Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger

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 valid...

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Autores principales:	Yang Li, Zhang Bo, Klemeš Jiří Jaromír, Liu Jie, Song Meiyu, Wang Jin
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	buried depth computational fluid dynamics fluid velocity ground source heat pump u-tube heat exchanger Physics QC1-999
Acceso en línea:	https://doaj.org/article/45d0205a43ba407fa4d74ab95e92c231
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id	oai:doaj.org-article:45d0205a43ba407fa4d74ab95e92c231
record_format	dspace
spelling	oai:doaj.org-article:45d0205a43ba407fa4d74ab95e92c2312021-12-05T14:11:02ZEffect of buried depth on thermal performance of a vertical U-tube underground heat exchanger2391-547110.1515/phys-2021-0033https://doaj.org/article/45d0205a43ba407fa4d74ab95e92c2312021-06-01T00:00:00Zhttps://doi.org/10.1515/phys-2021-0033https://doaj.org/toc/2391-5471Many 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%.Yang LiZhang BoKlemeš Jiří JaromírLiu JieSong MeiyuWang JinDe Gruyterarticleburied depthcomputational fluid dynamicsfluid velocityground source heat pumpu-tube heat exchangerPhysicsQC1-999ENOpen Physics, Vol 19, Iss 1, Pp 327-330 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	buried depth computational fluid dynamics fluid velocity ground source heat pump u-tube heat exchanger Physics QC1-999
spellingShingle	buried depth computational fluid dynamics fluid velocity ground source heat pump u-tube heat exchanger Physics QC1-999 Yang Li Zhang Bo Klemeš Jiří Jaromír Liu Jie Song Meiyu Wang Jin Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
description	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%.
format	article
author	Yang Li Zhang Bo Klemeš Jiří Jaromír Liu Jie Song Meiyu Wang Jin
author_facet	Yang Li Zhang Bo Klemeš Jiří Jaromír Liu Jie Song Meiyu Wang Jin
author_sort	Yang Li
title	Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
title_short	Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
title_full	Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
title_fullStr	Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
title_full_unstemmed	Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger
title_sort	effect of buried depth on thermal performance of a vertical u-tube underground heat exchanger
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/45d0205a43ba407fa4d74ab95e92c231
work_keys_str_mv	AT yangli effectofburieddepthonthermalperformanceofaverticalutubeundergroundheatexchanger AT zhangbo effectofburieddepthonthermalperformanceofaverticalutubeundergroundheatexchanger AT klemesjirijaromir effectofburieddepthonthermalperformanceofaverticalutubeundergroundheatexchanger AT liujie effectofburieddepthonthermalperformanceofaverticalutubeundergroundheatexchanger AT songmeiyu effectofburieddepthonthermalperformanceofaverticalutubeundergroundheatexchanger AT wangjin effectofburieddepthonthermalperformanceofaverticalutubeundergroundheatexchanger
_version_	1718371471580987392

Effect of buried depth on thermal performance of a vertical U-tube underground heat exchanger

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