Assessment of the effectiveness of two heat removal techniques for permafrost protection
Two mitigation techniques, an air convection embankment and an embankment of a granular material with an integrated heat drain, have been tested for the implementation in the shoulders of road and airfield embankments in permafrost regions. Both techniques will allow cold air to penetrate the embank...
Published in: | Cold Regions Science and Technology |
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Language: | English |
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2008
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Online Access: | https://orbit.dtu.dk/en/publications/ba627418-7bf2-4f72-bad8-789dec29b1e6 https://doi.org/10.1016/j.coldregions.2007.12.002 |
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ftdtupubl:oai:pure.atira.dk:publications/ba627418-7bf2-4f72-bad8-789dec29b1e6 2024-09-15T18:29:43+00:00 Assessment of the effectiveness of two heat removal techniques for permafrost protection Jørgensen, Anders Stuhr Doré, Guy Voyer, Érika Chataigner, Yohann Gosselin, Louis 2008 https://orbit.dtu.dk/en/publications/ba627418-7bf2-4f72-bad8-789dec29b1e6 https://doi.org/10.1016/j.coldregions.2007.12.002 eng eng https://orbit.dtu.dk/en/publications/ba627418-7bf2-4f72-bad8-789dec29b1e6 info:eu-repo/semantics/restrictedAccess Jørgensen , A S , Doré , G , Voyer , É , Chataigner , Y & Gosselin , L 2008 , ' Assessment of the effectiveness of two heat removal techniques for permafrost protection ' , Cold Regions Science and Technology , vol. 53 , no. 2 , pp. 179-192 . https://doi.org/10.1016/j.coldregions.2007.12.002 Heat removal Air convection embankment Mitigation techniques Heat drain Cooling effect Permafrost degradation article 2008 ftdtupubl https://doi.org/10.1016/j.coldregions.2007.12.002 2024-08-13T00:03:05Z Two mitigation techniques, an air convection embankment and an embankment of a granular material with an integrated heat drain, have been tested for the implementation in the shoulders of road and airfield embankments in permafrost regions. Both techniques will allow cold air to penetrate the embankment from the bottom, while warm air is dissipated at the top. The techniques have been tested in the laboratory, where a small-scale embankment (SSE) was build and placed in a cold room to measure the embankment temperatures during winter conditions. A numerical modeling has been developed and calibrated on the SSE to verify the effects on the thermal regime of full-scale embankments. The results have shown that both techniques will cause a decrease in temperature, which will minimize or even possibly avoid permafrost degradation underneath the embankments. The laboratory results have also shown that the effectiveness of the air convection embankment technique can be increased during winter conditions by ventilating the top and the bottom of the embankment shoulders. Installation of air intakes along the shoulders will facilitate air flow info the system during winter and will trap the cold air in the bottom of the embankment through the summer period. This solution has been verified using the numerical model. Article in Journal/Newspaper permafrost Technical University of Denmark: DTU Orbit Cold Regions Science and Technology 53 2 179 192 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Heat removal Air convection embankment Mitigation techniques Heat drain Cooling effect Permafrost degradation |
spellingShingle |
Heat removal Air convection embankment Mitigation techniques Heat drain Cooling effect Permafrost degradation Jørgensen, Anders Stuhr Doré, Guy Voyer, Érika Chataigner, Yohann Gosselin, Louis Assessment of the effectiveness of two heat removal techniques for permafrost protection |
topic_facet |
Heat removal Air convection embankment Mitigation techniques Heat drain Cooling effect Permafrost degradation |
description |
Two mitigation techniques, an air convection embankment and an embankment of a granular material with an integrated heat drain, have been tested for the implementation in the shoulders of road and airfield embankments in permafrost regions. Both techniques will allow cold air to penetrate the embankment from the bottom, while warm air is dissipated at the top. The techniques have been tested in the laboratory, where a small-scale embankment (SSE) was build and placed in a cold room to measure the embankment temperatures during winter conditions. A numerical modeling has been developed and calibrated on the SSE to verify the effects on the thermal regime of full-scale embankments. The results have shown that both techniques will cause a decrease in temperature, which will minimize or even possibly avoid permafrost degradation underneath the embankments. The laboratory results have also shown that the effectiveness of the air convection embankment technique can be increased during winter conditions by ventilating the top and the bottom of the embankment shoulders. Installation of air intakes along the shoulders will facilitate air flow info the system during winter and will trap the cold air in the bottom of the embankment through the summer period. This solution has been verified using the numerical model. |
format |
Article in Journal/Newspaper |
author |
Jørgensen, Anders Stuhr Doré, Guy Voyer, Érika Chataigner, Yohann Gosselin, Louis |
author_facet |
Jørgensen, Anders Stuhr Doré, Guy Voyer, Érika Chataigner, Yohann Gosselin, Louis |
author_sort |
Jørgensen, Anders Stuhr |
title |
Assessment of the effectiveness of two heat removal techniques for permafrost protection |
title_short |
Assessment of the effectiveness of two heat removal techniques for permafrost protection |
title_full |
Assessment of the effectiveness of two heat removal techniques for permafrost protection |
title_fullStr |
Assessment of the effectiveness of two heat removal techniques for permafrost protection |
title_full_unstemmed |
Assessment of the effectiveness of two heat removal techniques for permafrost protection |
title_sort |
assessment of the effectiveness of two heat removal techniques for permafrost protection |
publishDate |
2008 |
url |
https://orbit.dtu.dk/en/publications/ba627418-7bf2-4f72-bad8-789dec29b1e6 https://doi.org/10.1016/j.coldregions.2007.12.002 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Jørgensen , A S , Doré , G , Voyer , É , Chataigner , Y & Gosselin , L 2008 , ' Assessment of the effectiveness of two heat removal techniques for permafrost protection ' , Cold Regions Science and Technology , vol. 53 , no. 2 , pp. 179-192 . https://doi.org/10.1016/j.coldregions.2007.12.002 |
op_relation |
https://orbit.dtu.dk/en/publications/ba627418-7bf2-4f72-bad8-789dec29b1e6 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.coldregions.2007.12.002 |
container_title |
Cold Regions Science and Technology |
container_volume |
53 |
container_issue |
2 |
container_start_page |
179 |
op_container_end_page |
192 |
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1810471144567865344 |