Thermodynamic formalism of water uptakes on solid porous adsorbents for adsorption cooling applications

被引:82
作者
Sun, Baichuan [1 ]
Chakraborty, Anutosh [1 ]
机构
[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
基金
新加坡国家研究基金会;
关键词
MICROPORES; SYSTEMS; REGION;
D O I
10.1063/1.4876922
中图分类号
O59 [应用物理学];
学科分类号
摘要
This Letter presents a thermodynamic formulation to calculate the amount of water vapor uptakes on various adsorbents such as zeolites, metal organic frameworks, and silica gel for the development of an advanced adsorption chiller. This formalism is developed from the rigor of the partition distribution function of each water vapor adsorptive site on adsorbents and the condensation approximation of adsorptive water molecules and is validated with experimental data. An interesting and useful finding has been established that the proposed model is thermodynamically connected with the pore structures of adsorbent materials, and the water vapor uptake highly depends on the isosteric heat of adsorption at zero surface coverage and the adsorptive sites of the adsorbent materials. Employing the proposed model, the thermodynamic trends of water vapor uptakes on various adsorbents can be estimated. (C) 2014 AIP Publishing LLC.
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页数:4
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