Thermal model tests for probe conduction errors in ground- temperature measurement

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TypeArticle
Journal titleGéotechnique
ISSN0016-8505
Volume13
Issue3
Pages241249; # of pages: 9
Subjectthermal probes; error analysis; surface temperature; thermal conduction; calcul d'erreur; temperature superficielle; conduction thermique
AbstractSeveral reduced scale models of probes for ground- temperature measurements were tested in the laboratory to determine heat conduction errors. Actual field conditions were simulated by applying a sudden temperature change to the model ground surface, and temperatures at equivalent field depths of up to several feet were measured. The size scale of the models was nominally 1:10 and times of 1 or 2 hours represented 4 to 8 days in the field. With probes of conventional design containing bundles of thermocouples the errors were found to range between approximately 1 degree to 3 degrees F for depths less than about 3 ft. For most probes, errors of less than 0.1 degree F would be expected for depths greater than 5 ft.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-194
NRC number7570
206
NPARC number20374577
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Record identifier76695a72-dad1-4a1f-a20a-2c08a191f128
Record created2012-07-23
Record modified2016-05-09
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