Numerical Validation of a New Analytical Solution for Helical (Earth-Basket) Type Ground Heat Exchangers-Reference-Cited by-同舟云学术

Numerical Validation of a New Analytical Solution for Helical (Earth-Basket) Type Ground Heat Exchangers

Published:2023-05-08 Issue:5 Volume:11 Page:1418
ISSN:2227-9717
Container-title:Processes
language:en
Short-container-title:Processes

Author:

Reichl Christoph¹^ORCID,Witte Henk J. L.²

Affiliation:

1. AIT Austrian Institute of Technology GmbH, Center for Energy, Sustainable Thermal Energy Systems, Giefinggasse 4, 1210 Vienna, Austria

2. Groenholland Geo Energy Systems, Valschermkade 26, 1059 Amsterdam, The Netherlands

Abstract

In this paper, we show that an analytical solution based on the Finite Line Source and G-function approach is both sufficiently fast and accurate for design calculations of ground heat exchangers with a complex (spiral) geometry. Detailed validations were performed for the steady-state and transient responses of analytical models with different time scales (10 h and 250 h). A comparison with a detailed computational fluid dynamics model (Ansys Fluent) and the analytical method for different boundary conditions showed a very good agreement (maximum root mean square error) smaller than 0.25 K.

Funder

European Union’s H2020 programme

Publisher

MDPI AG

Subject

Process Chemistry and Technology,Chemical Engineering (miscellaneous),Bioengineering

Link

https://www.mdpi.com/2227-9717/11/5/1418/pdf

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