Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation

Vladimir Lapshin

doi:10.20295/2223-9987-2023-3-147-156

UDC 628.14

ANALYSIS OF HEAT EXCHANGE PROCESSES ON THE SURFACE OF THE ABOVEGROUND PIPELINE WITH HEAT INSULATION Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation

АА Аа

Published in Bulletin of scientific research results · Volume 2023, Issue 3 · Pages 147–156 · Rubric: GENERAL TECHNICAL PROBLEMS AND SOLUTION APPROACH

DOI: https://doi.org/10.20295/2223-9987-2023-3-147-156

Received: 23.09.2023 Accepted: 26.09.2023 Published: 26.09.2023

Authors

Vladimir Lapshin

Academic degree: doctor of physical and mathematical sciences

Science rang: professor

Emperor Alexander I St. Petersburg State Transport University Russian Federation · Saint-Petersburg

ABSTRACT

Purpose: Transport infrastructure facilities include a variety of water supply systems. In the conditions of negative ambient temperatures, there is a risk of freezing and destruction of water pipelines. In mathematical modeling of the operation of aboveground pipelines, the correct description of the heat exchange process between the outer wall of the pipeline and the surrounding atmosphere is of great importance. The boundary condition corresponding to this process traditionally includes a heat transfer coefficient depending on a number of unpredictable parameters (wind speed and direction, atmospheric pressure, air humidity). The purpose of this work is to carry out a comparative analysis of the role of free and forced convective heat exchange and to justify the possibility of setting a boundary condition that depends only on the outside air temperature. Methods: To solve this problem, the work uses numerical analysis of similarity criteria for the heat exchange process under conditions typical for the operation of an above-ground pipeline with thermal insulation. The justification of the boundary condition on the external surface of the pipeline is based on the law of energy conservation. Results: The values of the parameters of the problem are determined, in which free or forced convective heat exchange prevails. It has been shown that forced convection prevails in conditions typical for the operation of above-ground water pipelines. Under these conditions, the difference between the temperature of the external surface of the insulated pipeline and the surrounding atmosphere is small. It has been shown that in this case, it is advisable to use the equality of atmospheric air temperatures and pipeline surface temperatures as a boundary condition. Practical significance: Understanding the mechanisms of heat exchange makes it possible to create an adequate model of the operation of pipelines in conditions of negative temperatures. Setting a more accurate and simple boundary condition on the surface of the pipeline simplifies the task of mathematical modeling. The results obtained in this article can be used in mathematical modeling of any pipelines with thermal insulation.

KEYWORDS

Above-ground pipeline, heat insulation, convective heat exchange, heat transfer coefficient, boundary condition, mathematical model

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1. Bogoslovskiy P. A. Ledovyy rezhim truboprovodov gidroelektricheskih stanciy / P. A. Bogoslovskiy. - M.; L.: Gosenergoizdat, 1950. - 154 s.

2. Zhidkih V. M. Ledovyy rezhim truboprovodov / V. M. Zhidkih, Yu. A. Popov. - L.: Energiya, 1979. - 132 s.

3. Cheng K. C. Freezing and melting heat transfer in engineering: Selected topics on ice-water systems and welding and casting processes / K. C. Cheng, N. Seki. - New York: Hemisphere, 1991. - 815 p.

4. Gordon J. R. An Investigation into Freezing and Bursting Water Pipes in Residential Construction / J. R. Gordon // Research Report, University of Illinois at Urbana-Champaign, Urbana, USA. - 1996. - Iss. 96-1. - Pp. 1-51. - URL: https://www.ideals.illinois.edu/items/54859.

5. Akyurt M. Freezing phenomena in ice-water systems / M. Akyurt, G. Zaki, B. Habeebullah // Energy Conversion and Management. - 2002. - Vol. 43. - Pp. 1773-1789.

6. McDonald A. Mathematical simulation of the freezing time of water in small diameter pipes / A. McDonald, B. Bschaden, E. Sullivan et al. // Applied Thermal Engineering. - 2014. - Vol. 73(1). - Pp. 142-153.

7. Hongfei Xu. Modelling ice and wax formation in a pipeline in the Arctic environment / Xu Hongfei, H. Dali, S. Yue et al. // Journal of Loss Prevention in the Process Industries. - 2020. - Vol. 66. - P. 104197. - DOI:https://doi.org/10.1016/j.jlp.2020.104197.

8. Terehov L. D. Vnutrennee obledenenie vodovodov v zimniy period / L. D. Terehov, N. V. Tvardovskaya, E. A. Tvardovskaya // III Betankurovskiy mezhdunarodnyy inzhenernyy forum: sbornik trudov, Sankt-Peterburg, 2-3 dekabrya 2021 goda. - SPb.: FGBOU VO PGUPS, 2021. - T. 2. - S. 161-164.

9. Miheev M. A. Osnovy teploperedachi / M. A. Miheev, I. M. Miheeva. - M.: Energiya, 1977. - 344 s.

10. Kutateladze S. S. Osnovy teorii teploobmena / S. S. Kutateladze. - M.: Atomizdat, 1979. - 416 s.

11. Landau L. D. Teoreticheskaya fizika. T. VI. Gidrodinamika / L. D. Landau, E. M. Lifshic. - M.: Nauka, 1986. - 736 s.

12. GOST 21880-2011. Maty iz mineral'noy vaty proshivnye teploizolyacionnye / Redaktor V. N. Kopysov. - M.: Standartinform, 2012. - 10 s.

GOST

Lapshin V. F. Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation // Bulletin of scientific research results. 2023. no. 3. pp. 147-156. DOI: https://doi.org/10.20295/2223-9987-2023-3-147-156. (Date of access 17.10.2026).

MLA

Vladimir Lapshin. "Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation." Bulletin of scientific research results 2023.3 (2023): 147-156. DOI: https://doi.org/10.20295/2223-9987-2023-3-147-156.

APA

Lapshin V. F. (2023). Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation. Bulletin of scientific research results, 2023(3), 147-156. https://doi.org/10.20295/2223-9987-2023-3-147-156

Chicago

Vladimir Lapshin. "Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation." Bulletin of scientific research results 2023, no. 3 (2023): 147-156. https://doi.org/10.20295/2223-9987-2023-3-147-156.

WIKI

{{cite journal | author = Lapshin V. F. | title = Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation | journal = Bulletin of scientific research results | year = 2023 | volume = 2023 | issue = 3 | pages = 147-156 | doi = 10.20295/2223-9987-2023-3-147-156 }}

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ANALYSIS OF HEAT EXCHANGE PROCESSES ON THE SURFACE OF THE ABOVEGROUND PIPELINE WITH HEAT INSULATION Analysis of Heat Exchange Processes on the Surface of the Aboveground Pipeline with Heat Insulation

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