Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils
In this work the authors considered a freezing-and-melting process of soils under the polyurethane-insulated polyethylene heating pipeline, which is used in the regions with permafrost soils. Temperature field dynamics of the “pipeline – soil” system is determined by heat conductivity equation in po...
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Peter the Great St. Petersburg Polytechnic University
2014
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ftdoajarticles:oai:doaj.org/article:8d74de117cb545faac4b74819d1d4821 2023-05-15T17:56:30+02:00 Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils M.P. Akimov S.D. Mordovskoy N.P. Starostin 2014-04-01T00:00:00Z https://doi.org/10.5862/MCE.46.3 https://doaj.org/article/8d74de117cb545faac4b74819d1d4821 EN eng Peter the Great St. Petersburg Polytechnic University http://www.engstroy.spb.ru/index_2014_02/03.pdf https://doaj.org/toc/2071-4726 https://doaj.org/toc/2071-0305 doi:10.5862/MCE.46.3 2071-4726 2071-0305 https://doaj.org/article/8d74de117cb545faac4b74819d1d4821 Инженерно-строительный журнал, Vol 46, Iss 2, Pp 14-23 (2014) pipeline permafrost temperature the Stefan problem thawing depth embedment depth insulation thickness Engineering (General). Civil engineering (General) TA1-2040 Building construction TH1-9745 article 2014 ftdoajarticles https://doi.org/10.5862/MCE.46.3 2022-12-30T23:11:40Z In this work the authors considered a freezing-and-melting process of soils under the polyurethane-insulated polyethylene heating pipeline, which is used in the regions with permafrost soils. Temperature field dynamics of the “pipeline – soil” system is determined by heat conductivity equation in polar coordinate system. The corresponding two-dimensional Stefan problem is solved by the finite differences method. The authors propose to determine the thickness of pipeline thermal insulation and the embedment depth upon the condition of melting depth reduction to an annual thawed layer of soil identified before the heating season. There are presented results of isotherm calculations for underground heat supply pipelines interacting with frozen soil. These results show that reduction of melting depth to annual thawed layer is probable. The calculations were carried out for simulated soil and temperature conditions of Yakutsk, Republic Sakha, Russia. Nevertheless, the results obtained can be applied in other permafrost areas. Article in Journal/Newspaper permafrost Yakutsk Directory of Open Access Journals: DOAJ Articles Sakha Yakutsk Magazine of Civil Engineering 46 2 14 23 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
pipeline permafrost temperature the Stefan problem thawing depth embedment depth insulation thickness Engineering (General). Civil engineering (General) TA1-2040 Building construction TH1-9745 |
spellingShingle |
pipeline permafrost temperature the Stefan problem thawing depth embedment depth insulation thickness Engineering (General). Civil engineering (General) TA1-2040 Building construction TH1-9745 M.P. Akimov S.D. Mordovskoy N.P. Starostin Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
topic_facet |
pipeline permafrost temperature the Stefan problem thawing depth embedment depth insulation thickness Engineering (General). Civil engineering (General) TA1-2040 Building construction TH1-9745 |
description |
In this work the authors considered a freezing-and-melting process of soils under the polyurethane-insulated polyethylene heating pipeline, which is used in the regions with permafrost soils. Temperature field dynamics of the “pipeline – soil” system is determined by heat conductivity equation in polar coordinate system. The corresponding two-dimensional Stefan problem is solved by the finite differences method. The authors propose to determine the thickness of pipeline thermal insulation and the embedment depth upon the condition of melting depth reduction to an annual thawed layer of soil identified before the heating season. There are presented results of isotherm calculations for underground heat supply pipelines interacting with frozen soil. These results show that reduction of melting depth to annual thawed layer is probable. The calculations were carried out for simulated soil and temperature conditions of Yakutsk, Republic Sakha, Russia. Nevertheless, the results obtained can be applied in other permafrost areas. |
format |
Article in Journal/Newspaper |
author |
M.P. Akimov S.D. Mordovskoy N.P. Starostin |
author_facet |
M.P. Akimov S.D. Mordovskoy N.P. Starostin |
author_sort |
M.P. Akimov |
title |
Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
title_short |
Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
title_full |
Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
title_fullStr |
Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
title_full_unstemmed |
Calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
title_sort |
calculating thermal insulation thickness and embedment depth of underground heat supply pipeline for permafrost soils |
publisher |
Peter the Great St. Petersburg Polytechnic University |
publishDate |
2014 |
url |
https://doi.org/10.5862/MCE.46.3 https://doaj.org/article/8d74de117cb545faac4b74819d1d4821 |
geographic |
Sakha Yakutsk |
geographic_facet |
Sakha Yakutsk |
genre |
permafrost Yakutsk |
genre_facet |
permafrost Yakutsk |
op_source |
Инженерно-строительный журнал, Vol 46, Iss 2, Pp 14-23 (2014) |
op_relation |
http://www.engstroy.spb.ru/index_2014_02/03.pdf https://doaj.org/toc/2071-4726 https://doaj.org/toc/2071-0305 doi:10.5862/MCE.46.3 2071-4726 2071-0305 https://doaj.org/article/8d74de117cb545faac4b74819d1d4821 |
op_doi |
https://doi.org/10.5862/MCE.46.3 |
container_title |
Magazine of Civil Engineering |
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46 |
container_issue |
2 |
container_start_page |
14 |
op_container_end_page |
23 |
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