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Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column

In earlier works by the present authors, two systems for sustainable energy were proposed: (i) a system for urban snow removal in winter and storage for air conditioning in summer, applied to Nagaoka City, which suffers heavy snow fall every winter, and (ii) a district cooling system utilizing laten...

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Main Authors: Shirakashi, Masataka, Yamada, Shuichi, Kawada, Yoshitaka, Hirochi, Takero
Format: Article
Language:English
Published: MDPI AG 2014
Subjects:
T Technology
Online Access:http://eprints.utm.my/id/eprint/52029/1/ShuichiTamada2014_BlockingOf%20SnowWaterSlurryFlow.pdf
http://eprints.utm.my/id/eprint/52029/
http://dx.doi.org/10.3390/su6020530
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spelling my.utm.520292018-08-29T08:26:22Z http://eprints.utm.my/id/eprint/52029/ Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column Shirakashi, Masataka Yamada, Shuichi Kawada, Yoshitaka Hirochi, Takero T Technology In earlier works by the present authors, two systems for sustainable energy were proposed: (i) a system for urban snow removal in winter and storage for air conditioning in summer, applied to Nagaoka City, which suffers heavy snow fall every winter, and (ii) a district cooling system utilizing latent heat of ice to reduce the size of storage reservoir and transportation pipeline system. In these systems, the hydraulic conveying of snow or ice through pump-and-pipeline is the key technique to be developed, since characteristics of snow (ice)/ water slurry is largely different from those of conventional non-cohesive solid particle slurries. In this study, the blocking of pipeline of snow/water slurry is investigated experimentally. While the blocking of conventional slurry occurs due to deposition of heavy particles at low flow velocity or arching of large rigid particles, that of snow/water slurry is caused by a compressed plug of snow formed due to cohesive nature of snow particles. This is because the strength of snow plug formed at a high resistance piping element, such as an orifice, becomes higher when the compression velocity is lower, resulting in a solid-like plug filling the whole channel upstream the element MDPI AG 2014 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/52029/1/ShuichiTamada2014_BlockingOf%20SnowWaterSlurryFlow.pdf Shirakashi, Masataka and Yamada, Shuichi and Kawada, Yoshitaka and Hirochi, Takero (2014) Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column. Sustainability, 6 (2). pp. 530-544. ISSN 2071-1050 http://dx.doi.org/10.3390/su6020530 DOI: 10.3390/su6020530
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic T Technology
spellingShingle T Technology
Shirakashi, Masataka
Yamada, Shuichi
Kawada, Yoshitaka
Hirochi, Takero
Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
description In earlier works by the present authors, two systems for sustainable energy were proposed: (i) a system for urban snow removal in winter and storage for air conditioning in summer, applied to Nagaoka City, which suffers heavy snow fall every winter, and (ii) a district cooling system utilizing latent heat of ice to reduce the size of storage reservoir and transportation pipeline system. In these systems, the hydraulic conveying of snow or ice through pump-and-pipeline is the key technique to be developed, since characteristics of snow (ice)/ water slurry is largely different from those of conventional non-cohesive solid particle slurries. In this study, the blocking of pipeline of snow/water slurry is investigated experimentally. While the blocking of conventional slurry occurs due to deposition of heavy particles at low flow velocity or arching of large rigid particles, that of snow/water slurry is caused by a compressed plug of snow formed due to cohesive nature of snow particles. This is because the strength of snow plug formed at a high resistance piping element, such as an orifice, becomes higher when the compression velocity is lower, resulting in a solid-like plug filling the whole channel upstream the element
format Article
author Shirakashi, Masataka
Yamada, Shuichi
Kawada, Yoshitaka
Hirochi, Takero
author_facet Shirakashi, Masataka
Yamada, Shuichi
Kawada, Yoshitaka
Hirochi, Takero
author_sort Shirakashi, Masataka
title Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
title_short Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
title_full Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
title_fullStr Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
title_full_unstemmed Blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
title_sort blocking of snow/water slurry flow in pipeline caused by compression-strengthening of snow column
publisher MDPI AG
publishDate 2014
url http://eprints.utm.my/id/eprint/52029/1/ShuichiTamada2014_BlockingOf%20SnowWaterSlurryFlow.pdf
http://eprints.utm.my/id/eprint/52029/
http://dx.doi.org/10.3390/su6020530
_version_ 1643653132161384448
score 13.211869

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