大空间建筑冬季热回收利用的节能分析

Energy Saving Potential Analysis of Heat Recovery in Large Space Building in Winter

大空间建筑冬季易出现垂直温度分层现象,根据这一特点,提出将上部空间热空气直接抽送至人员活动区的热回收方案,建立上下区域的温度差与热回收风量之间的权衡关系,获得了该方案下的理论最优热回收风量区间。并通过典型铁路客站公共区域的模拟计算,表明了实际最优热回收风量是在理论最优热回收风量区间内,得到了其热回收的节能潜力。

The vertical temperature stratification is found in public area of large space building in winter.According to this characteristic,the heat recovery scheme is that pumps directly the upper space of hot air to the personnel activity area.The relationship between the temperature difference and the ventilation rate of heat recovery is determined,and the optimal range of heat recovery parameters is obtained.Adopting simulation calculation of the typical railway station model,it is proved that the actual optimum air volume of heat recovery is in range of the theoretical optimum air volume,and the energy saving potential of heat recovery is received.