What is the most efficient cycle for a steam power plant?
The Rankine cycle is the ideal cycle for vapor power plants; it includes the following four reversible processes: 1-2: Isentropic compression Water enters the pump as state 1 as saturated liquid and is compressed isentropically to the operating pressure of the boiler.
What are the essential requirements of steam power station design?
The steam necessary for the plant is produced in a boiler that has a maximum allowable temperature and pressure of 550°C and 8000 kPa, respectively. There is a pressure drop of 150 kPa across the boiler and a pressure drop of 5 kPa in the condenser. All other pressure drops in the pipe are negligible.
Which fuel is used widely in power plant to generate steam?
Coal
What fuel is used for power plants?
Coal, gas and oil Fossil fuel power plants burn coal or oil to create heat which is in turn used to generate steam to drive turbines which generate electricity.
Which energy source is one that is used to boil water to make steam in power stations?
Answer: Among resource energies, coal and natural gas are used to generate electricity by combustion (thermal power), Uranium by nuclear fission (nuclear power), to utilize their heat for boiling water and rotating steam turbine.
Which fuel is used in thermal power plants?
What are the problems of thermal power plant?
For example, poor quality of boilers and air pre-heaters could lead to high levels of erosion, corrosion, oxide deposits or leakages. All these, and many other related factors, are costly drags on the efficiencies of the thermal power plants, and consequently, also add to the environmental and social burdens.
Why deaerator is used at thermal power plant after condenser?
In thermal power plants, the deaerator is used mainly to. Remove air from condenser. Increase feed water temperature. Reduce steam pressure.
Why deaerator is kept at height?
Why deaerator is installed at a certain height from the pump? Explanation: Deaerator is installed at a certain height from the pump so as to maintain a optimum pressure before suction. Explanation: The feedwater heaters after the deaerator are often called low pressure heaters(l.p.).
Why deaerator is used in boiler?
Deaerators are mechanical devices that remove dissolved gases from boiler feedwater. Deaeration protects the steam system from the effects of corrosive gases. It accomplishes this by reducing the concentration of dissolved oxygen and carbon dioxide to a level where corrosion is minimized.
What is the use of condenser in thermal power plant?
In thermal power plants, the purpose of a surface condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generator or boiler as boiler feed water.
Why do we need vacuum in condenser?
In a power plant, the primary use of vacuum systems is to remove air and other noncondensable gases from the shell side of the condenser in order to maintain design heat transfer and thus design vacuum.
Why do we use condenser?
The function of the condenser is to condense exhaust steam from the steam turbine by rejecting the heat of vaporisation to the cooling water passing through the condenser. The temperature of the condensate determines the pressure in the steam/condensate side of the condenser.
Why do heat engines need a condenser?
In thermal power plants, the purpose of a condenser is to condense the exhaust steam from a steam turbine to obtain maximum efficiency, and also to convert the turbine exhaust steam into pure water (referred to as steam condensate) so that it may be reused in the steam generatoror or boiler as boiler feed water.
Which heat is remove in condenser?
LATENT HEAT – CONDENSER The latent heat required to condense this gas is rejected from the refrigerant into the outside air. This process is called condensation, thus the coil which this occurs is referred to as the condenser.
Is boiler a heat engine?
This shows another heat engine: the steam cycle of a steam-electric power plant. The boiler: heat is transferred from a combustion process (or from a nuclear fission process) to the high-pressure water, creating high pressure steam (ie, thermal energy).
What are the examples of entropy in real life?
A campfire is an example of entropy. The solid wood burns and becomes ash, smoke and gases, all of which spread energy outwards more easily than the solid fuel. Ice melting, salt or sugar dissolving, making popcorn and boiling water for tea are processes with increasing entropy in your kitchen.