PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Analysis of the Combined Effect of Major Influencing Parameters for Designing High Performance Single (sBHE) and Double (dBHE) U-Tube Borehole Heat Exchangers
Version 1
: Received: 28 February 2024 / Approved: 7 March 2024 / Online: 7 March 2024 (12:52:52 CET)
How to cite:
Kerme, E.D.; Fung, A.S.; Leong, W.H. Analysis of the Combined Effect of Major Influencing Parameters for Designing High Performance Single (sBHE) and Double (dBHE) U-Tube Borehole Heat Exchangers. Preprints2024, 2024030448. https://doi.org/10.20944/preprints202403.0448.v1
Kerme, E.D.; Fung, A.S.; Leong, W.H. Analysis of the Combined Effect of Major Influencing Parameters for Designing High Performance Single (sBHE) and Double (dBHE) U-Tube Borehole Heat Exchangers. Preprints 2024, 2024030448. https://doi.org/10.20944/preprints202403.0448.v1
Kerme, E.D.; Fung, A.S.; Leong, W.H. Analysis of the Combined Effect of Major Influencing Parameters for Designing High Performance Single (sBHE) and Double (dBHE) U-Tube Borehole Heat Exchangers. Preprints2024, 2024030448. https://doi.org/10.20944/preprints202403.0448.v1
APA Style
Kerme, E.D., Fung, A.S., & Leong, W.H. (2024). Analysis of the Combined Effect of Major Influencing Parameters for Designing High Performance Single (sBHE) and Double (dBHE) U-Tube Borehole Heat Exchangers. Preprints. https://doi.org/10.20944/preprints202403.0448.v1
Chicago/Turabian Style
Kerme, E.D., Alan S Fung and Wey H Leong. 2024 "Analysis of the Combined Effect of Major Influencing Parameters for Designing High Performance Single (sBHE) and Double (dBHE) U-Tube Borehole Heat Exchangers" Preprints. https://doi.org/10.20944/preprints202403.0448.v1
Abstract
In this paper, comprehensive analysis of combined effect of major influencing parameters on heat transfer in the single U-tube BHE (sBHE) and double U-tube BHE (dBHE) with two independent circuits was performed by using validated numerical heat transfer model. Geometrical parameters, such as shank spacing (with maximum, average and minimum values) and borehole diameter (large, medium and small borehole sizes) and borehole depth (shallow, average and deep borehole depths) as well as thermal conductivity of soil and grout which ranges from minimum to high value were considered. The combined impact of these parameters was included under four major cases: 1) combined effect of borehole depth, borehole size and shank spacing; 2) combined effect of borehole depth, and soil and grout thermal conductivity; 3) combined effect of soil and grout thermal conductivity and borehole size; and 4) combined effect of soil thermal conductivity, borehole size and shank spacing. Each of these major cases has nine different design options of both sBHE and dBHE. Series of results of heat transfer per unit borehole depth were generated for all the considered various cases. With the given parameters, the BHE case that provides highest heat transfer among the various cases of sBHE and dBHE were obtained.
Keywords
borehole heat exchanger; heat transfer per unit borehole depth; shank spacing; borehole size; combined impact of parameters; convective heat transfer coefficient
Subject
Engineering, Energy and Fuel Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
