scholarly journals Development of water deaeration technologies with boiler exhaust gases

2021 ◽  
Vol 2039 (1) ◽  
pp. 012036
Author(s):  
M M Zamaleev ◽  
V N Kovalnogov ◽  
R I Kamalova ◽  
O V Pazushkina
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Power Plants ◽  
Thermal Power ◽  
Transfer Efficiency ◽  
Thermal Power Plants ◽  
Exhaust Gases ◽  
Mass Transfer Efficiency ◽  
The Media ◽  
Water Deaeration

Abstract The calculation of the heat and mass transfer efficiency of the proposed technology for deaeration of water by the exhaust gases of a gas-proof boiler in deaerators of serial design has been performed. The conditions and criterial values of the media consumption in the apparatus have been studied. It is shown that the technology can be successfully applied in operating thermal power plants.

scholarly journals SIMULATION OF LOW-GRADE COAL COMBUSTION IN REAL CHAMBERS OF ENERGY OBJECTS

2019 ◽  
Vol 59 (2) ◽  
pp. 98-108 ◽  
Author(s):  
Aliya Askarova ◽  
Saltanat Bolegenova ◽  
Symbat Bolegenova ◽  
Meruyert Beketayeva ◽  
Valeriy Maximov ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Power Plants ◽  
Thermal Power ◽  
3D Modelling ◽  
Low Grade ◽  
Thermal Power Plants ◽  
Combustion Chambers ◽  
Transfer Processes ◽  
Mass Transfer Processes

The aim of the work is to create new computer technologies for 3D modelling of heat and mass transfer processes in high-temperature physicochemically reacting environments that will allow to determine the aerodynamics of the flow and heat and mass transfer characteristics of technological processes occurring in the combustion chambers in existing coal-fired thermal power plants of the Republic of Kazakhstan. The novelty of the research lies in the use of the latest information technologies of 3D modelling, which will enable project participants to obtain new data on complex heat and mass transfer processes when burning pulverized coal in real combustion chambers operating in Kazakhstan’s Thermal Power Plants (TPP). A numerical simulation, including thermodynamic, kinetic and threedimensional computer simulation of heat and mass transfer processes when burning low-grade fuel, will allow finding optimal conditions for setting adequate physical, mathematical and chemical models of the technological process of combustion of burning high ash coals. The computer modelling methods proposed for the development are new and technically feasible, since coal-fired power plants all over the world use all types of coal. The developed technologies will allow replacing or eliminating the conduct of expensive and labour-consuming natural experiments on coal-fired power plants.

Automatic Control and Regulation Systems for Heat and Power Plants

2021 ◽  
pp. 94-123
Author(s):  
V.A. Markov
Keyword(s):  
Power Plants ◽  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Thermal Power ◽  
Internal Combustion ◽  
Thermal Power Plants ◽  
Combustion Engines ◽  
Exhaust Gases ◽  
Systems Research ◽  
Modern Control

The modern stringent requirements for fuel efficiency, exhaust gases toxicity and dynamic performance can only be met by equipping thermal power plants with modern control and regulation systems. Thermal power plants based on internal combustion engines have found the greatest application. They are used in different fields --- automobile and railway transport, agricultural, road-building and forestry machines, in ship-building, aviation, stationary power plants. The analysis of the main directions for further improvement of thermal power plants with internal combustion engines and their automated control and regulation systems has been carried out. Among these directions are an expansion of functional capabilities in such systems, improvement of control and regulation processes quality and their use at adaptation of thermal power plants to work on alternative fuels. The important aspects for improvement of thermal power plants with internal combustion engines are the necessity of studying the working processes of engines and their systems in order to decrease the exhaust gases toxicity. The relevance of these systems research is shown and the evaluation of the current level in their development is made. A characteristic feature of modern control and regulation systems of thermal power plants is their widespread construction on modern microprocessor element base The paper was based on the materials of the reports of the all-Russian scientific and technical conference n.a. Professor V.I. Krutov (27.01.2021)

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