The Finite Difference Method
Applied for the Simulation of the Heat Exchangers Dynamics
Professor Pavel Nevriva
VSB TU Ostrava
Technical University Ostrava
Faculty of Ekectrical Engineering and Computer Science
708 00 Ostrava, 17 listopadu 15
Abstract: The heat exchangers that transfer energy from combustion
gas to steam are an important part of the power circuits of thermal power
stations. Their inertia is often decisive for the design of the steam
temperature control system. In this paper, the analysis and the simulation
of the dynamics of steam superheaters is discussed. There are many types of
the steam superheaters applied in the industry. Here, the steam superheater
of the counterflow heating surface arrangement is presented as an example.
The fire gas is the product of combustion of brown coal in a drum-boiler.
The heated medium is the saturated steam, generated by the steam generator.
To simulate the steam superheater on the computer, the heat exchanger and
the associated piping are described by the set of partial differential
equations.The equations are then solved numerically by modified finite
difference method. In the paper, the discussion of the simulation method and
both qualitative and quantitative simulation results are presented.
Brief Biography of the Speaker:
Born 1941 in Brno, Czech Republic.
Ing. (MSc) in Electrical Engineering at the Technical University Brno in
CSc (PhD) in Technical Cybernetics at the Technical University Brno in 1968.
DrSc in Technical Cybernetics at the Czech Technical University in Prague in
Professor at VSB-Technical University of Ostrava since 1990.
1964 -1966 VZKG Ostrava Steel Works, research worker.
1967 -1971 VSB-Institute of Mining and Metallurgy Ostrava, project leader.
1971 -1986 Research Institute of Metallurgy Dobra, head of department.
1987 -1990 Vitkovice Steel Works, Ostrava, head of department.
1990 -1994 VSB-Technical University Ostrava, head of department.
1995 - VSB-Technical University Ostrava, professor.
4 books, 204 papers.