Version 1
: Received: 17 April 2024 / Approved: 17 April 2024 / Online: 18 April 2024 (11:06:32 CEST)
How to cite:
Wang, R.; Shi, M.; Yu, J.; Ren, W.; Yan, G.; Zhu, K.; Yin, Z.; Gao, S. Research on The Heat Transfer Model of Double U-pipe Ground Heat Exchanger Based on In-Situ Testing. Preprints2024, 2024041189. https://doi.org/10.20944/preprints202404.1189.v1
Wang, R.; Shi, M.; Yu, J.; Ren, W.; Yan, G.; Zhu, K.; Yin, Z.; Gao, S. Research on The Heat Transfer Model of Double U-pipe Ground Heat Exchanger Based on In-Situ Testing. Preprints 2024, 2024041189. https://doi.org/10.20944/preprints202404.1189.v1
Wang, R.; Shi, M.; Yu, J.; Ren, W.; Yan, G.; Zhu, K.; Yin, Z.; Gao, S. Research on The Heat Transfer Model of Double U-pipe Ground Heat Exchanger Based on In-Situ Testing. Preprints2024, 2024041189. https://doi.org/10.20944/preprints202404.1189.v1
APA Style
Wang, R., Shi, M., Yu, J., Ren, W., Yan, G., Zhu, K., Yin, Z., & Gao, S. (2024). Research on The Heat Transfer Model of Double U-pipe Ground Heat Exchanger Based on In-Situ Testing. Preprints. https://doi.org/10.20944/preprints202404.1189.v1
Chicago/Turabian Style
Wang, R., Zhiqiang Yin and Shujie Gao. 2024 "Research on The Heat Transfer Model of Double U-pipe Ground Heat Exchanger Based on In-Situ Testing" Preprints. https://doi.org/10.20944/preprints202404.1189.v1
Abstract
The Double U-pipe ground heat exchanger, recognized for its straightforward process, cost-effectiveness, high heat exchange efficiency, and low thermal resistance, stands as the predominant ground heat exchanger type in today's shallow geothermal energy development and utilization. Recent years have seen significant research into the heat transfer influencing factors and heat exchange performance of Double U-pipe ground heat ex-changers via experimental testing methods. Yet, studies integrating numerical simulation with in-situ testing have been less frequent. Drawing on the cylindrical heat source model theory and the outcomes of regional in-situ thermal response tests, this paper develops a Double U-pipe ground heat transfer model by establishing physical, mathematical, and heat transfer geometric models. It assesses the impact of varying inlet temperatures, flow rates, and initial ground temperatures on heat exchange efficiency under heating conditions. The results validate the precision of the double U-pipe ground heat exchanger model based on in-situ testing. They show that enhancing the temperature differential between the inlet and initial temperatures, elevating the initial ground temperature, and moderately increasing the flow rate can boost the system's heat exchange efficiency.
Keywords
In-situ testing; Double U-pipe ground heat exchanger; Heat transfer model; Shallow geothermal energy
Subject
Environmental and Earth Sciences, Geophysics and Geology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
