蓄熱地下水熱源ヒートポンプに関する研究　　熱交換器の伝熱特性に及ぼす鉄さびの影響とその除去法

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  • Study of Heat Pump System using Stored Ground Water. The Effect of Iron Rust upon Heat Transfer and Iron Lump Removal Method within Heat Exchanger.
  • チクネツ チカスイ ネツゲン ヒートポンプ ニ カンスル ケンキュウ ネツコウカンキ ノ デンネツ トクセイ ニ オヨボス テツサビ ノ エイキョウ ト ソノ ジョキョホウ

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This paper describes an experimental and observational study of iron rust removal method and iron lump formation mechanism within a heat exchanger of a small type heat pump. Since a heat exchanger of a heat pump using water is corroded, heat transfer coefficient (in other words, C.O.P.) is decreased. In this study, iron rust removal system was proposed and cleared the effectiveness. Moreover, iron lump formation mechanism was clarified by an experiment with a double pipe heat exchanger. The conclusions were as follows. 1.C.O.P. of a small type heat pump was recovered by the iron rust removal system. 2.C.O.P. decrease of a heat pump is caused by iron lump grown within a heat exchanger. The source of this iron lump is not the iron rust including water, but the iron rust produced from a heat exchanger.

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