Off-campus South Dakota State University users: To download campus access theses, please use the following link to log into our proxy server with your South Dakota State University ID and password.
Non-South Dakota State University users: Please talk to your librarian about requesting this thesis through interlibrary loan.
Thesis - University Access Only
Master of Science (MS)
Department / School
The focus of this research was to determine the relative magnitude of thermal contact conductance at the soil-pipe interface for typical soils. Soils have various physical, thermal and water holding properties which would vary the value of thermal contact conductance when used around buried heat exchangers. Knowledge of those properties which have the greatest effect on thermal contact conductance can be used to determine what soil types make good backfill materials around buried heat exchangers. The following sub-objectives were identified and completed to achieve the main objective: - A thermal probe was designed and constructed to measure thermal contact conductance between the surface of the probe and the soil packed around it. - A test procedure which simulated GSHP operation was utilized to determine the effect of long term operation in the heat dissipation mode on thermal contact conductance. - Thermal contact conductance tests were performed on a broad range of soils and measured thermal contact conductance values were compared over a range of applied thermal load, initial soil water content, and soil dry density.
Library of Congress Subject Headings
Heat -- Conduction
Soils -- Thermal properties
Soils -- Effect of temperature on
South Dakota State University
Springman, Anthony, "Thermal Contact Conductance Between a Heated Pipe and Various Soil Textures" (1993). Electronic Theses and Dissertations. 6010.