Why steam is condensed after coming from turbine?

As the water used in boilers is usually quite purified it is expensive to produce so it makes sense to remove the little heat energy remaining in the steam after doing work in the turbine which allows it to condense back to water to be used again.

Why is the steam from a turbine not directly sent to the boiler rather than the condenser?

In the case of back pressure turbine steam is not sent to the condenser. In this case exhaust steam of turbine have pressure more the the atmospheric pressure. So this steam is used in process. In the case of condensing turbine stem is sent to condenser to achieve more enthalpy drop to get more work done.

What happened when steam is condensed?

When liquid water solidifies it becomes ice.

How does a steam turbine spin?

As the name implies, a steam turbine is powered by steam. As hot, gaseous steam flows past the turbine’ spinning blades, steam expands and cools, giving off most of the energy it contains. This steam spins the blades continuously. The blades thus convert most of the steam’s potential energy into kinetic energy.

How is steam converted into energy?

Making electricity from steam is generally a three step process, where water is converted to high pressure steam, then the high pressure steam is converted to mechanical rotation of a turbine shaft, and the rotating turbine shaft then drives an electric generator.

In which type of condensed water and steam do not mix directly?

2. Surface Condensers. In surface condensers, there is no direct contact between the cooling water and the steam that is to be condensed. The heat transfer between steam and cooling water is by conduction and convection.

How steam is condensed?

When water is heated it evaporates, which means it turns into water vapor and expands. At 100℃ it boils, thus rapidly evaporating. And at boiling point, the invisible gas of steam is created. The opposite of evaporation is condensation, which is when water vapor condenses back into tiny droplets of water.

What changes steam into liquid again?

When steam or water vapor cools down, it turns back to liquid water. This is called condensing.

What is true about steam as it condenses?

As we said above, when water evaporates, it expands 1600 times larger in volume to become steam. When it condenses, it compresses back into tiny droplets of water. And we call those tiny droplets of water condensation.

Why is steam not sent to the condenser in back pressure turbines?

This basically depends on the energy or steam balance of your plant. In the case of back pressure turbine steam is not sent to the condenser. In this case exhaust steam of turbine have pressure more the the atmospheric pressure. So this steam is used in process.

Why doesn’t a steam turbine use water to power it?

All the heating does is cause a phase change and add energy, not produce the pressure needed to run the turbine. Boiling water into steam doesn’t raise its pressure unless it’s confined, and that’s not how turbine-based engines work.

How does the condensing steam cycle work?

The condensing steam cycle is shown diagrammatically in Figure 22.8. The fuel is fired in a boiler which converts the heat released from combustion to steam at high pressure and temperature. This steam is then expanded through a turbine for generation of electrical power.

Does boiling water into steam raise the pressure?

Boiling water into steam doesn’t raise its pressure unless it’s confined, and that’s not how turbine-based engines work. In a continuous-flow process in a power plant where steam is constantly produced in the boiler and spun through a turbine, the steam can’t be at any higher pressure than the feed water supply.