净化空调系统利用二次回风的节能设计

Utilizing the Secondary Return Air for Energy Saving Design in Clean Air-Conditioning System

净化空调系统,存在送风量大、送风温差小的特点,并且各房间的热湿负荷相差较大。通过对一次回风与两种二次回风系统进行比较、计算,说明在夏季空气处理过程中利用二次回风,代替二次加热达到节能目的。并阐述设计过程中应注意的问题。

Clean air-conditioning system is of characteristic of large volume and little difference in temperature of air supply, and the difference of heat/moisture loads among rooms is large. Through calculating and comparing the primary return air and two types of secondary return air system, the conclusion is that in summer utilizing the secondary return air during air handling, instead of secondary heating, could result in energy saving. In addition, some problems need notice during design.