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Method for Measuring Temperature of Inner Wall Surface of Pipeline in Nuclear Power Plant

[+] Author Affiliations
Ling Jun, Liu Lang, Chen Tong, Liu Hong-tao, He Da-yu

China Nuclear Power Design Company Ltd, Shenzhen, China

Wang Hai-jun

Xi'an Jiaotong University, Xi’an, China

Paper No. ICONE25-67553, pp. V001T01A041; 7 pages
doi:10.1115/ICONE25-67553
From:
  • 2017 25th International Conference on Nuclear Engineering
  • Volume 1: Operations and Maintenance, Engineering, Modifications, Life Extension, Life Cycle and Balance of Plant; I&C, Digital Controls, and Influence of Human Factors
  • Shanghai, China, July 2–6, 2017
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5779-3
  • Copyright © 2017 by ASME

abstract

Thermal stratification can occur when hot and cold fluids mix inside the pipeline of nuclear power plant, which can lead to temperature fluctuations with large amplitude and high frequency with time-varying wall heat stress and even induce thermal fatigue phenomenon. Therefore, how to accurately get temperature fluctuations of the inner wall without damaging the whole structure of the pipe system becomes the prime problem to be solved in the study of thermal fatigue. Base on energy conservation law, the non-iterative mathematic model of inverse heat conduction using the volume-control method has been developed in this paper for pipe in nuclear power plant. Numerical and experiment results show that the volume-control method can accurately catch the temperature fluctuation of different positions on the inner wall.

Copyright © 2017 by ASME

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