A system dynamics model of fire-tube shell boiler was developed. The derivation of the dynamics model started with a nonlinear time-variant dynamic modeling based on the transport phenomena in the fire-tube boiler. A linear time-invariant perturbed model around steady-state operating points was then derived. The identifiable parameters τmw, τwa, K, β, and τd were identified by using field test data and least-squares estimation method; the coefficients C’s were, meanwhile, directly predicted by using the small-perturbation relations. Empirical correlations of the identifiable parameters were further derived to account for the variation of parameters with operating conditions. The present perturbed model is thus semi-empirical and can describe the dynamic behaviour of fire-tube boilers over a wide range of operating conditions. The predictions of dynamic responses using the present model were shown to agree very well with the test results.
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December 1994
Research Papers
A System Dynamics Model of Fire-Tube Shell Boiler
B. J. Huang,
B. J. Huang
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan 10764
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P. Y. Ko
P. Y. Ko
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan 10764
Search for other works by this author on:
B. J. Huang
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan 10764
P. Y. Ko
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan 10764
J. Dyn. Sys., Meas., Control. Dec 1994, 116(4): 745-754 (10 pages)
Published Online: December 1, 1994
Article history
Received:
December 4, 1988
Online:
March 17, 2008
Citation
Huang, B. J., and Ko, P. Y. (December 1, 1994). "A System Dynamics Model of Fire-Tube Shell Boiler." ASME. J. Dyn. Sys., Meas., Control. December 1994; 116(4): 745–754. https://doi.org/10.1115/1.2899274
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