蓄熱・ヒートポンプ・熱輸送　　ベンチスケール水蒸気排気式ヒドロゲル氷蓄熱槽の運転　　ゲルユニットの製氷および冷熱取り出し

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  • Thermal Energy Storage, Heat Pump and Thermal Energy Transportation Technologies. Operation of a Bench-Scaled Gel Ice Storage by Water Vapor Evacuation. Effect of sizes and shape of gel units on ice production rate, ice packing factor and cooling output.
  • ベンチスケール スイジョウキ ハイキシキ ヒドロゲルヒョウチクネツソウ ノ ウ
  • Effect of sizes and shape of gel units on ice production rate, ice packing factor and cooling output
  • ゲルユニットの製氷および冷熱取り出し

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We constructed a 40 liter gel ice storage to search for how to design gel units as an ice storage substance. We studied the effects of size and shape of gel units on the ice production rate, ice packing factor and the cooling output under practical operation conditions. The following results were obtained. (1) To get a uniform temperature distribution within the gel units during ice production, we have to design the sizes and shapes of them so that the mean evacuation rate per evaporation surface area of the gel will be a value of under 5.7 g/ (m2·min). (2) A column gel unit of 30 mm in diameter showed uniform ice production at a practical speed. (3) From the experiments with 20 to 40 liters of column and sphere gel units, the followings were shown : a) The ice packing factor was 58% for the column gel unit. b) Water temperatures of 2.5 to 4°C were obtained at the outlet of the gel ice storage packed with 40 liters of column gel unit. c) The cooling output for the column gel unit was 0.58 kW, and this value is high enough for practical use.

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