Efficiency Enhancement of Chiller and Heat Pump Using Natural Working Fluids with Two-phase Flow Ejector
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- YOSHIKAWA Choiku
- Mayekawa Mfg. Co., Ltd.
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- HATTORI Kazuhiro
- Mayekawa Mfg. Co., Ltd.
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- JEONG Jongsoo
- Dept. of Mechanical Engineering, Graduate School of Waseda University
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- SAITO Kiyoshi
- Dept. of Mechanical Engineering, School of Sci. and Engr., Waseda University
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- KAWAI Sunao
- Dept. of Mechanical Engineering, School of Sci. and Engr., Waseda University
Bibliographic Information
- Other Title
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- 自然冷媒を用いた冷凍機・ヒートポンプのエジェクターによる高効率化に関する研究
- -第2報：圧縮式サイクルへのエジェクターの適用-
- -2nd Report : Effect of Ejector on Vapor Compression Cycle-
Description
An ejector can transform the expansion energy of the driving flow into the pressure build-up energy of the suction flow. Therefore, by utilizing the ejector instead of the expansion valve for the vapor compression cycle, the performance of the cycle can be greatly improved. Until now, the performance of the vapor compression cycle with the ejector has not been examined sufficiently. Therefore, this paper constructs the simulation model of the vapor compression cycle with the ejector and investigates the performance of that cycle by the simulation. Working fluids are ammonia and CO2. As a result, in case of the ejector efficiency 90%, COP of the vapor compression cycle using ammonia with the ejector is 5% higher than that of the conventional cycle and COP using CO2 with the ejector is 22% higher than that of the conventional cycle.
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 21 (1), 13-21, 2004
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
- 1390001204665833088
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- NII Article ID
- 130004566015
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- ISSN
- 2185789X
- 13444905
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed
