Performance testing of a counter-cross-flow run-around membrane energy exchanger (RAMEE) system for HVAC applications

Study of solar regenerated membrane desiccant system to control humidity and decrease energy consumption in office spaces

“…To overcome the previous problems, researchers have recently implemented hydrophobic membranes to cool and dehumidify the air without direct contact with the desiccant [13][14][15][16][17][18][19][20]. The membranes used are permeable to water vapor but impermeable to liquid desiccant.…”

“…The membrane-desiccant systems have been used in two different configurations. The first configuration employs a membrane desiccant system that dehumidifies the supply air before entering the indoor space [15][16][17][18]. In this configuration (first), there are two compact energy exchangers, one for dehumidifying the air and the second for regenerating the liquid desiccant [15,18].…”

A review of heat recovery technology for passive ventilation applications

“…A number of attempts to improve the design of run-around systems have been conducted by focussing on the fixed plate heat exchangers used in the system. Using a membrane based core in the fixed plate heat exchangers, Mahmud et al (52) found that a total effectiveness of the system of 50-55% was achievable. Because a membrane fixed plate heat exchanger was used, both the heat and water vapour were transferred through the micro-porous layer.…”

The effect of the prismatic filler arrangement and cross-sectional shape on the thermal conductivity of polymer composites

“…Regretfully, metallic heat exchangers cannot operate at acid environments for extended periods of time, and the thermal shock shortens their operation life [4]. To solve this problem, plastics or polymers instead of metals have been used to make heat exchangers [5][6][7]. However, the thermal conductivity of polymers is very low, that makes the overall heat transfer coefficients of plastic heat exchangers very low.…”