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Title: Refrigeration of a pipe pile by air circulation
Authors: Reed, Robert E.
Keywords: Pilings
Pile foundations
Pile structures
Foundation construction
Permafrost regions
Frozen soils
Frozen ground
Heat transfer
Heat transmission
Soil freezing
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 156.
Description: Technical Report
Abstract: The data obtained from this investigation indicate that the circulation of cold ambient air through pipe piles can be effective in lowering the temperature of frozen and unfrozen soil. The system created a concentrated cooling effect immediately adjacent to the pile during exhaust fan operation. This concentration could effectively produce the desired heat removal for freezeback of hollow piles installed in preaugered holes backfilled with slurry. Site conditions, the test installation, and the test procedure are described, and the temperature data are given. Using this system in a pile foundation would provide an efficient and economical method of assisting the freezeback of piles during the winter months. The advantages over commonly used brine or oil circulants include the following: air circulation is relatively inexpensive, no recirculation is required, and no heat exchanger is needed to remove heat from the circulant.
Appears in Collections:CRREL Technical Report

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