Removal of Suspended Particulate Matters and Gaseous ChemicalSubstances with Humidity Swing Method

研究了变湿法净化空气的效果。在该方法中，通过空气的热湿和除湿过程从空气中去除纳米到微米尺寸的悬浮颗粒物(SPM)和气态化学物质。对空气净化效果和所需电能进行了实验研究。采用板翅式换热器，在绝对湿度摆动为0.2 kg/kg的条件下，在3 L/min的低风量下，SPM的脱除效果可达80%左右。对于化学物质的去除效果，在670ppm的进水条件下，氨氮的去除效果可达55%左右。还证明了引入热泵系统后，电功率可降至1/8。

The air cleaning effect with humidity swing method was studied. In the method, the suspended particulate matters (SPM) of nano- to micrometer size and the gaseous chemical substances are removed from the air through a thermal humidification and dehumidification process of the air. The air cleaning effect and required electric energy were experimentally studied. The SPM removal effect of about 80 % was shown in the experiment under low air flow rate of 3 L/min with plate fin type heat exchangers at absolute humidity swing of 0.2 kg/kg. For the chemical substances removal effect, it was shown that about55 % of ammonia can be removed under inlet condition of 670 ppm. It was also demonstratedthat the electric power can be reduced to 1/8 with introducing a heat pump system.