Condensation Heat Transfer of HFC and HFO Refrigerants in a Horizontal Single Rectangular Mini-channel
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- MATSUMOTO Takashi
- Department of Mechanical Engineering, Graduate School, Kyushu University Advanced Technology R&D Center, Mitsubishi Electric Corporation
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- ARATA Yohei
- Department of Mechanical Engineering, Graduate School, Kyushu University
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- KUTSUNOYA Kai
- Department of Mechanical Engineering, Graduate School, Kyushu University
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- MIYATA Kazushi
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University
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- HAMAMOTO Yoshinori
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University
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- MORI Hideo
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University
Bibliographic Information
- Other Title
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- 水平単一矩形ミニチャンネルにおけるHFC およびHFO 冷媒の凝縮熱伝達特性
- スイヘイ タンイツ クケイ ミニチャンネル ニ オケル HFC オヨビ HFOレイバイ ノ ギョウシュク ネツ デンタツ トクセイ
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Description
<p>In this study, to clarify the fundamental characteristics of condensation heat transfer of refrigerant in a horizontal rectangular mini-channel at low mass fluxes down to 40 kg/(m2ꞏs), experiments were performed using a single rectangular small tube with a hydraulic diameter of 1.02 mm. HFC134a, HFC32 and HFO1234ze(E) are used as test refrigerants. The range of refrigerant mass flux condition was 40-400 kg/(m2ꞏs), and that of heat flux was 2-8 kW/m2. From the present data, it was clarified that the condensation heat transfer coefficient at a low mass flux 100 kg/(m2ꞏs) or less was noticeably high value compared with that at relatively high mass flux conditions. Besides, this tendency was different from that was seen in experimental studies using multiport tubes and tendency predicted by existing correlations applied by extension to the low mass flux condition.</p>
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 36 (4), 189-, 2019-12-30
Japan Society of Refrigerating and Air Conditioning Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1391975831225009408
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- NII Article ID
- 130007964545
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- NII Book ID
- AA11125910
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- ISSN
- 2185789X
- 13444905
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- NDL BIB ID
- 030196187
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed