Posts Tagged ‘turbines’
February 3rd, 2010 | 
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Backup Power is also known as an Emergency Power System, Backup Power Systems are types of systems that may include generators, lighting and many other apparatus, to provide a backup of resources (power) incase regular power systems fail or incase of a crisis. Backup Power is by many different people / companies / industries around the world, these include: Residential Homes, Data Centre, Modern Naval ships, Scientific Laboratories, Telecommunications Equipment and one of the most important places where Backup Power is needed is in Hospitals. Hospitals greatly rely on the knowledge that should anything happen to their power system they have Backup Power in place. A hospital could not run efficiently with out it, if there was to be a power failure every single piece of medical equipment in a hospital would shut down. This could be minor things like computers or monitoring equipment& but in some cases this could be dangerous, if a patient was on a Life Support Machine that machine would fail rendering it useless and putting the patients life at risk. Every Hospital should have its own form of backup power, usually backup generators and large hospitals may even have multiple of these incase the unlikely incident of a backup Power system also failing.
The History of Backup Power
Backup Power systems can date back to as early as World War II, they were used on Naval ships. These Naval Ships were at danger of loosing the function of their steam engines during combat, the steam engines powered the steam driven turbines for the generator. In this case they used one or often more than one diesel engines to drive back up the generators. Early transfer switches were not automatic tho and they relied on manual operation. There would be two switches that would be placed horizontally, in line and the on position of the switch would be facing each other. A rod was placed in between the two switches and in order for the switch to function one source must be turned off, when switched off this moves the rod to the other side where the other source is turned on.
Control of the Backup Power System
To avoid a long supply of electric wires a central battery system with automatic controls is used, this is located in the power station building itself. This type of system is used for a 208 VAC Backup Power Systems. The central battery system of the Backup Power consists of lead-acid battery cell units, these make up a 24 or 12 VDC System, stand-by cells are also used each with its own battery charging unit. Voltage sensing units are also required and they must be capable of receiving 208 VAC. Incase the 208 VAV station supply fails an automatic systems is required, this automatic system must be able to signal and activate the emergency supply unit.
Nuclear Plants also require a for of Backup Power, however this is slightly different and is know as EDG’s (Emergency Diesel Generators).
About Author:
Daniel Owen writes about Back Up Power. To know more about Back Up Power, visit http://www.businessmagnet.co.uk
Article Source: Backup Power
Harnessing the power of water has been used for centuries for many useful purposes. Initially it was used for irrigation and operating various machines, such as windmills and dock cranes. But these days it has a more important use: as a renewable source of electricity.
So what is hydro power?
Well, basically it is the generation of electricity by using the natural force of water.
And how is hydro power generated ?
It is generated in 3 different ways: hydroelectric power, tidal power, and wave power.
Hydroelectric Power:
This is the most common form of hydro-power, making up the majority of all renewable energy produced. Electricity is produced in hydroelectric dams where the force of falling water drives massive turbines.
The advantage of this type of power is that not only does it produce electricity, but the dam helps collect water for our use, so it’s a power and water source in one. Furthermore, the force of the water is so strong that megawatts of electricity can be produced to help power entire cities.
There is also a large amount of control over how fast the turbines spin. If more power is needed, the controller simply opens the wicket gates more, which allows more water through the turbines and spins them faster.
The disadvantage is the devastating effect dams can have on plants, animals and even humans. When dams are built they flood large tracts of land that were once occupied by various species and communities of people. Furthermore, the water-borne animals, such as fish can also be affected. An example would be salmon that are blocked from swimming upstream to spawn by the newly erected dam.
Tidal Power:
The second most popular type of hydro power, tidal energy is produced by currents caused from the natural ebb and flow of the tide.
This has been achieved by France and Russia since 1966 in areas with a large tidal range, such as bays and estuaries. One of the systems of tidal power works by trapping water at high tide with a tidal barrage, then releasing that water in one quick burst at low tide. This gushing water drives turbines to produce power.
Although the tides are very predictable and consistent, the problem with this system is that the turbines only operate every 6 hours (once every tide).
A second, more recent, tidal system looks very much like an underwater wind turbine. Large windmill like turbines are sunk in shallow water, where they are slowly spun by shifting tidal water.
The advantage of this system is that it is an adaptation of an already technologically advanced wind turbine – so all the refinement has been done. Furthermore, the dense water is far more efficient than wind at spinning these turbines. Thus even slow-moving water is just as effective as a strong wind.
The drawback is that the current systems can only be built in shallow water, where tidal activity is greatest. This is very limiting since many other economic activities – like oyster farming – occur in the shallows. Furthermore, these structures can damage marine life on the seafloor.
Wave Power:
Tim McDonald and his wife have been living off the grid since June 2008. If you want to learn to get off the grid and save thousands on your electricity bills, then be sure to Try Earth4Energy For FREE, and learn to make your own diy renewable energy at home.
Article Source: Using Hydro Power For Renewable Energy
It is now fully possible to get solar and wind power for residential homes. Costs are coming down, and more and more people are jumping into the benefits of solar and wind power for residential homes. As you read this article, you will discover more about solar power and wind power for residential homes.
As you read this article about solar and wind power, you will discover more about:
* What Is Solar And Wind Power?
* Why Use Solar And Wind Power To Power Your Home?
* How To Get Solar And Wind Power For Your Home?
* Tips To Getting Solar And Wind Power For Residential Homes!
* What Is Solar And Wind Power?
It may seem like a basic question, but it is good to understand the principle fully. Solar energy is basically energy from light. So the parts to residential solar energy systems take the light photons, and convert them into electric.
This applies with wind power also; however, there is a marked difference with how they operate. Basically the wind power generators have turbines which turn with the power of the wind, with a generator, this produces electric which when converted to a suitable voltage and amps, will provide your home with electric, and all for free!
The difference between solar and wind power, is that the Sun’s light also provides heat in the form of ultraviolet rays. This can also be used to heat water, without the need to generate electric.
* Why Use Solar And Wind Power To Power Your Home?
Because solar energy is solar energy, the source is from our Sun. This makes it free energy! As this is fantastic, considering that if we could collect all the light emitted onto Earth in 1 hour, we would have enough energy for humanities entire needs for a year!
That is big, and when you do your bit, and utilize solar power or wind power, you ultimately help in creating a better world, with free energy! Wind power is caused from the tides, so again we have a lot of potential to make use of these sources of energy.
* How To Get Solar And Wind Power For Your Home?
There are many companies springing up to help you get solar and wind power for your home. They can help you find the right equipment, and even may be able to give you advice about selling your excess energy!
* Tips To Getting Solar And Wind Power For Residential Homes!
Solar and wind power for residential homes is not cheap. The equipment can be expensive, and take years to recoup your investment. Luckily there are many grants that can help you get solar power for the home or wind power for the home at a much better price, than if you had to pay for it all yourself.
Did you know that you can resell your excess energy to the power companies? Not all will buy your excess energy, but there are a few companies who do. For example, in the UK nPower buys green energy.
Discover more about solar power for the home, and solar and wind power for residential homes. Visit www.homesolarenergysystems.info/
Article Source: Solar And Wind Power For Residential Homes