SVIBOR - Project code: 2-08-189

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

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Project code: 2-08-189


HEAT AND MASS TRANSFER IN UTILITY STEAM GENERATORS


Main researcher: ŠERMAN, NIKOLA (46501)


Assistants
Type of research: applied
Duration from: 01/01/91. to 01/01/94.
Papers on project (total): 49
Papers on project quoted in Current Contents: 2
Institution name: Fakultet strojarsva i brodogradnje, Zagreb (120)
Department/Institute: Power Engineering Department
Address: Lučićeva 5
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 511 435
Fax: 385 (0)1 514 535
E-mail: Nikola.Serman@x400.srce.hr
Summary: The subject of the project is mathematical modelling and simulation of process steady states and dynamics in utility steam generators as well as research of certain phenomena in two-phase flow. The research is performed in three directions: improvement of the code for steady state and dynamic simulation of once-through steam generator water-vapour channel dedicated to research of thermal power block control. Improvement of three dimensional mathematical model of steam generator furnaces comprised of turbulent flue gas flow model, and models of combustion and relative heat transfer. Completion of experimental two-phases flow circulation loop (rated power 100kW, pressure range up to 200bar) and research of tube-wall temperature pulsation in regime of stationary forced flow evaporation.

Keywords: modeling and simulation, heat and mass transfer, steam generator, furnace

Research goals: - Development of the three-dimensional mathematical model of the flow, combustion and heat exchange processes in the gas and oil fired utility steam generator furnaces - Investigation of different discretization methods and numerical procedures applied to solution of the former model - Development of models simulation software on available computers - Improvement of the one-dimensional mathematical model of the thermohydraulic process dynamics in the once through steam generator tube system and the numerical procedure of its solution. The goal is to improve overall performances (speed, accuracy, robustness) of the developed simulation code, dedicated to the research of thermal power plant control. - Development of the mathematical model of the thermohydraulic process dynamics in the high pressure feedwater heater cascade, in order to solve control problems. - Completing the experimental two-phase flow test loop for the research of the boiling-water phenomena at higher pressure and forced water flow with emphasis on dry-out phenomena and the evaporator tube wall temperature fluctuation in the boiling zone. The maximum electric power of the test loop is 100 kW, working pressure is up to 200 bar and the mass flow density through the test loop is up to 1000 kg/m2s. Development of the software for computer-aided experiments monitoring and data acquisition.
Other information about the project.
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Last update: 10/11/95
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