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A new modelling approach for piled and other ground heat exchanger applications

A new modelling approach for piled and other ground heat exchanger applications
A new modelling approach for piled and other ground heat exchanger applications
Pile heat exchangers have an increasing role to play in the delivery of renewable heating and cooling energy. Traditionally the thermal design of ground heat exchangers has relied upon analytical approaches which take a relatively simple approach to the inside of the heat exchanger. This approach is justified while the heat exchanger diameter remains small. However, as larger diameter piled foundations are used as heat exchangers, the transient heat transfer processes operating within the pile become more important. To increase our understanding of these processes and ultimately lead to improved thermal design approaches for pile heat exchangers it is important to examine the heat transfer within the pile in detail. To accomplish this, a new numerical approach has been implemented within the finite element software ABAQUS. Coupling of the convective heat transfer due to fluid flow within the heat transfer pipes and the heat transfer by conduction within the pile concrete is the most important facet of the model. The resulting modelling approach, which is ready to generalise to other geothermal applications and to assess thermo-mechanical couplings, has been validated against a multi-stage thermal response test carried out on a test pile in London Clay.
Cecinato, F.
39ce6c19-7429-465e-a769-d9b500a496e6
Loveridge, F.
fb5b7ad9-d1b8-40d3-894b-bccedf0e8a77
Gajo, A.
03ed53e9-b08b-4988-a377-a78db19f9365
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Cecinato, F.
39ce6c19-7429-465e-a769-d9b500a496e6
Loveridge, F.
fb5b7ad9-d1b8-40d3-894b-bccedf0e8a77
Gajo, A.
03ed53e9-b08b-4988-a377-a78db19f9365
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c

Cecinato, F., Loveridge, F., Gajo, A. and Powrie, W. (2015) A new modelling approach for piled and other ground heat exchanger applications. XVI European Conference for Soil Mechanics and Geotechnical Engineering, Edinburgh, United Kingdom. 13 - 17 Sep 2015. 6 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Pile heat exchangers have an increasing role to play in the delivery of renewable heating and cooling energy. Traditionally the thermal design of ground heat exchangers has relied upon analytical approaches which take a relatively simple approach to the inside of the heat exchanger. This approach is justified while the heat exchanger diameter remains small. However, as larger diameter piled foundations are used as heat exchangers, the transient heat transfer processes operating within the pile become more important. To increase our understanding of these processes and ultimately lead to improved thermal design approaches for pile heat exchangers it is important to examine the heat transfer within the pile in detail. To accomplish this, a new numerical approach has been implemented within the finite element software ABAQUS. Coupling of the convective heat transfer due to fluid flow within the heat transfer pipes and the heat transfer by conduction within the pile concrete is the most important facet of the model. The resulting modelling approach, which is ready to generalise to other geothermal applications and to assess thermo-mechanical couplings, has been validated against a multi-stage thermal response test carried out on a test pile in London Clay.

Text
2015 Cecinato Loveridge ECSMGE final.pdf - Accepted Manuscript
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More information

Published date: September 2015
Venue - Dates: XVI European Conference for Soil Mechanics and Geotechnical Engineering, Edinburgh, United Kingdom, 2015-09-13 - 2015-09-17
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 373408
URI: https://eprints.soton.ac.uk/id/eprint/373408
PURE UUID: b11fe75b-d26a-4152-9016-1075c06e5161
ORCID for F. Loveridge: ORCID iD orcid.org/0000-0002-6688-6305
ORCID for W. Powrie: ORCID iD orcid.org/0000-0002-2271-0826

Catalogue record

Date deposited: 30 Jan 2015 11:15
Last modified: 17 Jul 2019 20:41

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