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#27788 09/18/08 10:12 AM
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Aleksey
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Aleksey
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Please, write what is wrong with this reasoning:

Atmospheric powerplant

The main idea of global warming is that greenhouse gases prevent the energy from leaving the surface of planet. In the same time the upper layers of the troposphere are much colder and successfully emit the infrared radiation to the outer space. So to stop the global warming it is necessary to organize the moving of the heat from the lower layers of the atmosphere to the upper layers.
Also we know that the heat engine performs the conversion of heat energy to mechanical work by exploiting the temperature gradient between a hot "source" and a cold "sink". So the moving of the heat from the lower layers of the atmosphere to the upper layers can be done with some output of the mechanical work. The amounts of this mechanical work can be huge as we know on example of a tropical cyclone. The working body of the cyclone is simply the moist air, which releases the heat by water vapour condensation when rises. So to make the atmospheric heat engine it is necessary to make the construction in which the moist air is circulating in organized manner between the lower and upper layers of the troposphere. Therefore the height of this construction has to be about the height of the troposphere. Also this construction has to be able to withstand the strength of the winds. These requirements can make the creation of such constructions too expensive and non profitable.

To solve the construction problems of the atmospheric heat engine the present synopsis suggest to use the principles of the hot air balloon. If the moist air, which is the working body, will have the average temperature, which is higher then the average surround air temperature, then the atmospheric heat engine will be buoyant. In this case the powerplant will travel with air and it will not be necessary to withstand the winds. Also in this case the construction will be as light and cheap as possible for such a device.
To get the additional energy to keep the average temperature difference the atmospheric powerplant can convert some part of produced mechanical work back into the heat energy. Also to minimize the necessary temperature difference the device can be constructed as Rozière balloon which has separate chambers for a non-heated lifting gas (such as hydrogen or helium). While traveling over the water surface the atmospheric powerplant can replenish its hydrogen reserve by converting the water into the hydrogen and the oxygen. In this case some part of hydrogen can later be used as fuel to increase the temperature of the working body.
To transfer the produced energy to the ground the atmospheric powerplant can convert mechanical work to the electricity and then use the cellular network of sockets. The connection and disconnection has to be made on the fly without stopping the powerplant using some device like helicopter. In the seas and oceans such sockets can be placed on special floating platforms with electrical accumulators or devices, which convert the water into the hydrogen and the oxygen.

The illustrated synopsis:
http://docs.google.com/Doc?id=dcvrsh6t_17c859bsfm


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An airborne wind turbine is a design concept for a wind turbine that is supported in the air without a tower. A tether would be used to transmit energy to the ground. These systems would have the advantage of tapping an almost constant wind and doing so without a set of slip rings or yaw mechanism, without the expense of tower construction. The main disadvantage is that kites and 'helicopters' come down when there is insufficient wind. Also, bad weather conditions, such as lightning and/or thunderstorms, could temporarily suspend use of the machines, probably requiring them to be brought back down to the ground and covered. These schemes require a long power cable and, if the turbine is high enough, an aircraft exclusion zone. As of 2008, no commercial airborne wind turbines are in regular operation.
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Last edited by Kate; 10/11/08 09:56 AM.

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