Advanced thin zeolite/metal flat sheet membrane for energy efficient air dehumidification and conditioning

Water vapor permeation and dehumidification performance of poly(vinyl alcohol)/lithium chloride composite membranes

“…When the humid air stream passes along the membrane, the water vapor is selectively and efficiently sieved out. As a result, the air becomes dried without any change in its temperature [11][12][13]15].…”

“…Most of the membranes thus far have been constructed in a composite structure comprising support layers and an active layer [6,13,14,16]. The support layers provide the high mechanical strength and eventual chemical stability to the membrane.…”

“…Thus far, hydrophilic polymer [1][2][3]6,8,12,[17][18][19], ceramic materials [13] and liquid membranes [14,16,[20][21][22] have been widely used for membrane active layer. Among them, hydrophilic polymer has attracted much attention due to its high water permeability and selectivity [2,4,[6][7][8]12,[17][18][19][23][24][25][26].…”

“…Composite membranes have higher permeability and mechanical strength than single-layer membranes with the same thickness. Therefore, the development of inexpensive and high performance composite membranes has attracted much research interest in the field of isothermal air/gas dehumidification [1,6,[12][13][14]16].…”

“…Humid air or gas can be dried when it goes through the isothermal filtration setup [1,[11][12][13] as shown in Fig. 1.…”