Abstract
The objective of this study is to develop a desiccant system using Wakkanai siliceous shale (WSS). This article is the 4th report of the series. Two honeycombed desiccant rotors containing WSS powder with chlorides impregnated was made and evaluated. These rotors were applied into the test desiccant apparatus. It has an additional sensible heat exchange rotor (SHE). To regenerate the first rotor, hot water at 40 ℃ was supplied to HEX. In addition, cold water at 23 ℃ was provided to HEX for pre-cooling the second rotor. The amount of dehumidification was 5.7 g/kgDA at 1-1 rpm operation, and the condition of air temperature and humidity of the outside and room were 30 ℃, 75 %RH and 26 ℃ and 60 %RH respectively. (1-1 rpm: rotating speed of the first - second rotors) Though the amount of dehumidification didn't increase according to equipping a SHE rotor, we found that it was effective to reduce a used thermal energy for pre-cooling. As the result, the maximum dehumidification of 6.5 g/kgDA was obtained at 1-4rpm of first and second rotors with additional pre-cooling for outside air. This was 86 %RH of the latent cooling load between OA and RA.
