低温热源驱动固体除湿换热器除湿特性实验研究

Experimental Study on Dehumidification Characteristics of Solid Desiccant Heat Exchanger Driven by Low Temperature Heat Source

本文针对50-70℃热源温度,以板翅式换热器为基体制作了一种交叉流固体涂层除湿换热器,并对该除湿换热器器进行了实验研究。实验分别在不同再生温度、不同送风含湿量工况下进行,分析不同运行工况对除湿换热器除湿性能的影响。实验表明,在给定工况下,增加再生温度和处理空气进口含湿量可以提升除湿换热器的除湿性能。当再生温度50℃升高到70℃使时,最大瞬时除湿量可提高37.3%,当入口含湿量从15.6g/kg提升到21.1g/kg时,最大瞬时除湿量提高了将近147.5%。

In this paper, a cross flow type solid desiccant coated heat exchanger based on plate fin heat exchanger was fabricated for 50-70 ℃ heat source temperature, and the desiccant coated heat exchanger was experimentally studied. Experiments were carried out under different regeneration temperatures and different supply air moisture content conditions, which to analyze the influence of different operating conditions on the dehumidification performance of desiccant coated heat exchanger. The experimental results show that the dehumidification performance of the desiccant coated heat exchanger can be improved by increasing the regeneration temperature and the inlet moisture content of the process air. When the regeneration temperature increased from 50℃ to 70℃, the maximum instantaneous dehumidification increased by 37.3%. When the inlet moisture content increased from 15.6 g/kg to 21.1 g/kg, the maximum instantaneous dehumidification increased by 147.5%.