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The turbine heat rate of a steam turbogenerato is the ratio of thermal input: power generated. It is often expressed in kJ/kWh. The efficiency of the turbogenerator is simply calculated from this.
The plant heat rate is the ratio of fuel energy into the plant: power generated. It is greater than the turbine heat rate, because not all of the fuel's thermal energy can be captured by the boiler, and also power station services such as fuel handling, flue gas cleaning etc consume power. Consequently, more fuel is needed for each unit of useful net power produced. Plant heat rate is often expressed in kJ/kWh or Btu/kWh.
The fuel energy input used in the plant heat rate calculation may be on a higher heating value (HHV) or a lower heating value (LHV) basis, and the plant power output, although usually on a net (net of plant own consumption) is sometimes on the basis of that at the generator terminals. Whatever is used should be made clear, but it often is not.
What else can I help you with?
What is reheat factor in power plant?
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.
What is the difference between back pressure steam turbine and condensate steam turbine?
In a back pressure turbine all available energy from the inlet steam is NOT used to generate power; steam exhausts at a tangible pressure and is then used for, usually, heating or chemical processing. In a condensing turbine, all the inlet steam does mechanical work right down to the lowest pressureafter which it is condensed in a heat exchanger
What is heat rate of steam turbine How to calculate heat rate of steam turbine?
manish
How do calculate heat rate turbine gas?
Turbine cycle heat rate is a measure of the turbine efficiency. It is determined from the total energy input supplied to the turbine divided by the electrical energy output. The energy input is the difference between the energy in the steam supplied to, and leaving from the turbine. The total energy supplied is the sum of the steam mass flow rates to the turbine multiplied by their respective enthalpies. The energy leaving is the sum of mass flow rates exiting the turbine multiplied by their respective enthalpies. Take the difference in the total energy supplied and leaving, divide by the electrical output and this gives you heat rate, typically expressed in Btu/kWh or kJ/kWh. This is easy for a single source of steam passing through the turbine to a condenser, but gets a bit more tricky for reheat turbines with multiple extractions as all the streams in and out have to be accounted for.
What is the difference between heat and product analysis in steel Why should this be?
what is the difference between product analysis and heat analysis
Does heat energy make wires in a generator spin?
In a way. It is the difference between temperatures at the inlet and outlet of the steam turbine (generically, a 'heat engine') which results in the turbine spinning -this, in turn, causes the generator to spin.
What is the energy released from a nuclear power plant?
Electric. The nuclear energy produces heat, heat boils water, steam drives turbine, turbine makes electircity.
What turns the turbine in a nuclear power plant?
In a nuclear power plant, the turbine is turned by steam produced by the heat generated from nuclear fission in the reactor core. The steam drives the turbine which then rotates a generator to produce electricity.
Why vacuum is created in condenser on steam turbine?
Firstly, vacuum is being created in turbine exhaust and condenser rather than being required. It is created to reduce the back-pressures and to improve the turbine efficiency. Also, with vacuum the designers can design large size last stage blades of LP turbine for maximizing the turbine output.
Which does not provide the energy to spin a turbine?
A nuclear power plant does not directly provide the energy to spin a turbine. In a nuclear power plant, nuclear fission generates heat, which is then used to produce steam that spins a turbine to generate electricity.
What is reheat factor in power plant?
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.
How do you get power from a nuclear power plant?
The controlled nuclear reaction generates large amounts of heat. That heat boils water, which creates steam. The steam turns turbine blades, and the turbine generates electricity.
What spins the turbine of coal-burning power plant?
Steam produced by heating water with the coal's heat energy spins the turbine of a coal-burning power plant. The high-pressure steam flows through the turbine blades, causing them to turn and drive the generator that produces electricity.
What is the difference between the way a fossil fuel power point generates electricity and the way a nuclear power plant generates electricity?
A fossil fuel power plant burns coal, oil, or natural gas to heat water and produce steam, which turns a turbine connected to a generator to produce electricity. In contrast, a nuclear power plant uses nuclear reactions to heat water and produce steam to turn the turbine and generator. Nuclear power plants do not emit greenhouse gases during operation, while fossil fuel power plants do.
From what does a geothermic power plant get energy?
From the earth's heat deep under the ground. It basically runs a heat engine on the difference between the Earth's internal temperature and ambient surface temperature. The greater the difference, the more efficient the plant will be (this is true in general of all power plants no matter how they're fueled - the bigger the difference between the "hot side" and the "cold side" of the loop, the more efficient the plant is).
What is the difference between carnot heat engine and a heat engine?
difference schematic diagram between carnot heat engine and heat engine
What is the difference between back pressure steam turbine and condensate steam turbine?
In a back pressure turbine all available energy from the inlet steam is NOT used to generate power; steam exhausts at a tangible pressure and is then used for, usually, heating or chemical processing. In a condensing turbine, all the inlet steam does mechanical work right down to the lowest pressureafter which it is condensed in a heat exchanger
