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Renewable energy technologies for federal facilities: Geothermal heat pump

Description: This sheet summarizes information on geothermal heat pumps (GHPs), which extracts heat from the ground in the winter and transfers heat to the ground in the summer. More than 200,000 GHPs are operating in US; they can reduce energy consumption and related emissions by 23 to 44% compared to air-source heat pumps. Opportunities for use of GHPs, requirements, and cost are described. Important terms are defined.
Date: May 1, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced geothermal foam drilling systems (AFS) -- Phase 1 final report, Part 1

Description: An advanced coiled-tubing foam drilling system is being developed where two concentric strings of coiled tubing are used to convey water and air to the hole bottom where they are mixed together to produce foam for underbalanced drilling. This system has the potential to significantly reduce drilling costs by increasing drilling rates (due to the motor being powered by water), and reducing compressor and nitrogen costs (due to lower gas pressures and volumes).
Date: June 30, 1999
Creator: Maurer, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal Heat Pumps as a Cost Saving and Capital Renewal Too!

Description: An independent evaluation of the Fort Polk, Louisiana energy savings performance contract (ESPC) has verified the financial value of geothermal heat pump (GHP)-centered ESPCS to the federal government. The Department of Energy (DOE) Federal Energy Management Program (FEMP) has responded by issuing an RFP for the "National GHP-Technology-Specific Super ESPC Procurement." Federal agency sites anywhere in the nation will be able to implement GHP-centered ESPC projects as delivery orders against th… more
Date: November 6, 1998
Creator: Hughes, P.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hot Dry Rock: A Climate Change Action Opportunity for Industry

Description: Geothermal resources in the form of heat found in rock that is hot but is not in contact with sufficient mobile fluid to transport that heat to the surface are a large, as yet virtually unexploited, source of clean energy. The technology to extract useful amounts of energy from this ubiquitous hot dry rock (HDR) geothermal resource has been under development for more than twenty years. During the last two years, flow testing at the Fenton Hill HDR pilot facility in New Mexico has answered many … more
Date: July 1, 1994
Creator: Duchane, David V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Next generation geothermal power plants. Draft final report

Description: The goal of this project is to develop concepts for the next generation geothermal power plant(s) (NGGPP). This plant, compared to existing plants, will generate power for a lower levelized cost and will be more competitive with fossil fuel fired power plants. The NGGPP will utilize geothermal resources efficiently and will be equipped with contingencies to mitigate the risk of reservoir performance. The NGGPP design will attempt to minimize emission of pollutants and consumption of surface wat… more
Date: December 1, 1994
Creator: Brugman, John; Hattar, John; Nichols, Kenneth & Esaki, Yuri
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Study of Production/Injection Data from Slim Holes and Large-Diameter Wells at the Takigami Geothermal Field, Kyushu, Japan

Description: Production and injection data from nine slim holes and sixteen large-diameter wells at the Takigami Geothermal Field, Kyushu, Japan were analyzed in order to establish relationships (1) between injectivity and productivity indices, (2) between productivity/injectivity index and borehole diameter, and (3) between discharge capacity of slim holes and large-diameter wells. Results are compared with those from the Oguni and Sumikawa fields. A numerical simulator (WELBOR) was used to model the avail… more
Date: November 1, 1996
Creator: Garg, S.K.; Combs, J.; Azawa, Fumio & Gotoh, Hiroki
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Heating and Cooling Equipment Selection

Description: This is one of a series of technology fact sheets created to help housing designers and builders adopt a whole-house design approach and energy efficient design practices. The fact sheet helps people choose the correct equipment for heating and cooling to reduce initial costs, increase homeowner comfort, increase operating efficiency, and greatly reduce utility costs.
Date: January 1, 2002
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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