新风预处理概念、系统与应用

Concept, system and application of the outdoor air pretreatment

美国《ASHRAE标准 62 - 1 999》要求增大空调系统的设计新风量 ,降低室内相对湿度以提高室内空气品质。这样 ,空调系统的冷、湿负荷将增大。据此 ,提出了新风预处理概念 ,它是在基本保持原有的传统空气处理系统不变的前提下 ,对新风进行合适的预处理 ,以消除增加的新风对空调对象的干扰 ,从而经济有效地改善室内空气品质。最后 ,给出了几种新风预处理系统及应用。

To improve the indoor air quality, the ASHRAE Standard 62-1999 prescribes that the outdoor air requirement should be increased and the indoor relative humidity should be lowered. Thus the huge additional cooling and humidity load will be put on the air conditioning system. Therefore presents the concept of outdoor air pretreatment. That is to pretreat the outdoor air appropriately to eliminate interference of additional outdoor air to air conditioning space on the condition of keeping the existing conventional air-conditioning system untouched. So the indoor air quality can be improved in the economic and effective way. In addition, puts forward several pretreatment systems of outdoor air and their applications.