太陽熱温水器を駆動熱源とする吸着式デシカント空調システム

  • 大蔵 将史
    金沢大学大学院自然科学研究科システム創成科学専攻
  • 児玉 昭雄
    金沢大学大学院自然科学研究科システム創成科学専攻

書誌事項

タイトル別名
  • Solar Assisted Adsorptive Desiccant Cooling System
  • 太陽熱温水器を駆動熱源とする吸着式デシカント空調システム--室内潜熱負荷を考慮した装置規模,システム性能の推算
  • タイヨウ ネツ オンスイキ オ クドウ ネツゲン ト スル キュウチャクシキ デシカント クウチョウ システム シツナイセンネツフカ オ コウリョ シタ ソウチ キボ システム セイノウ ノ スイサン
  • - 室内潜熱負荷を考慮した装置規模, システム性能の推算-
  • -Estimation of the performance and scale of the desiccant cooling system considering indoor latent heat load-

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抄録

Solar assisted desiccant coo1ing process is an effective means to reduce a latent heat load of the ventilation air. This paper describes the influences of ambient humidity and sensible heat factor (SHF) of the indoor room on the performance and scale of the desiccant cooling system. Two process configurations termed “ambient air mode” and “mixed air mode” were assumed. At “ambient air mode”, only ambient air is dehumidified and cooled in the desiccant process. The dehumidified air stream is mixed with return air and further cooled in the cooling coil. At “mixed air mode”, ambient air is mixed with return air and this mixed air stream is dehumidified in the desiccant process and cooled at the cooling coil. At “ambient air mode”, ambient air humidity had a significant impact on required amount of dehumidification since humid ambient air entered the desiccant process directly. In this case, higher temperature level and quantity, which is impossible to be supplied from commonly commercialized flat panel solar collectors, was required. At “mixed air mode”, the influence of increase of ambient humidity was not significant since humidity of the air entering the desiccant process became low by mixing with return air. At this mode, it was expected that 70°C of the circulating water and 37m2 of surface area of solar collector could produce a sufficient dehumidifying performance even in high latent heat condition. The contributing ratio of the desiccant wheel was also estimated. The ratio increased in higher latent heat condition due to increase of required amount of dehumidification. The contributing ratio of the thermal wheel became lower due to increase of saturated air temperature in the evaporative cooler.

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