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10.3390/pr11010051
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Article

Evaluation of the Performance of a Heat Pipe for Pre-Frozen Soil around a Solar Support by a Numerical Method

by
Dong Li
1,
Xinpeng Yang
1,
Xuefeng Zhao
2,*,
Ruitong Yang
1,*,
Lan Meng
2 and
Shaojie Fu
3
1
School of Architecture and Civil Engineering, Northeast Petroleum University, Fazhan Lu Street, Daqing 163318, China
2
Daqing Oilfield Co., Ltd., Zhongyuan Lu Street, Daqing 163712, China
3
Qinghai Huanghe Photovoltaic System Design Consulting Co., Ltd., Kunlundong Lu Street, Xining 810000, China
*
Authors to whom correspondence should be addressed.
Processes 2023, 11(1), 51; https://doi.org/10.3390/pr11010051
Submission received: 30 November 2022 / Revised: 21 December 2022 / Accepted: 22 December 2022 / Published: 26 December 2022
(This article belongs to the Topic CO2 Capture and Renewable Energy)
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Abstract

The base of solar collector systems is usually installed in soil that contains moisture. In cold regions, due to the low ambient temperature, the moisture in the soil freezes, creating a risk of frost heave. This study analyzed the frost heave mechanism of power transmission and transformation foundation, clarified the factors affecting soil frost heave and the way to solve soil layer frost heave, and proposed the use of heat transfer elements to pre-frozen soil layers to prevent the foundation of the solar collector system from freezing. A numerical model of the ground heat exchange pipes in soil was established. The effects of different soil types, soil moisture content, and the effective radius and operating time on the heat transfer performance of the system were investigated by the verified numerical model. The results show that the heat pipe pre-freezing technology can reduce the drop in soil temperature, thereby increasing the temperature difference between the ground heat exchange pipe and the far-field soil. In terms of the ability to delay the decline in soil temperature, reducing the water content and selecting certain clays can increase the degree and speed of the drop in soil temperature.
Keywords: frozen soil; heat pipe; heat transfer; porous media frozen soil; heat pipe; heat transfer; porous media

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MDPI and ACS Style

Li, D.; Yang, X.; Zhao, X.; Yang, R.; Meng, L.; Fu, S. Evaluation of the Performance of a Heat Pipe for Pre-Frozen Soil around a Solar Support by a Numerical Method. Processes 2023, 11, 51. https://doi.org/10.3390/pr11010051

AMA Style

Li D, Yang X, Zhao X, Yang R, Meng L, Fu S. Evaluation of the Performance of a Heat Pipe for Pre-Frozen Soil around a Solar Support by a Numerical Method. Processes. 2023; 11(1):51. https://doi.org/10.3390/pr11010051

Chicago/Turabian Style

Li, Dong, Xinpeng Yang, Xuefeng Zhao, Ruitong Yang, Lan Meng, and Shaojie Fu. 2023. "Evaluation of the Performance of a Heat Pipe for Pre-Frozen Soil around a Solar Support by a Numerical Method" Processes 11, no. 1: 51. https://doi.org/10.3390/pr11010051

APA Style

Li, D., Yang, X., Zhao, X., Yang, R., Meng, L., & Fu, S. (2023). Evaluation of the Performance of a Heat Pipe for Pre-Frozen Soil around a Solar Support by a Numerical Method. Processes, 11(1), 51. https://doi.org/10.3390/pr11010051

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