变风量系统外区进深划分及对应风量特性

Depth Division of Perimeter Zone and Corresponding Air Volume Characteristics of VAV System

从办公建筑的分区特性及变风量系统的设计计算方法出发,以上海某办公建筑标准层为模型,分析了各朝向外区的空调一次风风量特性差异。通过设定不同的外区进深,进一步分析了各朝向外区的风量特性受外区进深划分的影响。研究结果表明:外区进深划分差异不会影响各朝向外区的逐时风量变化趋势及波峰出现的时间;当进深由3m-4m-5m不断增大过程中,外区单位面积的一次风最大风量逐渐降低,且降幅明显,一次风最小风量与最大风量的比值呈增大趋势,但整体趋势较缓。

Based on the zoning characteristics of office buildings and the design calculation method of variable air volume system, a standard office building floor model in Shanghai has been established and used to analyze the difference of air volume characteristics in different oriented perimeter zones. For each oriented perimeter zone, the influence of the perimeter zone depth on the air volume characteristics are also further analyzed. The results show that the variation of perimeter zone depth will not affect the trend of hourly air volume profile and the peak load time in each perimeter zone. Moreover, as the perimeter zone depth increasing from 3m to 5m, the maximum amount of primary air volume per unit area of the perimeter zone has decreased significantly, and the ratio of the minimum value to the maximum value of the primary air volume has slightly increased.