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

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DOI: 10.4236/jpee.2014.22002    5,934 Downloads   8,703 Views   Citations
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ABSTRACT

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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Attalla, M. and Sadek, S. (2014) Experimental Investigation of Granular Activated Carbon/R-134a Pair for Adsorption Cooling System Applications. Journal of Power and Energy Engineering, 2, 11-20. doi: 10.4236/jpee.2014.22002.

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