Assessment of the effectiveness of two heat removal techniques for permafrost protection

Publication: Research - peer-reviewJournal article – Annual report year: 2008

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Assessment of the effectiveness of two heat removal techniques for permafrost protection. / Jørgensen, Anders Stuhr; Doré, Guy; Voyer, Érika; Chataigner, Yohann; Gosselin, Louis.

In: Cold Regions Science and Technology, Vol. 53, No. 2, 2008, p. 179-192.

Publication: Research - peer-reviewJournal article – Annual report year: 2008

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Jørgensen, Anders Stuhr; Doré, Guy; Voyer, Érika; Chataigner, Yohann; Gosselin, Louis / Assessment of the effectiveness of two heat removal techniques for permafrost protection.

In: Cold Regions Science and Technology, Vol. 53, No. 2, 2008, p. 179-192.

Publication: Research - peer-reviewJournal article – Annual report year: 2008

Bibtex

@article{ba6274187bf24f72bad8789dec29b1e6,
title = "Assessment of the effectiveness of two heat removal techniques for permafrost protection",
publisher = "Elsevier BV",
author = "Jørgensen, {Anders Stuhr} and Guy Doré and Érika Voyer and Yohann Chataigner and Louis Gosselin",
year = "2008",
doi = "10.1016/j.coldregions.2007.12.002",
volume = "53",
number = "2",
pages = "179--192",
journal = "Cold Regions Science and Technology",
issn = "0165-232X",

}

RIS

TY - JOUR

T1 - Assessment of the effectiveness of two heat removal techniques for permafrost protection

A1 - Jørgensen,Anders Stuhr

A1 - Doré,Guy

A1 - Voyer,Érika

A1 - Chataigner,Yohann

A1 - Gosselin,Louis

AU - Jørgensen,Anders Stuhr

AU - Doré,Guy

AU - Voyer,Érika

AU - Chataigner,Yohann

AU - Gosselin,Louis

PB - Elsevier BV

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

KW - Heat removal

KW - Air convection embankment

KW - Mitigation techniques

KW - Heat drain

KW - Cooling effect

KW - Permafrost degradation

U2 - 10.1016/j.coldregions.2007.12.002

DO - 10.1016/j.coldregions.2007.12.002

JO - Cold Regions Science and Technology

JF - Cold Regions Science and Technology

SN - 0165-232X

IS - 2

VL - 53

SP - 179

EP - 192

ER -