TY - JOUR
T1 - Experimental investigation on activated carbon-ethanol pair for solar powered adsorption cooling applications
AU - El-Sharkawy, I. I.
AU - Saha, B. B.
AU - Koyama, S.
AU - He, J.
AU - Ng, K. C.
AU - Yap, C.
N1 - Funding Information:
The authors acknowledge the financial support by the Ministry of Education, Science, Sports and Culture (MEXT), Japan, “Science and Technology Project”, Project No. 18560205.
PY - 2008/12
Y1 - 2008/12
N2 - Adsorption equilibrium uptake of ethanol onto a highly porous activated carbon based adsorbent, namely Maxsorb III, has been experimentally investigated using a thermo-gravimetric analyzer (TGA) unit over adsorption temperatures ranging from 20 to 60 °C. The Dubinin-Astakhov (D-A) equation has been used to correlate the experimental data. Isosteric heat of adsorption is also estimated by using the Clausius-Clapeyron equation. Employing a thermodynamically equilibrium model, the performance of the ideal adsorption cooling cycle has also been studied and compared to that of activated carbon fiber (ACF)-ethanol pair. Experimental results show that Maxsorb III can adsorb up to 1.2 kg of ethanol per kilogram of adsorbent. Theoretical calculations show that, the Maxsorb III-ethanol adsorption cycle can achieve a specific cooling effect of about 420 kJ kg-1 at an evaporator temperature of 7 °C along with a heat source of temperature 80 °C and thus the pair is recommended for solar cooling applications.
AB - Adsorption equilibrium uptake of ethanol onto a highly porous activated carbon based adsorbent, namely Maxsorb III, has been experimentally investigated using a thermo-gravimetric analyzer (TGA) unit over adsorption temperatures ranging from 20 to 60 °C. The Dubinin-Astakhov (D-A) equation has been used to correlate the experimental data. Isosteric heat of adsorption is also estimated by using the Clausius-Clapeyron equation. Employing a thermodynamically equilibrium model, the performance of the ideal adsorption cooling cycle has also been studied and compared to that of activated carbon fiber (ACF)-ethanol pair. Experimental results show that Maxsorb III can adsorb up to 1.2 kg of ethanol per kilogram of adsorbent. Theoretical calculations show that, the Maxsorb III-ethanol adsorption cycle can achieve a specific cooling effect of about 420 kJ kg-1 at an evaporator temperature of 7 °C along with a heat source of temperature 80 °C and thus the pair is recommended for solar cooling applications.
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U2 - 10.1016/j.ijrefrig.2008.03.012
DO - 10.1016/j.ijrefrig.2008.03.012
M3 - Article
AN - SCOPUS:55249101012
SN - 0140-7007
VL - 31
SP - 1407
EP - 1413
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
IS - 8
ER -