3-D simulation of heat transfer rate in geothermal pile-foundation heat exchangers with spiral pipe configuration

被引：94

作者：

Bezyan, Behrad ^{[1
]}

Porkhial, Soheil ^{[1
]}

Mehrizi, Abbasali Aboui ^{[2
]}

机构：

[1] Islamic Azad Univ, Karaj Branch, Dept Mech Engn, Karaj, Iran

[2] Renewable Energy Org Iran SUNA, Dept Geothermal Energy, Tehran, Iran

来源：

APPLIED THERMAL ENGINEERING | 2015年 / 87卷

关键词：

Geothermal energy; Ground-source heat pump; Energy pile; Spiral heat pipes; Renewable energy; THERMAL PERFORMANCE; ENERGY PILES; SOURCE MODEL; BOREHOLE; PUMP; TEMPERATURE;

D O I：

10.1016/j.applthermaleng.2015.05.051

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper investigates a recently developed method of pipe construction with vertical Spiral-shaped configuration in geothermal pile-foundation heat exchangers for analyzing thermal performance compare to other pipe configurations such as 1-U-shaped and 1-W-shaped in cooling mode of water. Heat transfer rate and temperature distribution in pile-foundation have been simulated and computed. Three pitch sizes for spiral configuration have been considered, simulated and compared to each other for detecting the best performance in heat transfer rate. Furthermore, comparison between Spiral-shaped, 1-U-shaped and 1-W-shaped has been conducted for recognizing the best performance in heat transfer rate and efficiency. Spiral-shaped pile-foundations have been simulated in large scale plant for acquiring better performance in cooling mode with two different connections, serially and parallel. The best pipe configuration inside the pile-foundation regarding the results is spiral-shaped and the best connection is serial connection. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：655 / 668

页数：14

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