A SYSTEM FOR COMPUTER-BASED CREATION OF STATIC AND DYNAMIC MATHEMATICAL MODELS OF THERMAL POWER PLANTS

1992 ◽  
Author(s):  
S. K. Skripkin ◽  
A. H. Kler ◽  
V. A. Mai
Keyword(s):  
Mathematical Models ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Computer Based

Dynamic Characteristics and Mathematical Models of Filled Level for Ball Mills with Double Inlets and Outlets

2014 ◽  
Vol 1008-1009 ◽  
pp. 988-994
Author(s):  
Wen Jun Wan ◽  
Zhi Yuan Fan ◽  
Wei Jian Huang ◽  
Shi He Chen
Keyword(s):  
Mathematical Models ◽  
Strong Coupling ◽  
Dynamic Characteristics ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Mechanism Analysis ◽  
Thermal Unit ◽  
Ball Mills ◽  
Mathematical Equations

Ball mills with double inlets and outlets (BMDIO) are widely equipped in milling systems of thermal power plants because of BMDIOs’ vantage on being able to pulverize various raw coal. In this paper, dynamic characteristics of mill’s coal level were studied by pulverizing coal mechanism analysis. Furthermore, models for filled level of mill were obtained with mathematical Equations. The nonlinear, strong coupling and large lag features of BMDIO’s dynamic characteristics were demonstrated by the model for level of materiel constructed in this paper. And, the model would be become the available theory basis for the calculation of pulverized coal into furnace and design of combustion in fossil-fired thermal unit.

Ensuring the quality and reliability of power equipment components during their production and testing as part of a prototype

2020 ◽  
Vol 13 (2) ◽  
pp. 91-96
Author(s):  
V. M. Trukhanov ◽  
M. M. Sultanov ◽  
Yu. A. Gorban’ ◽  
M. P. Kukhtik
Keyword(s):  
Mathematical Models ◽  
Power Plants ◽  
Thermal Power ◽  
Quality Parameters ◽  
Practical Significance ◽  
Thermal Power Plants ◽  
Power Equipment ◽  
Serial Production ◽  
Theoretical Approaches ◽  
Quality And Reliability

The object of study is the power equipment of thermal power plants. When developing new parts and components of power equipment, a problem arises of ensuring the quality and reliability at the stage of their putting into production and in the process of serial production. To solve this problem, the following tasks have been set: to develop ways and methods to ensure the quality and reliability of the development batch of equipment; to determine the scope of running-in tests of components as part of a prototype during serial production; to show the influence of production factors on the quality and reliability of the output product; to determine the nomenclature of production quality parameters and their impact on the manufacturability and reliability of products. The scientific novelty consists in generalization of methods, ways, mathematical models for ensuring the quality and reliability of newly created similar products. The theoretical approaches, which are proposed in the article, can be aimed at creation of state-of-art conditions for manufacturing of parts, structures and components of power equipment with new process and material characteristics in terms of reliability. The practical significance is determined by implementation of the developed methods, ways, mathematical models in the normative and technical documentation of newly created equipment. A procedure is described for holding running-in and acceptance tests. The factors, which affect the quality and reliability of components of power equipment of thermal power plants, are considered. Various groups of parameters for assessment of the quality of output products have been described. Equations are presented for calculation of manufacturability parameters, in particular, for labor-intensity, material consumption, material utilization rate, production prime cost, as well as for standardization and unification parameters. Methods are considered for determination of the product quality parameters.

On the prospect of introduction of plasma ignition in power boilers

2019 ◽  
Vol 12 (1) ◽  
pp. 22-28
Author(s):  
V. Ye. Mikhailov ◽  
S. P. Kolpakov ◽  
L. A. Khomenok ◽  
N. S. Shestakov
Keyword(s):  
Russian Federation ◽  
Solid Fuel ◽  
Power Plants ◽  
Thermal Power ◽  
Fuel Oil ◽  
Solid Fuels ◽  
Thermal Power Plants ◽  
Plasma Ignition ◽  
The Russian Federation ◽  
Capital Construction

One of the most important issues for modern domestic power industry is the creation and further widespread introduction of solid propellant energy units for super-critical steam parameters with high efficiency (43–46%) and improved environmental parameters. This will significantly reduce the use of natural gas.At the same time, one of the major drawbacks of the operation of pulverized coal power units is the need to use a significant amount of fuel oil during start-up and shutdown of boilers to stabilize the burning of the coal torch in the variable boiler operating modes.In this regard, solid fuel TPPs need to be provided with fuel oil facilities, with all the associated problems to ensure the performance (heating of fuel oil in winter), reliability and safety. All of the above problems increase both the TPP capital construction costs, and the electricity generating cost.A practical solution to the above problems at present is the use of a plasma technology for coal torch ignition based on thermochemical preparation of fuel for combustion. The materials of the developments of JSC “NPO CKTI” on application of plasmatrons in boilers of thermal power plants at metallurgical complexes of the Russian Federation are also considered.Plasma ignition systems for solid fuels in boilers were developed by Russian specialists and were introduced at a number of coal-fi red power plants in the Russian Federation, Mongolia, North Korea, and Kazakhstan. Plasma ignition of solid fuels is widely used in China for almost 30% of power boilers.The introduction of plasma-energy technologies will improve the energy efficiency of domestic solid-fuel thermal power plants and can be widely implemented in the modernization of boilers.During the construction of new TPPs, the construction of fuel oil facilities can be abandoned altogether, which will reduce the capital costs of the construction of thermal power plants, reduce the construction footprint, and increase the TPP safety.

Features of antibodies against benzo[a]pyrene formation in workers of coal mines and thermal power plants

2019 ◽  
pp. 9-14
Author(s):  
Ye. G. Polenok ◽  
S. A. Mun ◽  
L. A. Gordeeva ◽  
A. A. Glushkov ◽  
M. V. Kostyanko ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Reference Group ◽  
Coal Dust ◽  
Thermal Power ◽  
Coal Mines ◽  
Serum Levels ◽  
Thermal Power Plants ◽  
Immune Reactions

Introduction.Coal dust and coal fi ring products contain large amounts of carcinogenic chemicals (specifically benz[a]pyrene) that are different in influence on workers of coal mines and thermal power plants. Specific immune reactions to benz[a]pyrene therefore in these categories of workers can have specific features.Objective.To reveal features of antibodies specifi c to benz[a]pyrene formation in workers of coal mines and thermal power plants.Materials and methods.The study covered A and G class antibodies against benz[a]pyrene (IgA-Bp and IgG-Bp) in serum of 705 males: 213 donors of Kemerovo blood transfusion center (group 1, reference); 293 miners(group 2) and 199 thermal power plant workers (group 3). Benz[a]pyrene conjugate with bovine serum albumin as an adsorbed antigen was subjected to immune-enzyme assay.Results.IgA-Bp levels in the miners (Me = 2.7) did not differ from those in the reference group (Me = 2.9), but in the thermal power plant workers (Me = 3.7) were reliably higher than those in healthy men and in the miners (p<0.0001). Levels of IgG-Bp in the miners (Me = 5.0) appeared to be lower than those in the reference group (Me = 6.4; (p = 0.05). IgG-Bb level in the thermal power plantworkers (Me = 7.4) exceeded the parameters in the healthy donors and the miners (p<0.0001). Non-industrial factors (age and smoking) appeared tohave no influence on specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers.Conclusions.Specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers are characterized by peculiarities: the miners demonstrate lower levels of class A serum antibodies to benz[a]pyrene; the thermal power plant workers present increased serum levels of class G antibodies to benz[a]pyrene. These peculiarities result from only the occupational features, but do not depend on such factors as age, smoking and length of service at hazardous production. It is expedient to study specific immune reactions to benz[a]pyrene in workers of coal mines and thermal power plants, to evaluate individual oncologic risk and if malignancies occur.

How Flexible Do Thermal Power Plants with CCS Need to Be?

2019 ◽  
Author(s):  
Matthias Schnellmann ◽  
David Reiner ◽  
Stuart Scott ◽  
Chi Kong Chyong
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants
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