Glossary

a hot flue gases temperature error of 4.07% above the predicted performance is obtained from

Table 10. Comparison between initial and final loads for a download change from 100 to 75%.

This chapter presents a methodology of a modeling and simulation of the steam generation process conceived as a development tool that permits the evaluation of different operating conditions of Industrial Boiler and HRSG systems. The objective is to support critical engineering decisions with respect to design, fault evaluation, and integrated analysis. Also, the simulation system allows the development of simulation exercises about interest scenarios to determine important multivariable cause-effects in both, industrial boilers and HRSG systems,

Two case studies are shown with validation tables both, in steady state and dynamic conditions. Even though the mathematical models are simplified, the results provide enough precision to study very complex dynamical behavior of this multivariable thermal process. Results show a difference of less than 5% with respect to the manufacturer's predicted performances in critical values of drum pressure, steam flow, steam temperatures, and hot flue gases flow. The numerical stability of the simulation behaves well due to the robustness of the discretization methodology and numerical methods used in the simulation model. The simulation model generates accumulated discrepancies and errors between 2 and 5% in temperature errors for the heat exchanger models such as economizers and superheaters. The drum pressure follows

without exposing the equipment to harmful and costly operative tests.

the computer simulation.

24 Modeling and Computer Simulation

4. Conclusions



refers to economizer refers to internal fluid

refers to hydraulics

refers to liquid water

refers to internal

refers to metal

refers to a mixture refers to external

refers to superheater refers to water vapor refers to water header

Author details

References

Antonio Favela-Contreras

Campus, Monterrey, México

Babcock & Wilcox Company; 2015

Cycling. OMNI. 2003;2

refers to the main steam valve refers to the feed-water valve

\*Address all correspondence to: graciano.dieck.assad@itesm.mx

refers to gas

refers to the transfer from fluid to metal

Modeling, Simulation, and Control of Steam Generation Processes

http://dx.doi.org/10.5772/intechopen.79410

27

refers to the transfer from gas to metal

refers to riser tubes or refers to reference value

Graciano Dieck-Assad\*, José Luis Vega-Fonseca, Isaías Hernández-Ramírez and

Mechatronics and Electrical Engineering Department, Tecnológico de Monterrey, Monterrey

[1] Tomei GL. Steam Its Generation and Use, 42nd ed. Charlotte, North Caroline, U.S.A.: The

[2] Starr F. Background to the Design of HRSG Systems and Implications for CCGT Plant

