COOLING OF AN UNDERSNOW CAMP
An investigation was conducted at Camp Century, Greenland, to study the feasibility of using air wells to cool undersnow structures in the arctic during the summer months. It was found that the air well is a practical and effective means of providing a -20 C air supply at volumetric flow rates of 12...
| Main Authors: | , |
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| Format: | Text |
| Language: | English |
| Published: |
1962
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| Subjects: | |
| Online Access: | http://www.dtic.mil/docs/citations/AD0281709 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0281709 |
| Summary: | An investigation was conducted at Camp Century, Greenland, to study the feasibility of using air wells to cool undersnow structures in the arctic during the summer months. It was found that the air well is a practical and effective means of providing a -20 C air supply at volumetric flow rates of 1200 to 1700 cu ft/min. The extent and rate of warming of the snow beneath the trench floor by heat exchange between the air and the snow foundation depends upon trench air temperature, fan capacity, fan arrangement, and casing length. For example, in a well cased to a depth of 17.5 ft and equipped with a 5 hp fan drawing in air at a rate of 1700 cu ft/min, the maximum warming was 12.5 C during a 42-day period. Snow temperature differences of about 7 C were found between similar trenches with and without a fan installation. The minimum permissible distance between two adjacent fans to eliminate overlap in warming up the snow foundation is approximately 80 ft. (Author) |
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