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Why the water cooled condensers have to be used in the water steam cycle of power plant?
Some of the heat is used to produce electricity, the rest is waste and put into the environment.
Much of the energy of the heat is lost as the steam passes through the turbines, with the heat being converted to mechanical energy, and then to electrical. This accounts for about 35% to 40% of the energy of the heat, cooling it by the removal of that heat.
It would be possible for residual heat to be tapped for conversion into electricity, also, but this is not done in most nuclear reactors. Converting it to electricity would get another 10% or so of the heat of the remaining steam, cooling the steam further.
The remainder of the heat is waste. It is dumped into the environment, primarily into the air, by using heat exchangers and cooling towers. In this system, the steam is used to heat water, condensing in the process. The water is then used to heat air in the cooling tower.
Another way to get rid of waste heat is to use heat exchangers to heat a nearby body of water, such as a lake, the ocean, or a river. This is usually done only in the summer, when the atmosphere is warm and the cooling towers are not efficient enough to do their work.
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Limitations of the Carnot cycle for the operation of the steam power plant?
The Carnot cycle gives the theoretical maximum efficiency of an engine operating between two heat reservoirs. The Carnot cycle is an idealized engine cycle that is thermodynamically reversible. Real systems such as power plants are not reversible, and the entropy of a real material changes with temperature (which is not accounted for by the Carnot cycle). A steam power plant operates closer to a cycle known as the Rankine cycle.
What is the functions of heat power cycle in a steam power plant?
There is no such thing as a heat power cycle in a steam engine.The power stroke, or strokes, result from pressurised steam being let into the cylinder and moving the piston.
How does a diesel power plant works?
A diesel powerplant uses the diesel power cycle for energy generation. A diesel power plant is one using a diesel engine to run a generator coupled to it. A generator produces power when it rotates.
What is the positive of nuclear power plant?
what is negative of the nuclear power plant
What is house load of power plant run parallel with grid and how to calculate it?
House Load of a Power Plant is also known as Auxiliary Power Consumption or Units Used on Works.It is the electrical power needed to drive the pumps and fans that support the operation of the power plant.Typically the power plant metering is set up to measure the electricity produced by the generator at the terminals. A seperate meter will measure the electricity used by the auxiliaries, at the unit transformer.Auxiliary Power Consumption is often expressed as a percentage of Units Generated, so:Aux Power = ( Units Used on Works / Units Generated ) x 100 %% MWh MWhTypical Auxiliary Power Consumption depends on the type of plant:Plant Type%Coal-fired Thermal6.5 - 8.0Open Cycle Gas Turbine2.5 - 3.5Combined Cycle Gas Turbine1.0 - 1.5
What is the use of cooling tower in power plant?
first mention which power plant in steam pp out come of the steam is cooled after it again passes through into the turbine
Limitations of the Carnot cycle for the operation of the steam power plant?
The Carnot cycle gives the theoretical maximum efficiency of an engine operating between two heat reservoirs. The Carnot cycle is an idealized engine cycle that is thermodynamically reversible. Real systems such as power plants are not reversible, and the entropy of a real material changes with temperature (which is not accounted for by the Carnot cycle). A steam power plant operates closer to a cycle known as the Rankine cycle.
What is the efficiency of thermal power plant?
A modern combined cycle gas turbine/ steam turbine power plant can reach almost 60% efficiency.
Does combined cycle power plant has a boiler?
No It has heat recovery steam generator
What is the functions of heat power cycle in a steam power plant?
There is no such thing as a heat power cycle in a steam engine.The power stroke, or strokes, result from pressurised steam being let into the cylinder and moving the piston.
How does energy changes from one form to another in a coalburning power plant?
A power plant works like a heat engine. It receives thermal energy as heat and transforms part of it to mechanical energy discarding the rest as heat to the surroundings. In a coal burning power plant, the coal's chemical energy is liberated as heat and used to generate steam (at the steam generators) at high temperature and pressure. This high energy steam (large enthalpy content) is fed to steam turbines that are coupled to large electricity generators responsible of the plant's electric power output. The exhausted steam (at lower temperature and pressure) is sent to condensers which cool down the steam flow to get a flow of cool liquid water (The condensers require cold water to condense the steam)*. The cool condensed water flow is sent to a pump to lift its pressure high enough to be introduced to the heating system equipment (steam generators). The working fluid (water) has run a a full cycle. *The plant requires a "heat sink", a cooling source for the condensers cooling water. That is why power plants are constructed by a river or by the sea. If that is not an option, cooling towers are required.
What are reasons for over speed tripping of steam turbine genarator in a combined cycle power plant?
wHAT??
What is the name of the device in a power plant cycle that is used to remove oxygen from feedwater that is sent to the boiler?
deaerator
What is the SI unit of vibration in power plant?
The unit is hertz (Hz) equal to 1 cycle/second.
Heat Rate in Natural gas based Combined Cycle Power Plant?
today rate of natural gas
What energy is transformation in a nuclear power plant?
they only make food for us, not a cycle, so non-living
How does a diesel power plant works?
A diesel powerplant uses the diesel power cycle for energy generation. A diesel power plant is one using a diesel engine to run a generator coupled to it. A generator produces power when it rotates.
