不同干燥剂转轮的除湿性能

Experimental investigation on the performances of different desiccant wheels

以除湿量和除湿性能系数作为评价指标,对3个不同干燥剂转轮的除湿性能进行了实验研究。对比分析了处理空气入口温度和相对湿度、处理风速、再生风速、转轮转速以及再生温度对各个转轮的影响,得到了转轮的除湿量和除湿性能系数的变化趋势。结果表明:在处理侧温度较高的情况下,聚苯硫醚(PPS)/PPM各半转轮相比PPS硅胶转轮和PPM分子筛转轮,除湿性能是最好的;PPS硅胶转轮更适用于高湿度工况环境;而处理风速的增大有利于提高PPM分子筛转轮的性能;再生温度从60℃提高到80℃,3个转轮的除湿量和除湿性能系数增大1倍左右。

Dehumidification capacity and dehumidification coefficient of performance are employed to evaluate the performances of desiccant wheels in this paper by experimental comparison of distribution of operating parameters,such as process air inlet temperature and relative humidity,process air speed,regeneration air speed,and regeneration air inlet temperature. The results showed that at high inlet temperature of process air,dehumidification performance of PPS/PPM 50% wheel was the best compared with PPS silica gel wheel and PPM molecular sieve wheel;PPS silica gel wheel was more suitable for environmental conditions of relatively high humidity;the increase of process air flow rate was helpful to improve the performance of PPM molecular sieve wheel;when regeneration temperature increased from 60℃ to 80℃,dehumidification coefficient of performance and dehumidification capacity of three desiccant wheels almost doubled.