Energy using the power of tides in Brazil

Just today I came across a wave energy video today. This system is developed in Brazil. The technology is pretty simple but very effective. There is great amount of energy in ocean tides generating vertical displacement of water , the bouys attached to the arms would create a motion that would get the attached pump in action pumping water a high speed , this high speed water moves a turbine and  thus electricity is generated. 

Countries having long coastlines have a great advantage if this technology is used. Many gigawatts of electricity can be generated. 

Here is the video, its in Brazilian Portuguese , but it has English subtitles. The technology is pretty simple. Once installed, except for maintenance of the system , there is no other cost involved at all. It will provide green electricity of decades.

Earlier in this blog I have mentioned about the Davidson - Venturi Hill turbine and Searaser. These two systems also generate electricity harnessing the waves in the sea.

The waves of sea are caused due to the gravitational effects of Sun and Moon. 

 If administrators around the world have a good vision for the future of humanity they will adopt green technologies like this very soon.

Searaiser

        I have mentioned about tidal energy lots of times in  my blog , there are different ways in which the energy from the ocean currents can be tapped into and one of the ways is this searaser technology .

     The following video demostrates this technology SEARASER VIDEO

             The diagram shown below shows how the setup work the searaser pump units that are fixed in sea the top portion moves up and down depending on the tide and this motion moves the piston attached to it which pumps the water through the pipes to the reservoir where the water is collected and then water is made to flow downstream thereby moving the turbine and creating electrical energy , its a pretty simple setup and ones the things are in place except the maintentce costs the electricity generated is free.

          

                There is absolutely no fuel costs involved since the tidal energy of the sea which is caused due to the gravitational effects of moon and sun is used , the tides are regular and will stay there forever unlike rivers which may go dry during summers in some places. 

       The energy thus generated is totally green and renewable does not cause any pollution at all. 

      India has over 7000 kms of sea cost , the tides in Bay of Bengal and Indian Ocean are very high and this technology can be effectively tapped into to generate electricity. With such a long coastline many terawatts of electricity can be generated , this would totally eliminate the need to use coal , and imported crude oil for energy purpose also the energy will be very cheap around 30% cheaper than electricity from nuclear power plants. 

         Currently in India 85% of the crude oil has to be imported by investing in renewable technologies like this one the dependence on foreign oil will come down. Its better to have cars running on electricity generated from renewable energy than have them run on imported petrol. 

           Tidal energy will save the whole world not only billions of dollar but will reduce the CO2 and other SPM  emission into the atmoshphere which is responsible for global warming. 

         Investing in green and renewable energies like tidal energy , solar energy , wind energy will lead to cleaner , greener future of the world . 

         

       

                  

      

Tidal Energy with Davidson Hill Venturi turbine.

A great source of energy largely untapped is is the energy from the ocean currents it is also called Tidal Energy. The tides in oceans are caused by the gravitational effects of the sun and moon. Tides follow a pattern and can be predicted years in advance unlike wind. Water is 832 times denser than air so a relatively small turbine can produce large amounts of electricity as compared to Wind Turbines. 

This is the diagram of the davidson hill venturi turbine , it makes use of the Venturi effect the flow of ocean current is in the smaller side of the turbine so at the other end where the area of the crossection is larger there  velocity of flow of water is reduced thus creating a low pressure area which leads to more current rushing towards that side via the turbine thus making the turbine rotate a very high amount of efficiency is achievable through the Davidson Hill Venturi turbine ,This video of Davidson Hill Turbine will explain more .

Tidal energy is a largely untapped but a very promising source of energy , and it would have very low maintenance costs. This link would shows that a DHV turbine with a 10 meter rotor will produce a few megwatts of electricity at moderate water speeds. 

      Fossil fuel and coal are  getting scarse and of course their combusiton leads to realese of green house gases which are resulting in global warming tapping into renewable sources of energy like tidal energy can produce many terawatts of energy without producing any pollution no loss of limited natural resource. 

We can do away with coal and gas based power plants at least in areas of earth that are within a distance of 1000 kms from the ocean.

       Talking in context of India we have one of the longest coastlines in the world, the power of the sea currents across Arabian Sea, Indian ocean and Bay of Bengal can be tapped into and power can be generated for entire south, east and western parts of India.