Abstract
Absorption characteristics of water vapor into a LiBr aqueous solution falling down along a cooled vertical wall have been investigated experimentally. Metal foam is attached to the cooled wall, and a hydrophobic membrane covers the metal foam surface to prevent the solution splashing. In the case without membrane the mass flux of vapor absorption increases with increasing the solution flow rate or lowering the inlet solution temperature. The mass transfer coefficient for the case with membrane was less by approximately 50% than that without membrane.
