Adsorption isotherms and kinetics of activated carbon/Difluoroethane adsorption pair: Theory and experiments

被引：46
作者：
Ghazy, Mohamed [1 ]
Harby, K. [2 ]
Askalany, Ahmed A. [1 ]
Saha, Bidyut B. [3 ,4 ]
机构：
[1] Sohag Univ, Fac Ind Educ, Dept Mech Engn, Sohag 82524, Egypt
[2] Menia Univ, Fac Engn, Mech Power Engn & Energy Dept, Al Minya 61517, Egypt
[3] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, 6-1 Kasuga Koen, Kasuga, Fukuoka 8168580, Japan
[4] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Kasuga, Fukuoka, Japan
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2016年 / 70卷
关键词：
Activated carbon; Adsorption; Adsorption isotherms; Adsorption kinetics; Difluoroethane; EXPERIMENTAL-DESIGN; COOLING SYSTEMS; CARBON; OPTIMIZATION; HEAT; REFRIGERATION; METHODOLOGY; REMOVAL; ETHANOL; DRIVEN;
D O I：
10.1016/j.ijrefrig.2016.01.012
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This study introduces a new adsorbent/refrigerant pair to be used in adsorption cooling applications. Adsorption isotherms and kinetics of Difluoroethane (HFC-152a) onto highly porous activated carbon Maxsorb III at temperatures ranging from 25 to 75C have been investigated. Experimental data of adsorption uptake have been fitted with Dubinin-Astakhov (D-A) and Toth equations. D-A equation is found to be more suitable than Toth equation for fitting the adsorption uptake. Experimental results showed that Maxsorb III can adsorb up to 1.3 kg of HFC-152a per kg of adsorbent. Experimental data of adsorption kinetics have been fitted with linear driving force (LDF) and Fickian diffusion (FD) models. Both LDF and FD models are found to be able to simulate the adsorption kinetics of the proposed pair. Isosteric heat of adsorption has been estimated considering the real gas case. Pressure-temperature- concentration (P-T-C) diagram of the pair has been also presented. (C) 2016 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：196 / 205
页数：10
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