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How long does a tidal power last?
Tidal power is a renewable energy source that can last indefinitely as long as there are tides. Tidal power plants can operate continuously, generating electricity whenever the tides are moving in and out.
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.
How long does tidal energy last?
Tidal energy is considered a renewable energy source because the gravitational forces of the moon and sun that create the tides are continuous and predictable. As long as the Earth has these celestial bodies and continues to rotate, tidal energy will persist.
Is there use of tidal energy in England?
There are no tidal power stations in England yet (there's only one in Europe, and that's in France, at the mouth of the Rance River). The Severn Estuary is the third most suitable place in the world for tidal power and there is a project under way to develop it. The tidal range is 14 meters, very appropriate. The river is 10 miles across at the best point, so a barrage/bridge would be built across, costing more than twenty billion British pounds (US$30 billion). This would also act as a bridge from England to Wales and should last for 200 years. It would be the biggest renewable energy station in the world, if built.
Who invented the gas turbine?
leonardo devinchi (look up last name)
What is the last ocean in Arkansas?
southern ocean
Why you use cooling towers in thermal power station?
This is to cool the steam turbine condenser, where the steam outlet from the turbine's last stage is condensed before returning to the boiler feed pump inlets. The cooling towers circulate water that passes through tubes inside the condenser, separate from the steam/water in the boilers.
How much energy can a tidal facility produce in one year?
Sihwa Lake Tidal Power in South Korea generates 250 MW of electricity, and has been in operation since last year. Korea has plans to begin construction of a 1 GW tidal power plant in 2017. Since a watt is equal to one joule per second, a gigawatt is 3.16x10^16 joules per year. Theoretically, much larger tidal generation facilities could be built, but there are practical economic and environmental considerations to factor in that.
How have estuaries changed over the last few years?
Climate changes including rising sea levels, altered rain patterns, drought, and ocean acidification threaten to degrade estuaries. Rising sea levels will move ocean and estuarine shorelines by inundating lowlands, displacing wetlands, and altering the tidal range in rivers and bays.
What is purpose to spray in exhaust hood of steam turbine?
The purpose of exhaust hood spray is to decrease the temperature of steam turbine last stage that is probably LP. This is operate on low load specially at start up and shut down of steam turbine when the temperature at the outer most edge of the turbine blades of that stage is very high and As we know that the steam flow also decrease The temperature of turbine blade.
How long will hydro power energy last?
as long as it rains, and water is stored at a higher elevation than the turbine or impeller shaft of a machine. The power is stored as potential energy and is converted to kinetic energy by the power generating station. This station may convert this potential energy into electricity, in the case of a electrical generator, or the power can be used to directly power a shaft that will run machinery.
What are the last 2 steps in an electrical power plant?
The last two steps are:The steam or gas spins the turbinesthe turbines then turns the electric generators producing elecricity
