An experimental and a numerical study of horizontal earth-air heat exchanger in a hot climate

被引：7

作者：

Benhamza, Mohamed El Ghazali ^{[1
]}

Brima, Abdelhafid ^{[1
]}

Houda, Saddok ^{[2
]}

Moummi, Noureddine ^{[1
]}

机构：

[1] Laboratoire de Génie Mécanique, Mohamed Khider University, Biskra, Algeria

[2] Department of Architectural Engineering, Mohamed Khider University, Biskra, Algeria

来源：

International Journal of Sustainable Engineering | 2017年 / 10卷 / 02期

关键词：

Computational fluid dynamics - Geothermal energy - Air - Earth (planet) - Energy utilization;

D O I：

10.1080/19397038.2016.1267817

中图分类号：

学科分类号：

摘要：

Earth-air heat exchangers (EAHE) are devices used in the geothermal technique in order to reduce energy consumption in buildings. In this study, a simulation was conducted through the computational fluid dynamics platform FLUENT 6.3 for the prediction of thermal performance of the EAHE that describes the variation of the air temperature inside the tube. For this, it was necessary to design the heat exchanger while respecting the design and the actual dimensions of the experimental set-up, and stating that the temperature of the wall of the horizontal tube of the exchanger is equal to that of ground at 3 m depth. It should be noted that in assessing the temperature along the two sections vertical (input and output) of the exchanger, opting for a function (UDF) the user define function. Finally, noting a good agreement between both experimental and numerical study, and showing that a significant reduction in temperature at the outlet of the exchanger to a difference of 20 °C, confirming the effectiveness of the heat exchanger. © 2017 Informa UK Limited, trading as Taylor & Francis Group.

引用

页码：82 / 89