TY - JOUR
T1 - Adsorption characteristics of AQSOA zeolites and water for adsorption chillers
AU - Kayal, Sibnath
AU - Baichuan, Sun
AU - Saha, Bidyut Baran
N1 - Funding Information:
Some of the authors acknowledge the financial support from National Research Foundation , Singapore (Grant number NRF-CRP8-2011-3 ). The authors would also like to express their sincere thanks to Dr. Anutosh Chakraborty of the School of Mechanical and Aerospace Engineering, Nanyang Technological University for his suggestion and contribution.
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - In this article, the authors presented the characterization and property evaluation of AQSOA zeolites by various experimental methods including X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), N2 adsorption/desorption isotherms and thermo gravimetric analysis (TGA). The amount of H2O uptakes on AQSOA-Z01 and AQSOA-Z02 were measured for the temperatures of 298 K, 313 K and 338 K. It was found that the water vapor adsorption isotherm of AQSOA-Z01 was characterized by S-shape with hydrophobic behavior at the beginning of adsorption or low pressures. The enthalpies of adsorption (Qst) for AQSOA zeolites + water were calculated employing Clausius Clapeyron relations via experimentally measured adsorption isotherms data. The Qst derived from various adsorption isotherm models were also added for comparison purposes. It was found that the porous structure of AQSOA-Z01 exhibits a high H2O vapor uptakes and delivered 0.1 kg of water per kg of zeolite for one adsorption-desorption cycle even at the desorption temperature of 65 °C.
AB - In this article, the authors presented the characterization and property evaluation of AQSOA zeolites by various experimental methods including X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), N2 adsorption/desorption isotherms and thermo gravimetric analysis (TGA). The amount of H2O uptakes on AQSOA-Z01 and AQSOA-Z02 were measured for the temperatures of 298 K, 313 K and 338 K. It was found that the water vapor adsorption isotherm of AQSOA-Z01 was characterized by S-shape with hydrophobic behavior at the beginning of adsorption or low pressures. The enthalpies of adsorption (Qst) for AQSOA zeolites + water were calculated employing Clausius Clapeyron relations via experimentally measured adsorption isotherms data. The Qst derived from various adsorption isotherm models were also added for comparison purposes. It was found that the porous structure of AQSOA-Z01 exhibits a high H2O vapor uptakes and delivered 0.1 kg of water per kg of zeolite for one adsorption-desorption cycle even at the desorption temperature of 65 °C.
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U2 - 10.1016/j.ijheatmasstransfer.2015.09.060
DO - 10.1016/j.ijheatmasstransfer.2015.09.060
M3 - Article
AN - SCOPUS:84943785907
SN - 0017-9310
VL - 92
SP - 1120
EP - 1127
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -