填料式饱和器稳态和动态特性的试验研究

对填料式饱和器进行了稳态及动态特性试验研究,分析了进水流量、进气流量、进水温度对空气加热加湿过程的影响,主要考察了出水温度、出气温度、进出口空气含湿量差、填料段压降和持液量等性能参数的变化规律.结果表明：在相同进水流量下,提高水气比和进水温度,可显著提高加热加湿性能;当气相速度升高时,进出口空气含湿量差减小,填料段压降及持液量升高;在动态工况下,当进口参数发生扰动时,持液量及出水温度比压降需要更长的时间才能达到新的稳定点.

Experimental Study on Steady and Dynamic Performance of a Packed Saturator

An experimental study has been carried out on the steady and dynamic performance of a packed saturator, so as to analyze how the water/air inlet flow and water inlet temperature influence the heating and moisturizing process, with focus on the variation law of the water outlet temperature, air outlet temperature, humidity difference between inlet and outlet air, pressure drop and liquid holdup in the packing section, etc. Results show that at the same flow of water inlet, the heating and moisturizing performance can be improved by raising the water-air ratio and water inlet temperature with the rise of air velocity, the humidity difference reduces, but the prssure drop and liquid holdup increase under dynamic conditions with a disturbance of inlet variables, both the liquid holdup and water outlet temperature take a longer time to reach a new stable state than that required by pressure drop.