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It is the efficiency of the power plant.
First in order to calculate the heat content of a particular type of coal, an ultimate analysis must be done. Then the combustion efficiency of the coal must be calculated, the boiler efficiency is then determined by a boiler "acceptance test", or heat balance. The steam is then run through an engine driving a generator to determine the total plant efficiency thus determining how much coal is burned to produce a set amount of electricity. Several publications on Steam power plant operation explain these efficiency tests in more detail.
STG stands for steam turbine generator which is one component of a power plant
It is around 35 to 40 %
Steam spins the turbine of coal-burning power plant.
A modern combined cycle gas turbine/ steam turbine power plant can reach almost 60% efficiency.
The reheat factor in the steam turbine refers to the Thermodynamic effect on the turbine efficiency. Others factors includes the cumulative heat, and the steam turbine condition curve.
The amount of energy transferred from the steam is a function of the temperature difference between the input and output of the turbine. Also, superheating the steam ensures that there are no water molecules that can damage the turbine blades.
Coal releases about 14-15,000 btu's of heat per pound. This will on average produce about 12 lbs of high quality superheated steam. With a **steam rate of an engine at about 4 lbs of steam per kilowatt produced, this coal plant can produce about 3 kilowatts per pound of coal burned. So to produce 10 MW of electricity this hypothetical plant will burn about 3,334 lbs. of coal per hour. In a day the coal consumed will be about 80, 000 lbs or 40 tons. *Actual fuel conditions, combustion efficiency, boiler efficiency and engine efficiency would need to be determined for any particular power plant to determine actual coal usage in that plant. **steam rates of different power plants can range from about 3.5 lbs steam/ KW to more than 10 lbs of steam/ KW.
thermal
George Frederick Gebhardt has written: 'Steam power plant engineering' 'Steam power plant engineering' -- subject(s): Steam power plants
It is the efficiency of the power plant.
A miniature steam power plant is a place where willy wonka allowed his oompa loompas to stay on holidays.
First in order to calculate the heat content of a particular type of coal, an ultimate analysis must be done. Then the combustion efficiency of the coal must be calculated, the boiler efficiency is then determined by a boiler "acceptance test", or heat balance. The steam is then run through an engine driving a generator to determine the total plant efficiency thus determining how much coal is burned to produce a set amount of electricity. Several publications on Steam power plant operation explain these efficiency tests in more detail.
first mention which power plant in steam pp out come of the steam is cooled after it again passes through into the turbine
We see the wide use of pipe to carry steam and water in a power plant. Insulation is applied where necessary.
The energy efficiency of a typical nuclear power plant varies, depending on its design, but a typical value might be around 33%.