書誌事項
- タイトル別名
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- Boiling Heat Transfer and Pressure Drop of a Refrigerant Flowing Vertically Upward in a Small Diameter Tube
- スイチョク サイカンナイ ジョウショウリュウ ノ フットウ ネツ デンタツ ト アツリョク ソンシツ
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In the present study, experiments were performed to examine characteristics of flow boiling heat transfer and pressure drop of a refrigerant R410A flowing vertically upward in a copper smooth tube with 1.0 mm inside diameter for the development of a high-performance heat exchanger using small diameter tubes for air conditioning systems. Local heat transfer coefficients were measured in a range of mass fluxes from 30 to 200 kg/(m2•s), heat fluxes from 1 to 16 kW/m2 and qualities from 0.1 to over 1 at evaporation temperature of 10°C, and pressure drops were also measured at mass fluxes of 100 and 200 kg/(m2•s) and qualities from 0.1 to 0.9. Three types of flow pattern were observed in the tube: A slug, a slug-annular and an annular flow. Based on the measurements, the characteristics of frictional pressure drop, heat transfer coefficient and dryout qualities were clarified. The measured pressure drop and heat transfer coefficient were compared with correlations.
収録刊行物
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- 日本冷凍空調学会論文集
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日本冷凍空調学会論文集 24 (4), 359-369, 2007
公益社団法人 日本冷凍空調学会
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詳細情報 詳細情報について
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- CRID
- 1390001204666998272
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- NII論文ID
- 10020129365
- 130004566109
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- NII書誌ID
- AA11125910
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- COI
- 1:CAS:528:DC%2BD1cXkt1KmsL8%3D
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- ISSN
- 2185789X
- 13444905
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- NDL書誌ID
- 9347610
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可