Review of Thermosyphon Applications
Thermosyphons have been used for stabilizing permafrost since 1960. The original thermopile was designed as a vertical unit with one end buried in the ground and the other end exposed to the air. More recently, flat, loop, and buried thermosyphons have been developed. Thermosyphons consist of a pipe...
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ftdtic:ADA595037 2023-05-15T17:57:27+02:00 Review of Thermosyphon Applications Wagner, Anna M ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB 2014-02-11 text/html http://www.dtic.mil/docs/citations/ADA595037 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA595037 en eng http://www.dtic.mil/docs/citations/ADA595037 Approved for public release; distribution is unlimited. DTIC Air Condition Heating Lighting & Ventilating Pumps Filters Pipes Tubing Fittings & Vlvs Thermodynamics *HEAT TRANSFER *THERMOPILES ATMOSPHERIC TEMPERATURE CONDENSATION CONDENSERS(LIQUEFIERS) EMBANKMENTS EVAPORATORS FOUNDATIONS(STRUCTURES) GRAVITY HYBRID SYSTEMS MONITORING PERMAFROST PIPELINES RETROFITTING STABILIZATION TEMPERATURE UNDERGROUND BURIED THERMOSYPHONS FLAT LOOP THERMOSYPHONS FLAT THERMOSYPHONS FOUNDATION STABILITY *THERMOSYPHONS VERTICAL THERMOSYPHONS SLOPED THERMOSYPHONS FLEXIBLE THERMOSYPHONS HAIRPIN THERMOSYPHONS ARTIFICIAL FROZEN BARRIERS Text 2014 ftdtic 2016-02-24T13:48:58Z Thermosyphons have been used for stabilizing permafrost since 1960. The original thermopile was designed as a vertical unit with one end buried in the ground and the other end exposed to the air. More recently, flat, loop, and buried thermosyphons have been developed. Thermosyphons consist of a pipe or series of pipes that are installed with one part below ground (evaporator) and the other exposed to the air (condenser). They are filled with a pressurized fluid that evaporates because of the heat of the soil and rises as a vapor to the condenser. If the air temperature is lower than that of the soil, the vapor will condense on the inside walls of the pipe and release the transported heat from the ground to the air. The condensate then returns to the evaporator by gravity. When the air temperature is higher than that of the soil, the heat transfer ceases and the unit is dormant. Presented here is a general overview of applications of thermosyphons in cold regions. The original document contains color images. Text permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Air Condition Heating Lighting & Ventilating Pumps Filters Pipes Tubing Fittings & Vlvs Thermodynamics *HEAT TRANSFER *THERMOPILES ATMOSPHERIC TEMPERATURE CONDENSATION CONDENSERS(LIQUEFIERS) EMBANKMENTS EVAPORATORS FOUNDATIONS(STRUCTURES) GRAVITY HYBRID SYSTEMS MONITORING PERMAFROST PIPELINES RETROFITTING STABILIZATION TEMPERATURE UNDERGROUND BURIED THERMOSYPHONS FLAT LOOP THERMOSYPHONS FLAT THERMOSYPHONS FOUNDATION STABILITY *THERMOSYPHONS VERTICAL THERMOSYPHONS SLOPED THERMOSYPHONS FLEXIBLE THERMOSYPHONS HAIRPIN THERMOSYPHONS ARTIFICIAL FROZEN BARRIERS |
spellingShingle |
Air Condition Heating Lighting & Ventilating Pumps Filters Pipes Tubing Fittings & Vlvs Thermodynamics *HEAT TRANSFER *THERMOPILES ATMOSPHERIC TEMPERATURE CONDENSATION CONDENSERS(LIQUEFIERS) EMBANKMENTS EVAPORATORS FOUNDATIONS(STRUCTURES) GRAVITY HYBRID SYSTEMS MONITORING PERMAFROST PIPELINES RETROFITTING STABILIZATION TEMPERATURE UNDERGROUND BURIED THERMOSYPHONS FLAT LOOP THERMOSYPHONS FLAT THERMOSYPHONS FOUNDATION STABILITY *THERMOSYPHONS VERTICAL THERMOSYPHONS SLOPED THERMOSYPHONS FLEXIBLE THERMOSYPHONS HAIRPIN THERMOSYPHONS ARTIFICIAL FROZEN BARRIERS Wagner, Anna M Review of Thermosyphon Applications |
topic_facet |
Air Condition Heating Lighting & Ventilating Pumps Filters Pipes Tubing Fittings & Vlvs Thermodynamics *HEAT TRANSFER *THERMOPILES ATMOSPHERIC TEMPERATURE CONDENSATION CONDENSERS(LIQUEFIERS) EMBANKMENTS EVAPORATORS FOUNDATIONS(STRUCTURES) GRAVITY HYBRID SYSTEMS MONITORING PERMAFROST PIPELINES RETROFITTING STABILIZATION TEMPERATURE UNDERGROUND BURIED THERMOSYPHONS FLAT LOOP THERMOSYPHONS FLAT THERMOSYPHONS FOUNDATION STABILITY *THERMOSYPHONS VERTICAL THERMOSYPHONS SLOPED THERMOSYPHONS FLEXIBLE THERMOSYPHONS HAIRPIN THERMOSYPHONS ARTIFICIAL FROZEN BARRIERS |
description |
Thermosyphons have been used for stabilizing permafrost since 1960. The original thermopile was designed as a vertical unit with one end buried in the ground and the other end exposed to the air. More recently, flat, loop, and buried thermosyphons have been developed. Thermosyphons consist of a pipe or series of pipes that are installed with one part below ground (evaporator) and the other exposed to the air (condenser). They are filled with a pressurized fluid that evaporates because of the heat of the soil and rises as a vapor to the condenser. If the air temperature is lower than that of the soil, the vapor will condense on the inside walls of the pipe and release the transported heat from the ground to the air. The condensate then returns to the evaporator by gravity. When the air temperature is higher than that of the soil, the heat transfer ceases and the unit is dormant. Presented here is a general overview of applications of thermosyphons in cold regions. The original document contains color images. |
author2 |
ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB |
format |
Text |
author |
Wagner, Anna M |
author_facet |
Wagner, Anna M |
author_sort |
Wagner, Anna M |
title |
Review of Thermosyphon Applications |
title_short |
Review of Thermosyphon Applications |
title_full |
Review of Thermosyphon Applications |
title_fullStr |
Review of Thermosyphon Applications |
title_full_unstemmed |
Review of Thermosyphon Applications |
title_sort |
review of thermosyphon applications |
publishDate |
2014 |
url |
http://www.dtic.mil/docs/citations/ADA595037 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA595037 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA595037 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766165881088376832 |