LoginEnvironmental control of basement by heating and dehumidifying the air is widely used in summer. In general, ventilation can make the air more humid. From the point of view of energy saving, it is suggested to exchange humidity and to insulate heat between stale air and fresh air during ventilating basement. To improve the efficient of the exchanging system, the characteristics of heat and mass transfer of membrane device are studied. It is presented that the membrane device exchange system not only can keep the heat but also can remove moisture of the fresh air. It is studied that theoretically the mechanism and performance of the dehumidifier with a porous plastic film as a key element by bi-directional ventilation, its characteristic curves are worked out. The dehumidifier element developed with domestic techniques currently available and relevant relationship curves of dehumidifying rate and air temperature with air velocity are described, and calculation formulas obtained from measurement are derived. Dehumidification mechanism of membrane of high polymer and related advancements in research are presented. Their applications are anticipated.
Dehumidification with membrane by ventilation in basement.
Year:
2001
Bibliographic info:
Hong Kong, City University, Division of Building Science and Technology, 2001, proceedings of IAQVEC 2001, "Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Fourth International Conference", held Changsha, Hunan, China, 2-5 October, 2