Demonstration of A Complete Non-condensing Desiccant Air Conditioning System

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  • NABESHIMA Yuki
    Shizuoka Institute of Science andTechnology
  • TOGAWA Jun-ya
    Demonstration of A Complete Non-condensing Desiccant Air Conditioning System
  • NAGANO Katsunori
    Demonstration of A Complete Non-condensing Desiccant Air Conditioning System

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  • 潜熱顕熱の完全分離処理を目指したデシカントシステムの実証試験
  • センネツケンネツ ノ カンゼン ブンリ ショリ オ メザシタ デシカント システム ノ ジッショウ シケン

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Abstract

<p>The objective of this study is to develop a desiccant system using Wakkanai Siliceous Shale (WSS). In the previous study, we planned highly efficiency desiccant unit for household which consists of a total heat exchange element (T-HEX), a heating coil, a precooling coil and WSS desiccant rotor. And so, we improved this unit to accommodate small/medium-sized buildings. In this paper,we conducted a demonstration test to clarify the energy saving effect of a WSS desiccant system. Firstly, we improved an air conditioner to be a sensible heat treatment unit by increasing of evaporating temperature 8oC to 15oC. the demonstration test was carried out inside a factory site. Furthermore, the performance prediction by simple regression analysis was carried out to clarify the energy saving effect of the desiccant system. As a result, we confirmed that the desiccant system is capable to treat the sensible heat load and latent heat load separately. Cooling capacity and energy consumption of the air conditioner are reduced by the evaporation temperature control. WSS descant system can reduce the 28.6 % of energy consumption by compared with the conventional air conditioning system. Finally, by the regression analysis, the energy saving effect for cooling using the WSS desiccant system showed 39.7 % for the whole system in the summer season.</p>

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