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Author Topic: Tidal power  (Read 1274 times)

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DORSEY11

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Tidal power
« on: Aug 19, 2010, 12:18 »
Tidal energy is one of the most reliable and predictable source of renewable energy. There are two ways of creating tidal power: tidal dams and ocean currents. Dams are based on using a barrage at a bay or estuary with a large tidal range. Power is generated primarily at ebb tides as the barrage creates a significant head of water, much like a hydroelectric dam. Tidal turbines take advantage of fast-flowing ocean currents to create energy. The horizontal axis ocean turbines are the more common ones and are only half the size of the wind turbines, which are producing 1 MW of power.
   
The ocean’s energy is created when the sun’s heat warms up the ocean surface water. The Ocean Thermal Energy Conversion (OTEC) is a method that takes advantage of this temperature difference for generating electricity. There are three types of electricity conversion systems: closed-cycle, open-cycle, and hybrid. Closed-cycle systems use the ocean's warm surface water to vaporize a working fluid, which has a low-boiling point, such as ammonia. The vapor expands and turns a turbine. The turbine then activates a generator to produce electricity. Open-cycle systems actually boil the seawater by operating at low pressures. This produces steam that passes through a turbine. The hybrid combines both closed-cycle and open-cycle systems. OTEC is a successful system of power generation that has been in use since 1974. This system makes it wise thing to Invest in Tidal Energy.


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Offline Stromboli

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Re: Tidal power
« Reply #1 on: Aug 19, 2010, 21:21 »
The problem with green energy is that our governments dont want it to work until fusion power is grasped. it is against capitalist reason.

if we all get free energy, what will happen to the oil companies,..... massive reduction in size. less jobs, less money, less consumerism, less money, less jobs and less consumerism

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Re: Tidal power
« Reply #2 on: Aug 19, 2010, 22:58 »
Cheap energy to start with and even cheaper as time and technology progresses= cheaper overheads for production and therefore massively better export potential without sacrificing salaries which would lead to higher employment and therefore higher internal consumerism with higher Tax revenues! What kind of Government would be against that?

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Offline Lancelot

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Re: Tidal power
« Reply #3 on: Aug 20, 2010, 09:40 »
How does it compare with conventional production regarding the size and amount of equipment involved to produce only a small amount of the demand.  My understanding, although I'm not against alternative power, is that wind generators each only produce a few Megawatts so you need thousands of them to even approach the output of one power station.  And we have dozens of power stations in the U.K.  I see other forms of power production as an added bonus and not as a main source so their use is limited.

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Offline Stromboli

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Re: Tidal power
« Reply #4 on: Aug 20, 2010, 15:41 »
tidal power is much more productive than wind. The problem is that although we can all see this works, especially with the large 'wing' generators and although the are out of sight, under water, the government does not seem to like them. Why?

If this was taken into popular means of power provision only the power companies would benefit, not the oil and gas and solid fuel companies. These companies domnate the capitalist landscape.

There is no way of a capatilist nation such as the UK to make money from wind, tidal, hydro or even nuclear power as everyone has the technology (in the latter many have the technology).  The next wave and saviour of our way of life is fusion power. Whichever nation proves it's worth and makes it viable will be able to license it will have a massive wealth generating force in it's core.

Nuclear fusion, the process that powers the Sun, can play a big part in our carbon-free energy future. Culham is one of the world's leading fusion research laboratories. Our scientists and engineers are working with partners around the globe to develop fusion as a new source of clean energy for tomorrow's power stations.

It will be clean, green and franchiseable. If in Culham we can produce this, which we think we can.. sorry, when I say we, I mean the British, we will have autonomy over the process the world over.

As it stands OIL is the dominating factor followed by gas and solid fuels. As it stands if wind or tidal power comes into force countries like ours will dissipate their power to others which means less wealth for us.

Some would argue that this is a good thing but would you?

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Offline Stromboli

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Re: Tidal power
« Reply #5 on: Aug 20, 2010, 15:42 »
Cheap energy to start with and even cheaper as time and technology progresses= cheaper overheads for production and therefore massively better export potential without sacrificing salaries which would lead to higher employment and therefore higher internal consumerism with higher Tax revenues! What kind of Government would be against that?

Only if you live in a manufacturing and exporting country, we in the west do not

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