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because if the steam is not superheated the remaining water droplets reduce efficiency and can cause corrosion and pitting.
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Nearly! Saturated steam, as non-superheated steam is called, is really only steam at the pressure and temperature in the boiler. Once it starts to expand as a gas in doing its work, the pressure and temperature fall and condensation will set in, leaving less and less useful water-vapour to act as a gas. Hence, as you say, the efficiency falls.
Wiki User
∙ 8y ago
Wiki User
∙ 11y agoTwo reasons. Superheated steam has zero moisture content, thus corrosion is reduced. Secondly, superheated steam carries more energy per pound of steam without increasing the steam pressure, thus less heavy materials need to be used for the same power.
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Why not super heated steam used in nuclear power plant?
Actually, superheated steam is used in nuclear power plants. It is part of the goal of extracting the most energy possible from the steam cycle.
How steam power plant work?
Steam is used to drive turbines, which drive alternators -the steam having been superheated (i.e. beyond 100oC) in large boilers, by burning coal, oil, or other fuels, or by nuclear reaction.
How can you use superheated steam to grow plants?
steam will kill just about any plant and superheat steam even more so. they are used for cleaning and disinfecting greenhouses and soil.
How much energy is used per kilogram of steam?
That would depend on if the steam is superheated dry steam or not and if superheated dry steam its temperature. It should be possible to google "boiler equations" or "boiler design" to get details.
What is used to carry steam and water in a power plant?
We see the wide use of pipe to carry steam and water in a power plant. Insulation is applied where necessary.
What is a steam generator used for in a fossil fuel power plant?
To convert the heat of combustion to steam which can be used in an engine.
Why saturated steam is used in exchangers frequently rather then superheated?
The heat transfer coefficient of superheated steam is poor. Saturated steam has a better heat transfer coefficient, and also most of the heat transferred from steam occurs because of the condensation phase change.
What are the differences between a coal power plant and a hydroelectric power plant?
Coal is used in furnaces to heat water in a boiler to superheated (above 100 degrees Celsius) temperatures, and this steam is used to drive a turbine which, in turn, drives an alternator. A hydroelectric plant uses the vertical fall of water to drive a water turbine which drives an alternator.
Is superheated steam suitable for air heaters instead of saturated steam?
No, superheated steam gives off little energy. Most of the heat given off by steam is the latent heat of condensation as it undergoes a phase change from vapor to liquid. Superheated steam could first be "desuperheated" by adding water until it reaches the saturation point, then used for heat transfer processes.
In a nuclear power plant what is used to change water into steam?
Heat from the nuclear reaction changes water to steam.
What is work of gland steam cooler in steam power plant?
gland steam cooler is used to cool steam of gland sealing comes from turbine
Describe the role of steam in a nuclear power plant?
Steam in nuclear power plants is used to drive turbines for generation of kinetic energy.
