Projects / Programmes
Numerical analysis of steam power plants operation in Termoelektrarna-toplarna Ljubljana
| Code |
Science |
Field |
Subfield |
| 2.03.00 |
Engineering sciences and technologies |
Energy engineering |
|
| Code |
Science |
Field |
| T140 |
Technological sciences |
Energy research |
| T200 |
Technological sciences |
Thermal engineering, applied thermodynamics |
Heat&power plants, energy systems, cogeneration
Researchers (12)
Organisations (1)
Abstract
In the future, steam power plants will continue to play a central role in supplying electrical power and heat. Opening of energy market while following strict environmental standards of operation for such plants represents a great challenge for plant management. Optimization of plant operation involves considering energetical, economical and environmental criteria.
Actual energy efficiency of a steam plant is determined by measurement of all energy flows, where the indirect method has to be used due to measurement uncertainty of coal mass flow determination.
On the basis of process schemes, processes in a steam plant are modelled by using mass and energy balances, resulting in systems of linear equations. For certain plant elements like district heating stations or rotational air heaters, the models for energy and mass balances are investigated in detail and written in appropriate linearised form. Numerical model is calibrated on the basis of previously measured data and its accuracy is verified.
Simulation of characteristic operational modes is performed for individual units: backpressure, condensing and mixed. By using parametrical variation of boundary conditions, an optimal mass flow setting is found (simulated) for each operational mode to achieve maximum efficiency and economic effect.
Main goals of the research project are: objective estimation of present state effectiveness, making of numerical model for each plant unit, model calibration on the basis of previous measurements of energy flows and efficiencies, use of numerical models for optimisation of steam power plant operation, use of numerical models for planning development of energy supply in the future.
