Simulation of heat stabilizer with a distributed refrigerant supply to the outer surface

Author:

Gilmanov Alexander Ya.1,Kim Andrey S.2,Shevelev Alexander P.1

Affiliation:

1. University of Tyumen

2. Alyans

Abstract

To prevent the breaking of buildings in the cryolithozone due to thawing of permafrost soil due to thermal load from these objects, it is necessary to use heat stabilizers. Two-phase passive thermosyphons are widely used among them. To increase the efficiency of such device, a design of a heat stabilizer with a distributed refrigerant supply to the outer surface is proposed. Determining the optimal operating parameters of such device is impossible without a stage of modeling heat and mass transfer. This determines the purpose of the study — the calculation of the temperature distribution in the ground with such heat stabilizer. A calculation is carried out using physico-mathematical model of it with three related tasks: 1) description of the movement of liquid refrigerant through the inner tube of the thermosyphon; 2) calculation of the upward flow of refrigerant in the gap between the outer tube and the segments of the flow separator; 3) calculation of conductive heat transfer in the heat stabilizer-soil system. The modeling is based on the approaches of non-isothermal multiphase mechanics and thermophysics. The temperature profile was calculated in the gap between the flow-separating device consisting of four segments and the heat stabilizer pipe, as well as in the soil at 1 m from the surface of the thermosyphon. The proposed model makes it possible to determine the radial temperature distribution consistent with practical data with an accuracy of 90%. It was found that the use of such separating device can increase the efficiency of reducing soil temperature by 20%.

Publisher

Tyumen State University

Reference24 articles.

1. Ananiev, V. V. (2015). Modeling two-phase thermosiphon. Reshetnevskie chteniya, 1, 62–65. [In Russian]

2. Valieva, L. E. (2016). Mathematical modeling of the operating modes of a two-phase thermosyphon under conditions of geothermal energy extraction. In High technology: Research and applications-2016: Proceedings of the 5th International conference for young scientists (pp. 486–487). STT. [In Russian]

3. Gluhov, S. M., Lyozov, A. D., Shumkov, D. E., Klimova, V. A., & Tashlykov, O. L. (2021). Simu­lation of the passive heat removal system from the storage shaft of the IVV-2M research nuclear reactor using thermosyphons. In V. Yu. Ivanov, D. R. Baitimirov, E. D. Narkhov, & D. M. Spiridonov (Eds.), Physics. Technologies. Innovations: Proceedings of the 8th International youth scientific conference (pp. 113–122). Ural Federal University. [In Russian]

4. Evdokimov, V. S., Maximenko, V. A., Vasilyev, V. K., & Tretyakov, A. V. (2014). The experimental research of the season-acting thermostabilizer of soil. Problems of the Regional Energetics, (3), 74–80. [In Russian]

5. Efimov, V. M., Vasilchuk, Yu. K., Rozhin, I. I., Popenko, F. E., & Stepanov, A. V. (2017). Modeling of the temperature schedule of the soil foundations with thermal stabilizers in the cryo­lithozone of the Sakha Republic (Yakutia). Arctic and Antarctica, (4), 86–97. https://doi.org/10.7256/2453-8922.2017.4.25036 [In Russian]

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3