Study on Temperature Uniformity of Geothermal System Based on Micro Heat Pipe Array in Tibet

Li Wan ； Zewei Pu ； Min Wu ； QIMICIREN ； SANGYONGLAMU

《International Core Journal of Engineering》 6卷10期 (2020/10) Pp. 289-295

https://doi.org/10.6919/ICJE.202010_6(10).0043

摘要

In this paper, a special-shaped tube is used to enhance the heat transfer performance between the evaporation section and hot water of the micro heat pipe array, and the temperature uniformity of the ground heating system of the micro heat pipe array is studied experimentally. The results show that the temperature uniformity of the longitudinal surface of the micro heat pipe array is good, and the temperature difference between the evaporation section and the water supply is 0.2 ~ 0.8℃; The non-uniformity of temperature distribution in the transverse plane increases with the increase of water supply temperature. At the same time, the maximum temperature difference is 2.7-4.6℃, and the average difference between the peak temperature and the valley temperature is 2.3-4.3℃. Therefore, the temperature uniformity of the whole micro heat pipe array is poor. The temperature gradients in the lower and upper layers of the room increase with the increase of water supply temperature and indoor height, respectively. At the same time, for the vertical temperature distribution of indoor air, the higher the water supply temperature, the more obvious the vertical temperature of indoor air increases with the increase of flow rate.

關鍵字

Tibet ； Micro heat pipe array ； Temperature uniformity in longitudinal plane ； Temperature uniformity of transverse plane

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