Feasibility for the Application of the Temperature Difference Computing Method Based on the Simplified Solution of the Radial Temperature for a Boiler Steam Drum Wall to a Supercharged Boiler

Abstract:

The radial temperature difference calculation of a steam drum wall is an important step in the process of calculating the low-cycle fatigue lifetime of a steam drum. So the German Standard TRD301 recommended a temperature difference computing method based on the simplified solution for the radial temperature of a steam drum wall. In order to validate the feasibility for the application of this computing method to solving the same problem of a supercharged boiler, on the basis of the reasonable simplifications to the unstable heat conduction problem across a steam drum wall, its heat-conduction equations and definite conditions were determined, then the analytical solution for the radial temperature of a steam drum wall, together with its approximate and simplified solutions, is derived. The running example of one super-charged boiler was calculated and analyzed by use of the radial temperature difference computing methods based on the approximate and simplified solutions respectively. The com-puted results show that the German Standard computing method of TRD301 has great limitations in the same problem calculation of a supercharged boiler, and it can’t apply to the researches on the same problem and its relevant problems of a supercharged boiler as a universal computing method.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 6383-6390
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.6383
• Online since: November 2011
• Authors: Xin Wei Zheng, Zhi Yu Wang, Zi Gang Chen, Yu Sun, Bing Han, Xue You Wen
• Keywords: Analytical Solution, Approximate Solution, Radial Temperature, Simplified Solution, Steam Drum Wall, Supercharged Boiler, Temperature Difference Calculation

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