RUNNING TEST AND PERFORMANCE EVALUATION OF A CHILLED-WATER THERMAL ENERGY STORAGE HVAC SYSTEM WITH HIGH TEMPERATURE DIFFERENTIALS

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  • YU Hang
    Human-Environment Studies, Dept. of Architecture, Kyushu Univ.
  • WATANABE Toshiyuki
    Human-Environment Studies, Dept. of Architecture, Kyushu Univ.
  • AKASHI Yasunori
    Human-Environment Studies, Dept. of Architecture, Kyushu Univ.
  • NISHIYAMA Norimitsu
    Dept. of Environmental Engineering and Building Services, Kurume Instituteof Technology
  • GUI Jun
    Dept. of Environmental Engineering and Building Services, Kurume Instituteof Technology
  • UEKI Tomoko
    Human-Environment Studies, Dept. of Architecture, Kyushu Univ.
  • TSUTSUMI Shogo
    Human-Environment Studies, Dept. of Architecture, Kyushu Univ.

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Other Title
  • 大温度差水蓄熱式空調システムの運転実績および性能評価
  • ダイ オンド サ ミズ チクネツシキ クウチョウ システム ノ ウンテン ジッセキ オヨビ セイノウ ヒョウカ

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The objective of this paper is to investigate how to make the best use of the chilled-water thermal energy storage HVAC system and to find out the ways to save energy. As we set the temperatures of a water storage tank to 7 and 17 degree centigrade, the capacities of the chilled-water storage tank and the distribution system were decreased essentially. The delivering energy was reduced due to the high temperature differentials, keeping room humidity in moderate condition. We tried various temperature conditions of the chilled-water storage tank, for example at 7 and 19 degree centigrade, to find the critical water temperature conditions. And we also increased the temperature differentials of AHU supply and return water to verify its benefits in economics.

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