Characteristics of ice/water mixture flow in a branching pipe and development of an ice fraction control technique.
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- KAWADA Yoshitaka
- Department of Mechanical Engineering, Nagaoka College of Technology
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- SHIRAKASHI Masataka
- Department of Mechanical Engineering, Nagaoka University of Technology
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- TAKIZAWA Shin'ya
- Shinano Kenshi Corporation
Bibliographic Information
- Other Title
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- 分岐管における氷水二相流の流動特性と氷分率制御
- ブンキカン ニ オケル コオリミズ 2ソウリュウ ノ リュウドウ トクセイ ト
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Abstract
A new district cooling system (DCS) utilizing the latent heat of ice was developed to increase the transport capacity of cooling energy supply. The characteristics of ice/water mixture flowing in a branching pipeline section in DCS was investigated experimentally and a control technique of cooling energy distribution through the branch pipe was developed. The branching section was composed of an 80mm diameter horizontal main pipe and a 50mm diameter branch pipe connected perpendicularly to the main pipe. Ice chips with an average diameter of 10mm and natural granular snow particles were used as the ice component. Although the energy loss of ice/water mixture flow due to branching is nearly equal to that of water irrespective of branching direction, ice fraction and velocity in the main pipe and ice particle size, the ice fraction in the branch pipe is strongly dependent on these factors. The newly devised controlling equipment of ice fraction in the branch pipe worked successfully for the ice/water mixture even when the most unfavorable condition.
Journal
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- Journal of the Japanese Society of Snow and Ice
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Journal of the Japanese Society of Snow and Ice 58 (5), 405-415, 1996
The Japanese Society of Snow and Ice
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Details 詳細情報について
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- CRID
- 1390001206462365312
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- NII Article ID
- 10002382542
- 10013124400
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- NII Book ID
- AN00131221
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- ISSN
- 18836267
- 03731006
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- NDL BIB ID
- 4027599
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed