吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (01): 39-45.

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Assessment method for heat flux of superheater/reheater tubes

XU Hong, ZHAO Zhi-yuan, LIN Zhen-xian   

  1. School of Energy,Power and Mechanical Engineering, North China Electricity Power University, Beijing 102206,China
  • Received:2010-03-12 Online:2012-01-01 Published:2012-01-01

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Abstract:

The changes of the heat fluxes on interfaces of the superheater/reheater tubes with different tube geometries, flue gas temperatures, steam flows and temperatures were analyzed using the established numerical model and the corresponding program. The relationship expressions of the heat flux versus the tube imner-wall oxide scale thickness and operation time were obtained by regression analyses. The results provide a theoretical basis for the design and operation of the power plant.

Key words: power machniery and engineering, superheater, reheater, heat flux, oxide scale, operation time, assessment

CLC Number: 

  • TK224.9


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