Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/5597
Title: Development of thermal conductivity probes for soils and insulations
Authors: Arthur D. Little, Inc.
Wechsler, A. E.
Keywords: Thermal conductivity
Probes
Soils
Measurement
Testing equipment
Instruments
Insulating materials
Thermometers
Soil temperature
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.)) ; 182.
Description: Technical Report
Abstract: Eighteen laboratory-type and 3 field-type probes were designed, constructed and tested. Stainless steel, copper and plastic probe sheaths with epoxy resin, ceramic, or Wood's metal fillings were used with bifilar arid single or multiple wire constantan heaters, Copper-constantan thermocouples and thermistors located both within the probe and on the probe sheath were used as temperature sensors. Probes from 0.020 in. to 1/4 in. in diam. and from 3 to 24 in. in length were used. The probes were laboratory tested in dry and moist silt, gravelly sand, beaded polystyrene, and Foam-glass insulations over the temperature range from -40 to +90°F. Measurements were also made in snow, ice, insulation boards, dry and moist silt, and gravel. The results, of the tests indicate that the design and construction of probes for measurements of thermal conductivity of soils and insulating materials can be based on theoretical considerations with reasonable assurance of good probe performance and that the probes are useful and valuable for laboratory and field measurements.
Rights: Approved for public release; distribution is unlimited.
URI: http://hdl.handle.net/11681/5597
Appears in Collections:Technical Report

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