Wyniki wyszukiwania - BazTech

1

Optimization of the design and operating characteristics of the boiler unit based on three-dimensional mathematical modeling

Ongar Bulbul, Beloev Hristo, Iliev Iliya Krastev, Mergalimova Almagul, Akbota Zhaksylyk

Rynek Energii

|

2022

|

Nr 2

98--102

EN

Currently, ANSYS Fluent software is widely used as an alternative engineering tool for describing the physical processes occurring in the furnace and gas burners of the boiler. In the work, the technology of preparation and characteristics of fuel combustion of the boiler KVTK-100-150-4 of the Ekibastuz CHPP are investigated. Calculations of the energy characteristics of the combustion process in the combustion chamber have been carried out. A three-dimensional mathematical model of the combustion process was carried out using the ANSYS Fluent software. The analysis of methods for reducing the formation of harmful substances.

2

Monte-Carlo method for assessing and predicting the reliability of thermal power plant equipment

Sultanov Makhsud Mansurovich, Griga Stepan Anatolyevich, Ivanitckii Maksim Sergeevich, Konstantinov Anatoly Alekseevich

Archives of Thermodynamics

|

2021

|

Vol. 42, no 4

87--102

EN

This paper presents the results of developing a methodology for assessing and predicting the technical condition of boiler plants and steam turbines. The proposed method is based on generalized experimental data on failures to predict the damage of the principal elements and components of thermal power plants by Monte-Carlo simulation. The proposed method considers the complexity of technological processes, turnaround time, failure rate, and condition of the residual metal life. It allows developing approaches to assessing each element’s safety to obtain a reliable and representative sample of failure statistics to reliability assessment of boilers and steam turbines of thermal power plants. According to the results, the probability of failure operation of steam boilers and turbines is 0.037 in the 100 MW conditions. The obtained results can be used to create predictive models that provide approaches to prolonging the operational state of elements of boiler plants and steam turbines of thermal power plants. It can be used in the implementation of projects of digital energy systems for monitoring and diagnostics of the main power equipment of thermal power plants.

3

Energy saving and abatement of gas emission in the wood industry

Bujak J. W.

Environment Protection Engineering

|

2016

|

Vol. 42, nr 2

107--124

EN

The analysis of heat losses and thermal efficiency of the steam system used for plywood dryers before and after its modernization has been presented. In the wood industry, mainly pressure-free condensate return systems are used. An existing open condensate return system has been improved by the application of a closed condensate tank in order to eliminate secondary steaming. The tested system consisted of three basic parts. One of them was a boiler plant producing superheated steam. Steam and condensate transfer grids connecting the boiler plant with the dryer constituted the next part of the tested steam system. The latter element was a processing device for plywood drying. The application of the closed condensate return system has increased the efficiency of the tested steam system by 15.5%. This resulted in lower emissions of contaminations to the atmosphere. The results of the test were also used to define basic economic indicators of the system in order to determine profitability of its installation.