TITLE:
Experimental Investigation of Granular Activated Carbon/R-134a Pair for Adsorption Cooling System Applications
AUTHORS:
M. Attalla, S. Sadek
KEYWORDS:
Adsorption; Activated Carbon; R-134a; Isosteric Heat
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.2 No.2,
February
15,
2014
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.