<研究論文>乾燥空気の省エネルギー型リサイクル法の開発

概要

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We intended to develop a novel technique to change wet air into dry air under minimum energy loss without a decrease in its temperature. A small trial apparatus of 1/100 in size comparing with hypothetical paractcal size was designed in order to evaluate the removability of water in the wet air. After setting the regenerated cellulose hollow fiber module having the mean pore size of 10nm with 100cm^2 of effective filtration area, the wet air flowed through the hollow part and the dry air did above outer wall parts of hollow fibers. The transportation rate of water from the hollow parts to the outside of the fibers were observed under various flow rates of both airs and temperature. The wet air with RH≒100% could be changed into one with RH=60%. The removal rate of water was 6g/m^2・hr at 293K under the flow rate of 15l/m^2・min of the wet air. With an increase in the flow rate ratio between the dry air and the wet air the removal rate of water increased. A part of the latent energy of water vaporization was recovered as an increase in the temperature of the wet air. The removability of water decreased with elevation of temperature of hollow fiber membrane. The validity of the principle of the removal of water and the recovery of the heat of evaporation by the use of a hydrophilic porous membrane was confirmed.
福岡女子大学の論文
2002-03-20