EN ISO 17628:2015

Geotechnical investigation and testing - Geothermal testing - Determination of thermal conductivity of soil and rock using a borehole heat exchanger (ISO 17628:2015, Corrected version 2024-07)

A standard on geothermal testing methods is necessary because of the rapidly growing market in Europe of heat exchangers installation. Geothermal heat exchangers are used for heating and cooling and may be used in warmer and cooler areas throughout Europe. The use of geothermal energy leads to a reduction of coal and oil and therefore also of CO2 emissions. The drilling, installation of geothermal heat exchangers and testing for geothermal conductivity has to be determined by a standardised testing procedure.

Geotechnische Erkundung und Untersuchung - Geothermische Versuche - Bestimmung der Wärmeleitfähigkeit von Boden und Fels unter Anwendung von Erdwärmesonden (ISO 17628:2015, korrigierte Fassung 2024-07)

Reconnaissance et essais géotechniques - Essais géothermiques - Détermination de la conductivité thermique des sols et des roches dans les sondes géothermiques (ISO 17628:2015, Version corrigée 2024-07)

L'ISO 17628:2015 spécifie les exigences relatives à l'essai de réponse géothermique. Cet essai comprend la détermination in situ de la conductivité thermique dans un sol et une roche saturés et non saturés à l'aide d'une sonde géothermique. Pour cet essai, des liquides caloporteurs ne subissant pas de changements de phase sont utilisés.
La conductivité thermique est un paramètre important utilisé dans la conception des systèmes de stockage et d'échange thermiques.
Un essai de réponse géothermique mesure la réponse en température au forçage thermique d'une sonde géothermique ou l'extraction d'énergie thermique d'un forage. La réponse en température est liée aux paramètres thermiques du sol et du forage tels que la conductivité thermique et la résistance du forage ; elle est donc utilisée pour obtenir des estimations de ces paramètres importants.
L'ISO 17628:2015 s'applique aux sondes géothermiques installées dans des forages verticaux ou inclinés d'une profondeur courante allant jusqu'à 400 m, par exemple, et d'un diamètre allant jusqu'à 200 mm.

Geotehnično preiskovanje in preskušanje - Geotermalno preskušanje - Ugotavljanje toplotne prevodnosti zemlje in skal z uporabo vrtine toplote (ISO 17628:2015)

Standard, ki ureja geotermalne preskusne metode, je potreben zaradi hitro rastočega trga toplotnih izmenjevalnikov v Evropi. Geotermalni toplotni izmenjevalniki se uporabljajo za ogrevanje in hlajenje in se lahko uporabljajo v toplejših in hladnejših območjih v Evropi. Uporaba geotermalne energije zmanjšuje uporabo premoga in nafte ter posledično emisij CO2. Vrtanje, namestitev geotermalnih izmenjevalnikov toplote in preskušanje geotermalne prevodnosti mora biti določeno s standardiziranim preskusnim postopkom.

General Information

• Status: Published
• Publication Date: 28-Jul-2015
• Withdrawal Date: 30-Jan-2016
• ICS: 13.080.20 - Physical properties of soils
• ICS: 27.080 - Heat pumps
• ICS: 27.190 - Biological sources and alternative sources of energy
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Drafting Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 29-Jul-2015
• Due Date: 13-Nov-2015
• Completion Date: 29-Jul-2015
• Ref Project: SIST EN ISO 17628:2015 - Geotechnical investigation and testing - Geothermal testing - Determination of thermal conductivity of soil and rock using a borehole heat exchanger (ISO 17628:2015)

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2015
*HRWHKQLþQRSUHLVNRYDQMHLQSUHVNXãDQMH*HRWHUPDOQRSUHVNXãDQMH
8JRWDYOMDQMHWRSORWQHSUHYRGQRVWL]HPOMHLQVNDO]XSRUDERYUWLQHWRSORWH,62

Geotechnical investigation and testing - Geothermal testing - Determination of thermal
conductivity of soil and rock using a borehole heat exchanger (ISO 17628:2015)
Geotechnische Erkundung und Untersuchung - Geothermische Versuche - Bestimmung
der Wärmeleitfähigkeit von Boden und Fels unter Anwendung von Erdwärmesonden
(ISO 17628:2015)
Reconnaissance et essais géotechniques - Essais géothermiques - Détermination de la
conductivité thermique de sol et roche dans les sondes géothermiques (ISO
17628:2015)
Ta slovenski standard je istoveten z: EN ISO 17628:2015
ICS:
27.190 Biološki viri in drugi Biological sources and
alternativni viri energije alternative sources of energy
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 17628
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2015
ICS 93.020; 13.080.20
English Version
Geotechnical investigation and testing - Geothermal testing -
Determination of thermal conductivity of soil and rock using a
borehole heat exchanger (ISO 17628:2015)
Reconnaissance et essais géotechniques - Essais Geotechnische Erkundung und Untersuchung -
géothermiques - Détermination de la conductivité thermique Geothermische Versuche - Bestimmung der
des sols et des roches dans les sondes géothermiques Wärmeleitfähigkeit von Boden und Fels unter Anwendung
(ISO 17628:2015) von Erdwärmesonden (ISO 17628:2015)
This European Standard was approved by CEN on 23 April 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17628:2015 E
worldwide for CEN national Members.

Contents Page
European foreword .3

European foreword
This document (EN ISO 17628:2015) has been prepared by Technical Committee CEN/TC 341 “Geotechnical
Investigation and Testing”, the secretariat of which is held by BSI, in collaboration with Technical Committee
ISO/TC 182 "Geotechnics".
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at
the latest by January 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 17628:2015 has been approved by CEN as EN ISO 17628:2015 without any modification.
INTERNATIONAL ISO
STANDARD 17628
First edition
2015-07-15
Geotechnical investigation and
testing — Geothermal testing
— Determination of thermal
conductivity of soil and rock using a
borehole heat exchanger
Reconnaissance et essais géotechniques — Essais géothermiques —
Détermination de la conductivité thermique des sols et des roches
dans les sondes géothermiques
Reference number
ISO 17628:2015(E)
©
ISO 2015
ISO 17628:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2015 – All rights reserved

ISO 17628:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviations . 3
5 Installation of borehole heat exchangers . 4
5.1 Drilling rigs and ancillary equipment . 4
5.1.1 General. 4
5.1.2 Requirements for the drilling rigs and equipment . 4
5.2 Borehole heat exchangers, filling, and annular space filling materials . 5
5.2.1 Borehole heat exchanger material . 5
5.2.2 Heat transfer fluid of the borehole heat exchanger tubes . 5
5.2.3 Annular space filling material . 5
5.3 General requirements prior to installation . 6
5.3.1 Requirements on the drilling and installation site . 6
5.3.2 Selection of drilling techniques and installation methods . 6
5.3.3 Preliminary information needed before starting drilling and installation . . 6
5.3.4 Environmental requirements . 7
5.3.5 Safety requirements . 7
5.4 Execution. 7
5.4.1 Drilling . 7
5.4.2 Installation of borehole heat exchangers . 8
5.4.3 Annular space filling . 8
5.4.4 Functional testing . 9
5.4.5 Site reinstatement . . .12
6 Geothermal response testing .12
6.1 General .12
6.2 Test equipment .13
6.3 Test procedure .13
6.4 Test results.15
6.5 Evaluation of the test results .15
7 Report .16
7.1 Field report .16
7.1.1 Record of the installation of the heat exchanger tubes .17
7.1.2 Annular space filling record .17
7.1.3 Checking record .18
7.1.4 Record of measured values and test results .18
7.1.5 Record of evaluated test results .18
7.2 Report of the results .18
Annex A (informative) Example of a form for the preliminary information on the intended
installation of heat exchanger .20
Annex B (informative) Field reports .22
Annex C (informative) Example of the graphical presentation of the installed borehole heat
exchanger and the geology along the borehole .27
Bibliography .28
ISO 17628:2015(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO
...