Development of an Accordion-type Offset-fin Heat Exchanger for Air-conditioners
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- ITOH Masaaki
- Mechanical Engineering Research Laboratory, Hitachi, Ltd.
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- KOGURE Hiroshi
- Refrigeration & Air Conditioning Division, Hitachi, Ltd.
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- MIYAGI Masahiro
- Refrigeration & Air Conditioning Division, Hitachi, Ltd.
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- MOCHIZUKI Sadanari
- Dept. of Mechanical Engineering, Tokyo University of Agriculture and Technology
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- YAGI Yoshinao
- Tokyo Polytechnic College
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- KUNUGI Yoshifumi
- Mechanical Engineering Research Laboratory, Hitachi, Ltd.
Bibliographic Information
- Other Title
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- 空調用アコーディオン形オフセットフィン熱交換器の開発
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Abstract
To reduce the depth of the indoor heat exchanger in room air-conditioners, we studied fin and tube heat exchangers, and found that we could make the heat transfer coefficient of fins 30% higher than of conventional fins by reducing louver width and fin pitch.<br>We also improved water drainage on the surface of the fins by adopting accordion-type offset-fin heat exchangers.<br>We found that the material cost of a heat exchanger was minimized when the heat exchanger had a tube 7 mm in diameter, and we could increase the heat transter coefficient of the refrigerant side by developing a new grooved tube 7 mm in diameter.<br>We succeeded in making the heat exchanger 40% thinner than conventional types.
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 12 (2), 219-224, 1995
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
- 1390001204666314112
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- NII Article ID
- 10002713361
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- NII Book ID
- AN10035654
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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