment rooms of subway stations is presented. This method uses the measured data of the heat dissipation of the weak current equipment and the model prediction data to verify each other, which can effectively improve the accuracy of determining the heat dissipation of the weak current equipment. The effects of indoor air temperature, subway operation, equipment rated power and station type on the equipment heat dissipation are studied. The results show that the method for determining the equipment heat dissipation in weak current equipment rooms of subway stations based on the indirect measurement and the prediction model can improve and ensure the accuracy of the calculation results of equipment heat dissipation. The indoor air temperature will significantly affect the temperatures of the external surface of the equipment and the inner surface of the building envelope and the heat flux density of the inner surface of the building envelope, but has little effect on the outer surface heat flux density of the equipment. Whether the subway operates or not has a great influence on the equipment heat dissipation in weak current equipment rooms. The equipment heat dissipation during the subway operation period is greater than that during the non-operation period. The rated power of the equipment has a great influence on the peak heat dissipation of the equipment in weak current equipment rooms, and the station type and building area have little influence on the peak heat dissipation of the equipment.
Keywords:subway station; weak current equipment room; air conditioning load; equipment heat dissipation; influencing factor