Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study.
A laboratory study was made to investigate the use of electric heat cables to counteract culvert icing. An automatic system for producing a thaw tunnel of a preselected diameter was developed and tested. An 80-in.-long, 1 ft-diam culvert with a 10 ft copper sheath heating cable modeled a typical Ala...
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ftdtic:AD0777516 2023-05-15T16:37:25+02:00 Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. Gaskin,David A. Stanley,Leonard E. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1974-03 text/html http://www.dtic.mil/docs/citations/AD0777516 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0777516 en eng http://www.dtic.mil/docs/citations/AD0777516 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Air Condition Heating Lighting & Ventilating Civil Engineering *Roads *Deicing systems *Electric heaters Drainage Ice formation Land ice Cold regions Cost analysis Alaska Computer programs FORTRAN *Culverts Text 1974 ftdtic 2016-02-19T03:59:23Z A laboratory study was made to investigate the use of electric heat cables to counteract culvert icing. An automatic system for producing a thaw tunnel of a preselected diameter was developed and tested. An 80-in.-long, 1 ft-diam culvert with a 10 ft copper sheath heating cable modeled a typical Alaskan installation. Tests were made to evaluate several continuous power levels, a short-term percentage timer, and the automatic system. Maximum efficiency (cross section produced/unit energy input) occurred when the cable was operated continuously at its maximum permissible power level. The short-term timer system was less efficient than applying the same amount of energy continuously. The automatic system performed well in the laboratory, but may need additional design work to ensure high reliability in field applications. (Modified author abstract) Text Ice permafrost Alaska Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Air Condition Heating Lighting & Ventilating Civil Engineering *Roads *Deicing systems *Electric heaters Drainage Ice formation Land ice Cold regions Cost analysis Alaska Computer programs FORTRAN *Culverts |
spellingShingle |
Snow Ice and Permafrost Air Condition Heating Lighting & Ventilating Civil Engineering *Roads *Deicing systems *Electric heaters Drainage Ice formation Land ice Cold regions Cost analysis Alaska Computer programs FORTRAN *Culverts Gaskin,David A. Stanley,Leonard E. Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. |
topic_facet |
Snow Ice and Permafrost Air Condition Heating Lighting & Ventilating Civil Engineering *Roads *Deicing systems *Electric heaters Drainage Ice formation Land ice Cold regions Cost analysis Alaska Computer programs FORTRAN *Culverts |
description |
A laboratory study was made to investigate the use of electric heat cables to counteract culvert icing. An automatic system for producing a thaw tunnel of a preselected diameter was developed and tested. An 80-in.-long, 1 ft-diam culvert with a 10 ft copper sheath heating cable modeled a typical Alaskan installation. Tests were made to evaluate several continuous power levels, a short-term percentage timer, and the automatic system. Maximum efficiency (cross section produced/unit energy input) occurred when the cable was operated continuously at its maximum permissible power level. The short-term timer system was less efficient than applying the same amount of energy continuously. The automatic system performed well in the laboratory, but may need additional design work to ensure high reliability in field applications. (Modified author abstract) |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Gaskin,David A. Stanley,Leonard E. |
author_facet |
Gaskin,David A. Stanley,Leonard E. |
author_sort |
Gaskin,David A. |
title |
Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. |
title_short |
Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. |
title_full |
Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. |
title_fullStr |
Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. |
title_full_unstemmed |
Application of Electrical Energy to Culvert Icing Problems. A Laboratory Study. |
title_sort |
application of electrical energy to culvert icing problems. a laboratory study. |
publishDate |
1974 |
url |
http://www.dtic.mil/docs/citations/AD0777516 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0777516 |
genre |
Ice permafrost Alaska |
genre_facet |
Ice permafrost Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0777516 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766027707203715072 |