Our paper analyzes the issue of managing structural and technological modernization Russian power utilities industry based on basic criteria sustainable development. We have chosen coal-fired generation its defining technologies as main subject for our analysis. Key points development strategy that has been drawn up to 2030 are compared against principles Moreover, a mathematical economic model is proposed justify choice plant technology from standpoint economic, social, environmental efficiency.

The transition to oxy-fuel combustion power cycles is a prospective way decrease carbon dioxide emissions into the atmosphere from energy sector. To identify which technology has highest efficiency and lowest emission level, thermodynamic analysis of semiclosed combined cycle (SCOC-CC), E-MATIANT cycle, Allam was carried out. modeling methodology been described in detail, including approaches defining working fluid properties, mathematical models air separation unit, cooled gas turbine...

The world community is worried about the effects of global warming. A few agreements on reduction CO2 emissions have been signed recently. large part these produced by power production industry. Soon, requirements for thermal plant ecology and efficiency performance may become significantly higher. Thus, contemporary problem development highly efficient facilities with low toxic greenhouse gas emission. An way to reduce into atmosphere, which implies maintaining economic growth, creation...

This paper provides a comparative entrepreneurial analysis of modern combined-cycle power generation technologies and future-oriented high-efficiency oxy-fuel combustion cycles with zero emissions.Considering the main criteria for sustainable development, we identify technology that lowest cost electricity supply maximum economic efficiency investments equally high environmental indicators.Based on comprehensive literature review comparison technical parameters forward-looking under...

The transition to the use of supercritical carbon dioxide as a working fluid for power generation units will significantly reduce equipment′s overall dimensions while increasing fuel efficiency and environmental safety. Structural parametric optimization S–CO2 nuclear plants was carried out ensure maximum electricity production. Based on results mathematical modeling, it found that plant with BREST–OD–300 reactor leads an increase from 39.8 43.1%. Nuclear Rankine water cycle Brayton...

There is a steady trend in the world to increase share of distributed generation. The volume self-generated energy commissioning constantly growing, with projected increases growth rates future. At same time, demands for efficiency and environmental safety new power plants are increasing. In this regard, one promising areas development transition small nuclear (SNPPs). As case wind solar plants, SNPP operations not accompanied by emissions toxic substances or greenhouse gases into...

This paper is devoted to improvement of environmental safety in hydrocarbon-firing TPPs. Despite the development renewable power sources, number traditional production facilities continues its growth. The toxic emission mitigation TPPs has been deeply investigated, but problem greenhouse gas atmospheric emissions topical interest. Oxy-fuel technology reduces CO2 and highly efficient environmentally safe. Also, it requires relatively low capital investments. Thermal efficiency analysis shows...

Small nuclear power plants can provide a stable, carbon-free energy supply to civil infrastructure and industrial enterprises in remote regions isolated from unified systems. More than 70 projects of small modular reactors are currently being developed by IAEA member countries; several low-power units already supplying thermal electrical consumers. One the main limitations standing way widespread dissemination this technology is high specific capital cost plant; therefore, new scientific...

Improvement of energy efficiency in technological processes at industrial enterprises is one the key areas saving. Reduction costs required for production energy-intensive products can be achieved through utilization waste heat produced by high-temperature thermal furnace units. Generation electric power based on using cycles with working fluids that are not conventional large engineering, may become a promising saving trend. In this paper, thermodynamic analysis and optimization purposes...

Today, with the increases in organic fuel prices and growing legislative restrictions aimed at increasing environmental safety reducing our carbon footprint, task of thermal power plant efficiency is becoming more topical. Transforming combusting energy into electric efficiently will allow reduction cost fraction structure decrease harmful emissions, especially greenhouse gases, as less be consumed. There are traditional ways improving efficiency: turbine inlet temperature utilizing exhaust...

This study presents the thermodynamic analysis results of NET Power cycle featuring nearly 100% CO2 capture level. Significant initial pressure, low turbine pressure ratio, recuperation heat in regenerator allow achieving very high net efficiency. The design parameters are set up on basis component technologies today's state-of-the-art gas turbines. models cooled compartment and multi-flow temperature were developed. potential pinch points analyzed. An influence inlet outlet coolant...

One of the problems in Russia Power Sector strategy until 2035 is technologies development for mitigation harmful emissions by heat and power production industry.This goal may be reached transition to environmentally friendly generation units such as oxy-fuel combustion cycles that burn organic fuels pure oxygen.This paper provides results research on one most efficient cycle, which was modified usage nitrogen turbine cooling.The computer simulation parametric optimization approaches are...

Global warming is one of the main issues facing humanity in 21-st century. With high probability, an increase concentration CO2 Earth's atmosphere by 27 % over past 60 years reason. Oxy-fuel combustion a promising technology for carbon dioxide capture power plants. Net efficiency advanced cycles more than 50 (including oxygen production and compression).Due to multicomponent working fluid, which distinctive feature these cycles, problem precise thermodynamic calculation optimization arises....

The Rankine cycle is widely used for electricity production. Significant weight and size characteristics of the power equipment working on superheated steam are main disadvantages such plants. transition to supercritical carbon dioxide (S-CO2) fluid a promising way achieve significant reduction in metal consumption increase energy efficiency. This paper presents results thermodynamic analysis S-CO2 thermal plants (TPPs) utilizing heat combustion products an boiler. It was found that net...

Today, most of the world’s electric energy is generated by burning hydrocarbon fuels, which causes significant emissions harmful substances into atmosphere thermal power plants. In world practice, flue gas cleaning systems for removing nitrogen oxides, sulfur, and ash are successfully used at facilities but reducing carbon dioxide plants still difficult technical economic reasons. Thus, introduction capture modern accompanied a decrease in net efficiency 8–12%, determines high relevance...

The paper is concerned with the thermodynamic analysis of a multi-stream heat exchanger system for Allam cycle and development regenerator flow chart. procedure are described in detail. constructed five double-flow exchangers has 2.5% lower power than ideal exchanging system. Besides, subsequent interaction principle transfer maximal amount proposed: it necessary to begin cooling heating flows minimal temperatures.

Abstract Combined cycle gas turbine cogeneration power plants provide maximal thermal efficiency. The facility load depends upon ambient conditions and it may limit its unloading degree, or control range. Energy accumulation extends the range by energy storing during excess period discharge high consumption period. This paper considers two technologies, with steam methane reforming hydrogen storage using electrolyzer fuel cell. In technology a part of heat recovery generator passes to...

Small nuclear power plants are a promising direction of research for the development carbon-free energy in isolated systems and remote regions with undeveloped infrastructure. Improving efficiency units integrated small modular reactors will improve prospects commercialization such projects. Power cycles based on supercritical carbon dioxide an effective solution that use reactor facilities initial coolant temperature above 550 °C. However, presence low rejected heat sources closed Bryton...

Our paper proposes a method for constructing system predicting defects and failures of power equipment the time their occurrence based on joint solution regression classification problems using machine learning methods. A distinctive feature this is use equipment’s technical condition index as an informative parameter. The results calculating visualizing in relation to electro-hydraulic automatic control hydropower turbine when defect “clogging drainage channels” showed that its...

The paper is concerned with the problem of development high-temperature steam turbine power plants ultra-supercritical (USC) initial parameters. One main disadvantages USC unit’s creation high price due to application expensive heat-resistant materials for boiler, live and reheat pipelines in turbines. To solve this problem, following technical improvements reduce equipment metal consumption are proposed: horizontal boiler layout, temperature a cooling system, oxy-hydrogen combustion...

The daily non-uniform power demand is a serious problem in industry. In addition, recent decades show trend for the transition to renewable sources, but their output depends upon weather and conditions. These factors determine urgency of energy accumulation technology research development. presence wide variety storage mechanisms leads need classification comparison as well consideration possible options application modern units. This paper presents comparative analysis methods systems...