scholarly journals Electric Power Amplification in Fusion Power Plants

2021 ◽  
Vol 1 (5) ◽  
pp. 1-3
Author(s):  
Robert L. Hirsch

Fusion power concepts that are heated by electrical devices for the purpose of producing high levels of electrical output are in effect electric power amplifiers. Three systems are considered: A hypothetical electric power version of the ITER experiment, the ARIES-1 fusion reactor design, and a modified version of ARIES-1 with stainless steel structural material. We find that an ITER power plant with a reasonable electric power conversion system would produce no net electric power at its target energy amplification factor of 10. The ARIES-1 conceptual power plant, as conceived, would have an energy amplification of 22 and an electric amplification of 6. If stainless steel were substituted for the SiC composite material assumed, the ARIES-1 electric power amplification would drop to roughly 3. We conclude that practical fusion power plants will likely require a near-ignition operating mode and qualified high temperature materials as prerequisites for commercial viability.

2018 ◽  
Vol 25 (2) ◽  
pp. 132-139 ◽  
Author(s):  
Andrzej Tomporowski ◽  
Józef Flizikowski ◽  
Weronika Kruszelnicka ◽  
Izabela Piasecka ◽  
Robert Kasner ◽  
...  

Abstract This paper describes identification and components of destructiveness of energy, economic and ecologic profits and outlays during life cycle of offshore wind electric power plants as well as the most useful models for their design, assembly and use. There are characterized technical conditions (concepts, structures, processes) indispensable for increasing profits and/or decreasing energy, economic and ecological outlays on their operation as well as development prospects for global, European and domestic markets of offshore wind electric power industry. A preliminary analysis was performed for an impact of operators, processed objects, living and artificial environmental objects of a 2MW wind electric power plant on possible increase of profits and decrease of outlays as a result of compensation of destructiveness of the system, environment and man.


2010 ◽  
Vol 132 (12) ◽  
pp. 57-57
Author(s):  
Lee S. Langston

This article presents an overview of gas turbine combined cycle (CCGT) power plants. Modern CCGT power plants are producing electric power as high as half a gigawatt with thermal efficiencies approaching the 60% mark. In a CCGT power plant, the gas turbine is the key player, driving an electrical generator. Heat from the hot gas turbine exhaust is recovered in a heat recovery steam generator, to generate steam, which drives a steam turbine to generate more electrical power. Thus, it is a combined power plant burning one unit of fuel to supply two sources of electrical power. Most of these CCGT plants burn natural gas, which has the lowest carbon content of any other hydrocarbon fuel. Their near 60% thermal efficiencies lower fuel costs by almost half compared to other gas-fired power plants. Their installed capital cost is the lowest in the electric power industry. Moreover, environmental permits, necessary for new plant construction, are much easier to obtain for CCGT power plants.


2018 ◽  
Vol 245 ◽  
pp. 07014 ◽  
Author(s):  
Evgeny Ibragimov ◽  
Sergei Cherkasov

The article presents data on the calculated values of improving the efficiency of fuel use at the thermal power plant as a result of the introduction of a technical solution for cooling the flue gases of boilers to the lowest possible temperature under the conditions of safe operation of reinforced concrete and brick chimneys with a constant value of the flue gas temperature, when changing the operating mode of the boiler.


Author(s):  
John T. Langaker ◽  
Christopher Hamker ◽  
Ralph Wyndrum

Large natural gas fired combined cycle electric power plants, while being an increasingly efficient and cost effective technology, are traditionally large consumers of water resources, while also discharging cooling tower blowdown at a similar rate. Water use is mostly attributed to the heat rejection needs of the gas turbine generator, the steam turbine generator, and the steam cycle condenser. Cooling with air, i.e. dry cooling, instead of water can virtually eliminate the environmental impact associated with water usage. Commissioned in the fall of 2010 with this in mind, the Halton Hills Generating Station located in the Greater Toronto West Area, Ontario, Canada, is a nominally-rated 700 Megawatt combined cycle electric generating station that is 100 percent cooled using various air-cooled heat exchangers. The resulting water consumption and wastewater discharge of this power plant is significantly less than comparably sized electric generating plants that derive cooling from wet methods (i.e, evaporative cooling towers). To incorporate dry cooling into such a power plant, it is necessary to consider several factors that play important roles both during plant design as well as construction and commissioning of the plant equipment, including the dry cooling systems. From the beginning a power plant general arrangement and space must account for dry cooling’s increase plot area requirements; constraints therein may render air cooling an impossible solution. Second, air cooling dictates specific parameters of major and auxiliary equipment operation that must be understood and coordinated upon purchase of such equipment. Until recently traditional wet cooling has driven standard designs, which now, in light of dry cooling’s increase in use, must be re-evaluated in full prior to purchase. Lastly, the construction and commissioning of air-cooling plant equipment is a significant effort which demands good planning and execution.


2019 ◽  
Vol 11 (2) ◽  
pp. 129-137
Author(s):  
Nurul Dyah Pratiwi ◽  
Isdiyato Isdiyato

Microhydro power plant (MPP) is a small-scale power plant that uses water energy. The process of energy change occurs in a device called a synchronous generator. when the synchronous generator is given an arbitrary load, then the voltage will change. These results cause voltage and frequency instability. This research was conducted to analyze the voltage and frequency instability in MPP. The research method used in this research is descriptive quantitative approach in the village of Soko Kembang, Petungkriyono District, Pekalongan Regency, Central Java. This study provides an overview and explanation of the problems regarding the voltage and frequency instability of Micro Hydro Power Plants. The results of this study are the highest and lowest voltage / frequency instability values, namely 235 volts / 51 Hz and 160 volts / 44 Hz, due to the influence of changes in load current, which can affect the rotational speed of the generator changes, resulting in unstable voltage and frequency generated by the generator, the rotational speed of the generator changes, resulting in unstable voltage and frequency generated by the generator. The solution is  add water power to rotate the shaft of the turbine and generator to be tighter, so that it can reduce the value of the decrease in electric power by losses to the turbine and generator. Large electric power can increase voltage and frequency without having to adjust the load, and the need for improvement of the ELC system in order to get a more effective value of voltage and frequency stability.  


Author(s):  
Karen S. Kim ◽  
Sean P. Bushart ◽  
Michael Naughton ◽  
Richard McGrath

The Electric Power Research Institute (EPRI) is a non-profit research organization that supports the energy industry. The Nuclear Power Plant Decommissioning Technology Program conducts research and develops technology for the safe and efficient decommissioning of nuclear power plants.


Author(s):  
H.-J. Hamel ◽  
Walter Jaeger ◽  
Volker Fattinger ◽  
Heinz Termuehlen

Since roughly 95 % of the fossil fuel reserves in the US are coal and only 5 % natural gas and crude oil, we need clean coal-fired power plants. Today, about 1400 pulverized-coal-fired power plant units are generating roughly 50 % of the US electric power.


Author(s):  
Thomas Schulenberg

A supercritical steam (or Rankine) cycle is used today for more most of the new coal-fired power plants. More recently, it has been proposed as well for future water-cooled nuclear reactors to enhance their efficiency and to reduce their costs. This chapter provides the technical background explaining this technology. Some criteria for boiler design and operation, like drum or once-through boiler design, fixed or sliding pressure operation and coolant mixing, are discussed in general to explain the particular challenges of supercritical steam cycles. Examples of technical solutions are given for two large-scale applications: a coal-fired power plant and a supercritical water-cooled reactor, both producing around 1000 MW electric power.


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