文档介绍：全热交换器所采用的吸附材料与空气污染物质发生交叉污染之相关性研究
金沢大学児玉昭雄西部技研岡野浩志金伟力
Abstract Enthalpy exchangers have been widely used for fortable air-conditioning with lower energy consumption. ant materials such as silica gel and molecular sieves are used so as to give it a latent heat exchanging function. However, this important function has e the cause of cross-contamination because the substances with an offensive odor are also adsorbed in the ant. In this paper, cross-contamination of an enthalpy wheel consisting of ion-exchange resin particles as a ant material is examined and the results pared with those of mercialized 3A zeolite wheel. It is found that the Ion-exchange resin type wheel showed smaller cross-contamination ratio than that of the other for all the contaminants tested in this study, ammonia, carbon dioxide, formaldehyde and propane.
关键词全热转轮新风换气节能热回收交叉污染
0 引言
通风换气是保持室内空气质量的一种非常有效的手段。然而对于使用空调的房间,导入新风必然会使空调负荷增加,通风换气与空调节能成为一对矛盾。近年,作为抑制因导入新风而引起的空调负荷上升的节能设备,显热交换器及全热交换器被逐渐应用在空调新风换气系统。显热交换器,顾名思义,只能对排风空气的显热热能进行回收。而全热交换器则不仅能回收排风空气中的显热,而且可以回收其潜热。后者具有更大的节能效果。以日本为例,1990年以来,仅用在商业、公共建筑方面的全热交换器,每年都在10万台以上[1]。全热交换器按其构造可以分为旋转型(转轮式)和静止型(板式与板翅式)两大类。对于旋转型而言,其核心设备是由涂层了吸附材料的铝箔加工而成的转轮()。而静止型则是由难燃或不燃性、传热传质性能良好的透湿膜、透湿纸,经加工成波纹状并与平板状交叉叠置而成。然而,由于转轮旋转、加之吸附材料对于室内发生的有害、有味气体同样具有吸附作用,当遇到室外空气条件突变(如连雨天)等情况,有时会发生污染物质交叉污染(新风空气有异味发生)的现象[2]。同样,静止型全热交换器也会因为透湿材料经年劣化、或是有害有味气体在透湿材料中的蓄积而发生交叉污染现象。因此,既要发挥全热交换器的节能作用,又要防止因室内