Comparison of the Computing Method for the Radial Temperature Difference of a Supercharged Boiler Steam Drum Shell Based on the Approximate Solution and the Current Chinese Standard

Abstract:

The radial temperature difference calculation of a steam drum shell is an important step in the process of calcu-lating its heat stress, so the current Chinese Standard recommended a computing method which was derived from the further modification to the simplified solution for the radial temperature of a steam drum shell. In order to derive the feasibility for the application of the current Chinese Standard computing method to a supercharged boiler, the computing method for the temperature difference of a steam drum shell, which was based on the approximate solution for the radial temperature of a steam drum shell and highly approaches to its analytic solution, was exercised. By analysing the computed results of examples, the conclusions show as follows: The current Chinese Standard computing method for the radial temperature difference of a steam drum shell can’t meet the calculation requirements of all the running work conditions and their courses of a supercharged boiler, and as a universal computing method, it can’t serve as a computing method for the same problem of a supercharged boiler. Whereas the approximate solution can apply to calculating the same problem of a supercharged boiler and a peak shaving utility boiler. Thereby the basis is offered for the selection and usage of the computing method for the radial temperature difference of a supercharged boiler steam drum shell, the pioneering researches on its interrelated problems and prac-tical applications.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 5496-5503
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.5496
• Online since: November 2011
• Authors: Xin Wei Zheng, Zheng Li, Hao Wang, Xiu Hui Chen, Dong Yang Zhang, Xue You Wen
• Keywords: Approximate Solution, Chinese Standard Method, Radial Temperature Difference, Steam Drum Shell, Supercharged Boiler

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