Detail publikace
Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
Yang, L. Zhang, B. Klemeš, J.J. Liu, J. Song, M. Wang, J.
Anglický název
Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
Many researchers numerically investigated U-tube underground heat exchanger using a two-dimensional simplified pipe. However, a simplified model results in large errors compared to the data from construction sites. This research is carried out using a three-dimensional full-size model. A model validation is conducted by comparing with experimental data in summer. This article investigates the effects of fluid velocity and buried depth on the heat exchange rate in a vertical U-tube underground heat exchanger based on fluid-structure coupled simulations. Compared with the results at a flow rate of 0.4 m/s, the results of this research show that the heat transfer per buried depth at 1.0 m/s increases by 123.34%. With the increase of the buried depth from 80 to 140 m, the heat transfer per unit depth decreases by 9.72%. © 2021 Li Yang et al., published by De Gruyter 2021.
Anglický abstrakt
Many researchers numerically investigated U-tube underground heat exchanger using a two-dimensional simplified pipe. However, a simplified model results in large errors compared to the data from construction sites. This research is carried out using a three-dimensional full-size model. A model validation is conducted by comparing with experimental data in summer. This article investigates the effects of fluid velocity and buried depth on the heat exchange rate in a vertical U-tube underground heat exchanger based on fluid-structure coupled simulations. Compared with the results at a flow rate of 0.4 m/s, the results of this research show that the heat transfer per buried depth at 1.0 m/s increases by 123.34%. With the increase of the buried depth from 80 to 140 m, the heat transfer per unit depth decreases by 9.72%. © 2021 Li Yang et al., published by De Gruyter 2021.
Klíčová slova anglicky
buried depth; computational fluid dynamics; fluid velocity; ground source heat pump; U-tube heat exchanger
Vydáno
01.01.2021
Nakladatel
De Gruyter
ISSN
2391-5471
Ročník
1
Číslo
19
Strany od–do
327–330
Počet stran
4
BIBTEX
@article{BUT172044,
author="Jiří {Klemeš} and Jin {Wang},
title="Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger",
year="2021",
volume="1",
number="19",
month="January",
pages="327--330",
publisher="De Gruyter",
issn="2391-5471"
}