Benchmark for Performance: Geothermal Applications in Lincoln Public Schools

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Description

Vertical-bore, geothermal heat pumps (GHPs) have been providing heating and cooling to four new elementary schools located in Lincoln, Nebraska since 1995. According to representatives of the local utility and school district, the systems are providing a comfortable, complaint-free environment with utility costs that are nearly half of that of other schools in the district. Performance data collected from on-site energy management systems and district billing and utility records for all fifty schools in the Lincoln district indicate that only five consume less energy than the best performing GHP school; however these five cool less than 10% of their total ... continued below

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27 p.

Creation Information

Durfee, D.J.; Hughes, P.J.; Martin, M.A.; Sharp, A.T. & Shonder, J.A. June 19, 1999.

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Description

Vertical-bore, geothermal heat pumps (GHPs) have been providing heating and cooling to four new elementary schools located in Lincoln, Nebraska since 1995. According to representatives of the local utility and school district, the systems are providing a comfortable, complaint-free environment with utility costs that are nearly half of that of other schools in the district. Performance data collected from on-site energy management systems and district billing and utility records for all fifty schools in the Lincoln district indicate that only five consume less energy than the best performing GHP school; however these five cool less than 10% of their total floor area, while the GHP schools cool 100% of their floor area. When compared to other new schools (with similar ventilation loads), the GHP schools used approximately 26% less source energy per square foot of floor area. Variations in annual energy performance are evident among the four GHP schools, however, together they still consume less source energy than 70% of all schools in the district. These variations are most likely due to operational differences rather than installed equipment, building orientation, or environmental (bore field) conditions.

Physical Description

27 p.

Notes

OSTI as DE00006262

Medium: P; Size: 27 pages

Source

  • ASHRAE Annual Meeting, Seattle, WA (US), 06/19/1999--06/23/1999

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  • Report No.: ORNL/CP-102696
  • Report No.: EB 40 02 00 0
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 6262
  • Archival Resource Key: ark:/67531/metadc695964

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  • June 19, 1999

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 10, 2017, 6:38 p.m.

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Durfee, D.J.; Hughes, P.J.; Martin, M.A.; Sharp, A.T. & Shonder, J.A. Benchmark for Performance: Geothermal Applications in Lincoln Public Schools, article, June 19, 1999; Tennessee. (digital.library.unt.edu/ark:/67531/metadc695964/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.