Ocean Wave Energy by Power India Technologies Pruthvi

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Comment by Dr.Pruthvi Raj Avadhuta on July 2, 2009 at 2:34am

Dear Mr.Merab Chirakadze,
I appreciate your effort to utilize Ocean Renewable Energy and thus be a part of the global community, working hard to protect the World from Global Warming.
However, I am an individual, a medical Doctor, not really rich enough (for, it costs millions of dollars to construct a Project at Sea). I have been seeking my Govt's assistance on the same terms and conditions as is being given to other non-conventional energy developers.
I read the description of your model and also seen the video coverage of the model being tested in a water tank. I thank you for your letter offering me 'future collaboration'. However, I feel developing an idea into a real working model is a long drawn out process. My personal experience has been that working in the confines of the four walls of a lab is almost altogether different, to that of working out at sea.
If the idea of your model is to convert the mechanical energy of the Ocean Waves to produce Electricity, then, please, light up a few electric bulbs of 100watts to show that your model can effectively produce power, as I have done with my model. Also, you should be able to combine the mechanical energy of the units of your model to run single large generators of 100MWs or more to produce continuous Grid quality Power. Producing Power with small single Generators of few Kilo Watts to a few Mega Watts will not effectively Power our large Cities. Your model also should protect the Generator and other auxillary equipment from high tides, cyclones,tsunami waves etc. About all this you have not written and I have not seen in your model. You may Please, work on all these aspects and give out something new to this World.
With Best Wishes
Yours Sincerely,
Dr. Pruthvi Raj Avadhuta.

Comment by Merab Chirakadze on July 1, 2009 at 1:57pm

Dear Sir or Madame
An independent initiative Experts' Group presents a brand new Wave Energy Converting Turbine MERABA. Please take your time to look at the description of the model and if you are interested, please contact us for future collaboration opportunities.
The main idea of our invention is a new and efficient way of utilizing energy of water waves. This is one of the important problems in modern technical science. Our version is different from all existing ideas and models known to us by simplicity of technical implementation: imagine a cable, one end of which is attached to a buoy on the sea, and the other end stretches to the shore. This cable runs in the same direction as the waves, floats on the water’s surface, and can rotate around its own axis. Under these circumstances, we can transfer the mechanical energy of the water waves to the shore. – A rotor with flexible fins attached perpendicularly to the axis – let’s call it a turbine for our purposes. Such a turbine would be turned either by the forward or backward motion of the sea waves. Many such turbines together can convert the energy of waves into other useful types of energy. This model is much simpler, stable and cheaper than any previous models known to us. Our idea can be thought of as on the new path for development of floating turbines. There are several advantages of the model:
1. Usually other such models utilize energy of a single wave during a particular phase of wave motion. In our model all waves along the length of the cable (length of which can be hundreds of meters) transfer part of their energy to the cable.
2. Any mechanical turbine needs to be rigidly attached to something, which creates additional technical complications. Our model is freely floating on a surface of water, so there are no difficulties related to stabilizing the turbine.
3. One of the significant problems of similar systems is the transport of the energy from the sea to the shore (by the electric cable on the bottom of the sea, for example). In our model, energy is naturally delivered to the shore for further utilization.

In April 8, 2009 at the laboratory of Oceanology of the Javakhishvili State University was held the presentation of the model. The presentation attended physicists of the University and other experts of the field. Here are some of their evaluations:
"The model of the turbine of simple and needs few materials. Thus it should be cheep and economically effective" -Emzar Khachidze, Expert of the Auditory Company "Centre of the Energy Inspection"
"The new principle of Transforming the wave energy into the mechanical energy, developed by Merab Chirakadze, is completely unknown in the field of renewable energy utilization of natural resources" - Prof. Doctor R. Pataraia, Chair of Hidroenergy Researches of the Institute of Energy of the Academy of Sciences of Georgia.
"invention of Merab Chirakadze is remarkable for its simplicity, This principle can be used in future as a foundation for new models" - Shalva Gagoshidze, Head of Laboratory of Marine Hydraulic Research of Georgia
Detailed information about the model MERABA you can see:
www.tech.org.ge/merabi
www.energyonline.ge

Comment by Dr.Pruthvi Raj Avadhuta on November 16, 2008 at 2:30am

If Greenland’s ice sheet melted completely, that alone would raise the oceans by 23 feet. And, those glaciers are dumping much more water into the oceans, than they did a decade ago, according to two satellite surveys.

Positive feedback seems to be at work. As a glacier melts a little, the water trickles down to the rock and lubricates the glaciers to slide towards the sea. Because of this and other effects, some of the Greenland’s glaciers are moving towards the sea at 7.5 miles a year.

Another Positive feedback loop is--- the Arctic permafrost may hold 14% of the world’s carbon, but as it melts, some of its Carbon-dioxide and Methane are released, adding to the amount of greenhouse gases. So, more permafrost melts.

In Climatic Science, Negative feedback loops could dampen change. For example--- warmer temperatures could mean, more snow over Antarctica, implying an initial build-up of the Antarctic ice sheet. The added ice could slow Global Warming and rising sea levels. But a new study published in Science Express says that, the Antarctic ice sheet is already thinning significantly--- raising more alarms and casting doubt on that negative feedback loops. Negative feedback loops in Climatology are much less common than Positive loops, which amplify change and leave our climate both unstable and vulnerable to human folly.---(As reported in the article--"SCARY FACTS ABOUT GLOBAL WARMING", written by New York Times Reporter Nicholas D. Kristof.)

6. Scientists say that, the amount of Carbon-dioxide that is right now present in the atmosphere, is sufficient to heat the World, for the next fifty years.

7. Methane is a green-house gas, that is many times (said to be 21 times), more capable than Carbon-dioxide in trapping the heat. Thousands of Giga tonnes of Methane, equivalent to the total amount of coal in the world, lie deep within the oceans, in the frozen form of ice like solids called Methane hydrates. The big question is, whether Global warming thaws some of those Methane hydrates. If so, the Methane might be released as a gargantuan oceanic burp. Once in the atmosphere, that Methane would accelerate the Green-house effect and warm the earth and raise sea levels even more.---(As reported in the article--"THE BIG METHANE BURP AND APOCALYPSE" written by New york times Reporter Nicholas D. Kristof.)

This world (in spite of all the above assaults, on the nature), is still in equilibrium to sustain ‘life’. We may be fast approaching (may be, only a decade or less, from now), wherein, this equilibrium may be lost and a ‘run-away’ situation may arise, when nothing could be done to save the Earth.

Now is the time to note the above facts and save the earth.

It is my sincere hope that my technology for Power Generation through Ocean Waves

and combined allied technologies will

replace Thermal Power Stations and Nuclear

Power Stations the World over.

Dr.Pruthvi Raj Avadhuta.
Cell: 091 9866 01 3238.
www.powerindiatechnologies.com

Comment by Dr.Pruthvi Raj Avadhuta on November 13, 2008 at 11:35am

POLLUTION

AND

GLOBAL WARMING

1. Coal based Thermal Power stations of 1260 MWs need about 28,000 tonnes of coal a day. At an efficiency of 35%, they give out 3000MWs to 5000MWs of heat directly into the atmosphere, apart from ash and other pollutants released into the atmosphere. A Thermal Power Station releases more Radio-active material (directly into the atmosphere) than a Nuclear Power Station.

(12,000MWs—i.e. three Ultra Mega Watt Projects of 4000MWs each, give out 100 million tonnes of Carbon-dioxide annually, apart from heat and other Pollutants. About 10 to 12 ultra Mega Watt projects are planned in the next few years. Govt. wants to grow large number of trees to negate the effects of carbon-dioxide and global warming. Fine, but there is no way to mitigate the effects of Sulfur-dioxide, Nitrous oxide, carbon monoxide and other greenhouse gases which could cause acid rains.)

2. India’s Mine able coal reserves will last for just 40 years (KPMG report). Mine able coal reserves of all the countries will last for 40 years to 80 years.

(One question we have to ask ---- if all the mine able coal reserves of India are utilized, --- will atmosphere sustain ‘life’ on Earth? Definitely, the answer is ‘NO’. We have to ask, how soon, this atmosphere, be destroyed for ‘life’, if all the countries utilize their mine able coal reserves.)

3. About eight million vehicles (big and small) are sold every year, in India alone. Throughout the world, many times this number is added to the already existing vehicles. Currently, eighty five(85) million barrels of oil is utilized everyday. The world’s population is about six and a half billion,(and add to this, seventy three million by the end of each year). The per capita consumption of oil is, five (5) barrels, globally. For the US, it is 25 barrels (America happens to be the largest polluter of the World. California State alone utilizes sixteen billion gallons of oil annually). For India, the per capita consumption of the oil is one (1) barrel only and there will be increase in demand for the oil consumption in the future. All this, pollutes the atmosphere continuously. Carbon-dioxide, carbon-monoxide, Sulfur-dioxide and other green-house gases and also heat, equivalent to several million Mega Watts (for the efficiency of the engines of the vehicles is less than 40%) is given out into the atmosphere and thus contribute continuously to the Pollution and Global warming.

4. This World is losing, one and a half acres of the rain forests, every second-- i.e. one lac twenty nine thousand, six hundred acres a day. Plants alone, can ‘fix’ the Carbon-dioxide of the atmosphere and replenish the atmosphere with the Oxygen through the process of Photosynthesis. It is estimated that world-wide net tree loss accounts for 25% of the global Carbon-dioxide (CO2) emissions. (The trees that are burnt, not only, no longer absorb carbon dioxide or replenish the atmosphere with the oxygen, but also, in the process of burning, they release more of the carbon-dioxide into the atmosphere). Adding to the dilemma is the fact, that almost half the world’s population depends on the firewood, for cooking and home heating.

5. Global warming has a direct bearing on Climatic Science. Climatic Science has two phenomena occurring:

Positive feedback loops and

Negative feedback loops.

A Positive feedback loop occurs, when a small change leads to an even larger change of the same type. For example, --- a modest amount of warming melts ice in northern climates. But, the bare ground absorbs three times as much heat as the ground covered by snow or ice. So, the change amplifies the original warming. Thus, even more ice melts, more heat is absorbed, and the spiral grows.

If Greenland’s ice sheet melted completely, that alone would raise the oceans by 23 feet. And, those glaciers are dumping much more water i