Experimental Investigation of Granular Activated Carbon/R-134a Pair for Adsorption Cooling System Applications

• 作者: M. Attalla S. Sadek
• 来源期刊: 电力能源(英文)
• 学科: 化学
• 关键词: ADSORPTION ACTIVATED CARBON R-134A Isosteric Heat
• 年，卷（期）: 2014,（2）
• 页码范围: 11-20
• 页数: 10页
• 分类号: O6

摘要

The objective of this study is to investigate the adsorption characteristics of granular activated carbon GAC/R-134a pair in the temperature range of 20℃?- 60℃?and pressure up to 10 bars. The Dubinin-Astakhov adsorption equilibrium model is fit to experimental data with acceptable error limit. The pressure-temperature-concentration (P-T-X) diagram of the pair is also presented. The isosteric heat of adsorption of R-134a on activated carbon has been calculated using the Clausius-Clapeyron equation as a function of adsorption capacity. The maximum adsorption capacity was found to be 1.92 kgR134a/kg carbon at 20℃?after 1200 s. The experimental results also show that the increase of heat transfer area improves the adsorption capacity per kg of adsorber, which leads to the design of a finned tubes heat exchanger adsorption unit.