Wednesday August 28, 2019 from 12:00 to 13:30

Room: 517cd - Exhibit Hall

POS-50 Permeability of PTFE flat-type membrane for absorption chiller

Jiacheng He, Japan

Department of Human and Engineered Environmnental Studies, Graduate School of Frontier Sciences
The University of Tokyo


Permeability of PTFE flat-type membrane for absorption chiller

JIACHENG HE1, Chaobin Dang Dr.1, Eiji Hihara Dr.1.

1The University of Tokyo, Kashiwa, Japan

Applying the hydrophobic membrane into the absorber and generator of the absorption chiller can significantly downsize the absorption system. In this study, the permeability of the hydrophobic membrane is evaluated using CO2 prior to the system test. The PTFE flat-type membrane with three nominal pope sizes of 0.1, 0.45 and 1 micron were tested for both flow directions. Results show that the permeability decreases with imposed pressure when the pressure is relatively small, and then tends to be constant. The mass transport mechanism differs for the membrane samples, and higher permeability was obtained with larger pore sizes. The variation of the permeability can be qualitatively explained with the pore size distribution.

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