Influence of heat transfer and wetting angle on condensable fluid flow through nanoporous anodic alumina membranes.

ABSTRACT: The flow of isobutane and of freon 142b (1-chloro-1,1-difluoro-ethane) through anodic alumina membranes with pore diameters between 18 and 60 nm in a capillary condensation regime is experimentally and theoretically explored. The capillary condensation effect increases the membrane permeance for condensable gases from 25 to 150 m³(STP) m^-2 bar^-1 h^-1 at certain conditions. To describe the experimental results, a model is suggested accounting for heat transfer from the condensing to the evaporating meniscus, different boundary conditions for the heat transfer between the environment and the membrane, and wettability of the pore wall. The proposed model indicates a large influence of heat supply from the environment to the membrane on the permeance

SUBMITTER: Loimer T 

PROVIDER: S-EPMC9890497 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature