OG&E Ground Source Heat Exchanger Study

Horizontal Borehole Study - 2010

Ten horizontal boreholes have been drilled to determine if thermal performance varies between boreholes with bentonite grout and those without grout. If grout is not used, drilling mud and cuttings remain in the borehole. All the boreholes pass through clay soil...
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Richard A. Beiera and William A. Hollowayb
aMechanical Engineering Technology Department and bElectrical Engineering Technology Department, Oklahoma State University
rick.beier@okstate.edu

Purging and Air Removal - 2009

Ground source heat pump systems (GSHP) often use closed loops to couple the ground with the heat pump as illustrated in Figure 1. Plastic pipe may be installed in vertical boreholes, horizontal trenches, or bodies of water. The chosen configuration for a ...
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Richard A. Beier
Mechanical Engineering Technology Department, Oklahoma State University
rick.beier@okstate.edu

Soil Thermal Conductivity Tests - 2008

The design of ground loops for heat pump systems depends on the thermal conductivity of the soil and rock that surrounds the ground heat exchanger. Thermal conductivity is a measure of the capacity of a material to conduct heat. A larger soil...
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Richard A. Beier
Mechanical Engineering Technology Department, Oklahoma State University
rick.beier@okstate.edu