转轮除湿性能影响因素分析

Analysis of factors influencing the performance of rotary desiccant dehumidifier

为研究除湿转轮的除湿性能,对其一个微通道建立二维、双扩散模型,模拟计算处理空气和再生空气入口参数对处理空气出口温度和含湿量的影响,得到各入口参数对出口空气温度和含湿量的影响曲线。结果表明:出口空气温度随着处理空气入口温度和相对湿度、再生空气入口温度和再生风量的提高而增大:出口空气含湿量随着再生风量、再生空气入口温度的提高而减小。将模拟结果与实验结果进行比较,发现二者趋势相同,温度的最大误差为7.5%,含湿量的最大误差为11.1%。这为除湿转轮的优化运行提供了参考。

The mathematical model of a micro channel based on the two-dimensional and double diffusion heat and mass transfer equation is established, in order to study the performance of rotary desiccant dehumidifier. According to this model, the effects of inlet parameters of process and regeneration air on process air outlet temperature and humidity ratio are simulated. The influence curves of parameters are achieved by simulation. The results shows that process air outlet temperature improve when process air inlet temperature and relative humidity, regeneration air inlet temperature, and regeneration air capacity increase, and that process air outlet humidity ratio reduce when regeneration air capacity and regeneration air inlet temperature increase. Comparing the simulation results with experimental data, the results show that variation trends are similar, while the maximum error of the temperature is 7.5 %, and the maximum error of the humidity ratio is about 11.1%. This provides reference for rotary dehumidification.