成果報告書詳細
管理番号100013730
タイトル*平成20年度中間年報 「エネルギー使用合理化技術戦略的開発 エネルギー有効利用基盤技術先導研究開発 稚内層珪質頁岩デシカント換気空調を用いた高効率冷暖房・給湯ヒートポンプシステムの研究開発」
公開日2009/4/24
報告書年度2008 - 2008
委託先名国立大学法人北海道大学 有限会社稚内グリーンファクトリー 富士スレート株式会社 株式会社自然素材研究所 サンポット株式会社
プロジェクト番号P03033
部署名省エネルギー技術開発部
和文要約以下本編抜粋:(1)稚内層珪質頁岩の水蒸気吸着性能の向上に関する研究(北海道大学、稚内グリーンファクトリー)稚内層珪質頁岩(WSS)粒子の最大水蒸気吸着量は、温度25℃、相対湿度(RH)95%において250mg/g-d.b.であり、A型シリカゲルの半分、B型シリカゲルの約1/3程度である。
英文要約Title: Research and Development of Heat Pump System with Desuperheater for Effective Cooling, Heating, and Hot Water Supply Combined with Desiccant Ventilation System Using Wakkanai Siliceous Shale This fundamental research project consists of three research and development works. The first work is to improve the water adsorption ability of Wakkanai Siliceous Shale (WSS). The WSS is a natural porous material distributed in the northern part of Hokkaido, Japan. The maximum water adsorption amount (Wm) of the WSS particles estimated from the water adsorption isotherms is 250 mg/g-d.b. at 25 deg C and 95 % relative humidity (RH). The target until the end of March, 2009 is to achieve the value over 375 mg/g-d.b. of Wm and 100 mg/g/hr of the water adsorption speed (Ws) obtained from a cyclic test between 30 deg C - 75 %RH and 40 deg C - 30%RH. For this purpose, two modification procedures, a fixation of chloride components (LiCl and NaCl) on the WSS pore surface by introducing these chloride solutions into the pores, and the modification of pore volume by soaking WSS in NaOH solution, were utilized. By the combination of these procedures, the Wm-value gave 478 mg/g-d.b.. The Ws-value showed 130 mg/g, which was the same value as Silica-gel B type. The second work is to develop two kinds of desiccant filters: a ceramic filter obtained by extruding a kneaded WSS and a honey-combed filter obtained by weaving the WSS contained-paper. For the making of the ceramic filter, the optimal extruding condition was decided by the examination of the various mixture ratio of WSS, clay and dispersants. Then, four types of ceramic filters (honey-comb, helix, star shape and random noodle types) were developed. The Wm value of the ceramic filter was about 160 mg/g-d.b. To increase this performance, the mixture ratio and the calcined temperature will be investigated. On the other hand, the WSS contained-papers based on a pulp or a chemical fiber were developed to make the paper honey combed filter. The Wm values of each paper were 135 mg/g-d.b. and 100 mg/g-d.b.. In addition, by the fixation of chloride components, the Wm was about 7 times higher than that of the WSS contained-Paper. Based on these results, the honey combed filters were made by weaving the WSS contained-paper. The evaluation of the water adsorprion / desorption amount (Wad) of developed filter was performed, compared with commercial desiccant filters. It was found that the Wad -value of the developed filter was higher than that of silica-gel based filter at the low temperature condition of 40 deg C. The third work is the development of heat pump system with desuperheter for cooling, heating and hot water supply. By using a helical coil type heat exchanger as a desuperheater, the hot water of 65 deg C could be obtained by the heat exchange between the water and the superheated gases from compressor.
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