Call number:
ZSP-202-334
In:
Research report
Description / Table of Contents:
CONTENTS: Abstract. - Preface. - List of symbols and associated dimensions. - Introduction and purpose. - Site characteristics. - Outline of study scheme. - Analysis. - Heat conduction to the drill hole. - Heat transfer between conduit wall and coolant. - Heat transfer between surface pipe and air. - Total heat extraction process. - Example calculations. - Estimate of basal water thickness and flow rates. - Summary of investigations of multiple-hole. - Literature cited.
Description / Table of Contents:
A scheme for cooling the lower portion of the edge of the Greenland ice sheet, which abuts a potential mining operation, is examined. The magnitude of cooling which may be accomplished by drilling a series of holes about the periphery of the mine site is determined as a function of hole size, spacing and time. Refrigeration is accomplished by pumping a coolant downhole in a central pipe, then uphole in an annulus between the pipe and hole wall, and then through a thin-walled pipe exposed to the surface climate above the ice sheet. It was found possible to achieve a temperature change in the ice of the order of -1°C with hole spacings and pumping requirements which are considered reasonable. Other effects are briefly examined and include an estimate of the basal water thickness and flow rates.
Type of Medium:
Series available for loan
Pages:
vii, 19 Seiten
,
Illustrationen
Series Statement:
Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 334
URL:
http://www.worldcat.org/oclc/227384248
Language:
English
Branch Library:
AWI Library
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