Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Thermal Response Test (TRT) State-of-the art 2011: IEA ECES ANNEX 21
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0001-7144-9778
2011 (English)Report (Refereed)
Abstract [en]

Proper design of ground heat exchangers in ground source heat pump systemsrequires a good estimate of the thermal conductivity of the ground to avoid oversizing or under-sizing of the ground heat exchanger. A good estimate of thethermal conductivity is also needed when designing a BTES (Borehole ThermalEnergy Storage) system. The ground thermal properties may be measured at aspecific location (in situ) using what is usually referred to as a thermal responsetest (TRT). In such tests, a heat injection or extraction (often at constant rate) isimposed on a test borehole. The resulting temperature response is used todetermine the ground thermal conductivity, and to test the performance ofboreholes. Since the initial mobile test rigs were built in 1995 in Sweden and theU.S.A., this technology has spread to an increasing number of countries.Within the framework of the International Energy Agency (IEA), and theImplementing Agreement on Energy Storage through Energy Conservation(ECES), the overall objectives of the international co-operation project Annex 21“Thermal Response Test” were to compile TRT experiences worldwide in order to identify problems; carry out further development; disseminate gained knowledge; promote the technology.Current report is the result of the work within the Annex 21 Subtask 1 and gives a summary of known thermal response testing activities in the world and the state-of-the-art of the technology until December 2011.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2011. , 40 p.
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-25055Local ID: d9912198-c418-4650-a8e4-3fbfc3c722d6OAI: oai:DiVA.org:ltu-25055DiVA: diva2:998107
Note
Godkänd; 2011; Bibliografisk uppgift: This report is part of the final report of IEA ECES ANNEX 21 on Thermal Response Test (TRT), November 2013. http://www.iea-eces.org/annexes/completed-annexes/annex-21.html ; 20150122 (bon)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

Open Access in DiVA

fulltext(1945 kB)36 downloads
File information
File name FULLTEXT01.pdfFile size 1945 kBChecksum SHA-512
b3cc4d9478c04d238a3707c0f502b19c1867d60661f512f0c3c75ce8078305407c5b892b9e06db28e12d334695ddbd068d199779e11b664da75139980860e5b2
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Nordell, Bo
By organisation
Architecture and Water
Water Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 36 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 76 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf