Coal-fired open-cycle liquid-metal magnetohydrodynamic topping cycle for retrofit of steam power plants. [Two-phase working fluid composed of coal combustion products and liquid copper]

Most of the electricity being produced throughout the world today is from steam power plants. At the same time, many other competent means of gener-ating electricity have been developed viz. electricity from natural gas, MHD generators, biogas, solar cells, etc. But steam power plants will continue to be competent because of the use of water as the main working fluid which is abundantly available and is also reusable. The condenser remains among one of the key components of a steam power plant. The efficiency of a thermal power plant depends upon the efficiency of the condenser. In this paper, a the-oretical investigation about thermal analysis and design considerations of a steam condenser has been undertaken. A hybrid steam condenser using a higher surface area to diameter ratio of cooling a water tube has been analyzed. The use of a hybrid steam condenser enables higher efficiency of the steam power plant by lowering condenser steam pressure and increasing the vacuum inside the con-denser. The latent/sensible heat of steam is used to preheat the feed water supply to the boiler. A con-ceptual technological design aspect of a super vacu-um hybrid surface steam condenser has been theo-retically analyzed.

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Speciation of Trace and Major Elements from Coal Combustion Products of Serbian Power Plants (I)—“Kostolac A” Power Plant

Energy Sources Part A Recovery Utilization and Environmental Effects ◽

10.1080/15567030903503217 ◽

2011 ◽

Vol 33 (21) ◽

pp. 1960-1968 ◽

Cited By ~ 3

Author(s):

A. Popovic ◽

D. Djordjevic ◽

D. Relic ◽

A. Mihajlidi-Zelic

Keyword(s):

Power Plant ◽

Coal Combustion ◽

Power Plants ◽

Combustion Products ◽

Major Elements ◽

Coal Combustion Products ◽

Trace And Major Elements

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98/00494 Fluidized-bed coal combustion. Part III. Steam power plants with pressurized fluidized-bed boilers

Fuel and Energy Abstracts ◽

10.1016/0140-6701(98)94362-4 ◽

1998 ◽

Vol 39 (1) ◽

pp. 42

Keyword(s):

Fluidized Bed ◽

Coal Combustion ◽

Power Plants ◽

Steam Power ◽

Steam Power Plants ◽

Fluidized Bed Boilers

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Coal Combustion Products Management toward a Circular Economy—A Case Study of the Coal Power Plant Sector in Poland

Energies ◽

10.3390/en13143603 ◽

2020 ◽

Vol 13 (14) ◽

pp. 3603 ◽

Cited By ~ 1

Author(s):

Agnieszka Bielecka ◽

Joanna Kulczycka

Keyword(s):

Circular Economy ◽

Coal Combustion ◽

Power Plants ◽

Business Models ◽

Combustion Process ◽

Combustion Products ◽

Readiness For Change ◽

Environmental Reporting ◽

Large Power ◽

Coal Combustion Products

Coal combustion products can be considered as commercial products or waste depending on the quality of the coal, the combustion process, and the country’s legislation. The circular economy can create incentives for the implementation of new business models in large power plants in cooperation with coal mines and users of coal combustion products. This is particularly important in Poland, where coal still remains the main source of energy, employing over 80,000 workers. The objective of this study was to assess the readiness for change toward a circular economy and to identify challenges, barriers, and plans at seven large power plants. To do this, a final questionnaire was developed after checking environmental reporting, a CATI survey, and brainstorming between circular economy leaders from science, industry, and non-governmental organizations. The results indicate that even if the great economic and environmental potential of coal combustion products management are understood, all requirements connected with CO2 and air pollution have higher priorities. Policy shifts away from coal do not promote cooperation, but the higher acceptance of products from waste and more transparent data shows a large potential for changes toward a circular economy.

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Design of a Simple Model of S. P. P. to Study the Effect of Increasing the Boiler Pressure on the Efficiency of the Model

Engineering & Technology Review ◽

10.47285/etr.v2i1.60 ◽

2021 ◽

Vol 2 (1) ◽

pp. 1-7

Author(s):

Abdlmanam Elmaryami ◽

Hafied M. B. Khalid ◽

Abdulssalam M. Abdulssalam ◽

Alaa A. Abdulssalam ◽

Mohamed M. Alssafi ◽

...

Keyword(s):

Simple Model ◽

Thermal Efficiency ◽

Power Plants ◽

Rankine Cycle ◽

Important Application ◽

Working Fluid ◽

Operating Pressure ◽

Steam Power ◽

Power Cycles ◽

Steam Power Plants

The Rankine cycle is one example of vapor power cycles. One important application of it is in steam power plants. In this paper, a simple model of the steam power plant is designed to study the effect of increasing boiler's pressures (3, 4, 5, and 6 bar respectively) on the efficiency and the dryness friction of the Model. Properties of the important points in the cycle were calculated consequently the losses in the pump, the losses in the condenser, expansion of the working fluid through the turbine, and the heat transfer to the working fluid through the boiler were determined. From the results, it was found that with the increasing of the boiler's operating pressure the thermal efficiency of the model cycle increases due to a substantial increase in network. Thus net-effect is marked increases in the thermal efficiency of the cycle on account of these measures.

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