Effect of desiccant adsorption isotherm on dehumidification performance of desiccant coated heat exchanger

被引：0
|
作者：
Yang T. [1 ]
Ge T. [1 ]
机构：
[1] Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai
来源：
Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 12期
关键词：
Air conditioning;
D O I：
10.11949/0438-1157.20221248
中图分类号：
学科分类号：
摘要：
Compared with the traditional air compression air conditioning system, the adsorption dehumidification air conditioning system based on desiccant coated heat exchanger uses solid desiccant to deal with the latent heat load in the air, which effectively improves the evaporation temperature and greatly improves the energy efficiency of the air conditioning system. The choice of desiccant coating is very important to the performance of desiccant coated heat exchanger system. It is difficult to effectively select desiccant materials suitable for dehumidification heat exchanger system by using existing experimental and simulation methods. Based on the adsorption isotherm of desiccant, the applicability of desiccant material for dehumidification heat exchanger is discussed in this paper. Starting from the adsorption isotherm curve of desiccant，this paper discusses the dehumidification performance of desiccant with different types of adsorption isotherm curves firstly，and concludes that the desiccant with“S”type adsorption isotherm curve has the best dehumidification ability. The step pressure of“S”type adsorption isotherm is also analyzed and discussed, and the calculation method of the optimal step pressure under specific working conditions is determined. The above conclusions are consistent with the simulation results. The feasibility of obtaining desiccant with ideal adsorption isotherm by compounding hygroscopic salts and synthesizing materials with specific pore structure was also discussed. © 2022 Chemical Industry Press. All rights reserved.
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页码：5367 / 5375
页数：8
相关论文
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