Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Tanada wrote:I have been searching for over a year now on and off, unsuccessfully, for details on a green energy system I read about many years ago. If anyone has links to information on this system or a book about it they could share the title of I would be very appreciative!
The system works like this, build a structure that looks like a tall grain elevator. Put a set of vents around the very top of the structure. One meter below the top of the structure mount a wind turbine generator horizontally, with a rotor diameter slightly smaller than the inner diameter of the structure. One meter below the wind turbine mount a ring of water mist projectors. At the bottom of the tower have another set of vents distributed around the base of the structure.
The system operates by pumping cold water through the mist projectors just under the turbine. The cold mist absorbs energy from the ambient air and falls because both it and the cooled air are denser than ambient. As the colum falls air is drawn into the top of the tower through the upper vents, passes the turbine causing it to spin. After spinning the turbine the air is cooled with the water mist and continues to fall drawing more air into the top vents. At the bottom of the structure the cool dense moist air escapes via the vents at the base of the structure, which are about 20% larger than the intake vents at the top.
So long as electricity is supplied to the water pump and ample water is availible to send through the mist projectors the tower will draw air through the turbine and produce power. These systems are only practical in areas with ample water to use but one suggestion was to co-locate them with waste water treatment facillities. Treated waste water is cleaned to environmentally 'fresh' standards and then dumped back into the environment, it is already clear and low contamination by design and has no further economic value to the treatment facility. By running a portion of the waste water through one of these 'water chimney' power systems a waste water plant is suppossed to be able to generate all the energy it consumes to process sewage, without any addition to environmental damage.
You could also place these 'water chimney' systems around the Great Lakes or any other fresh water lake or river so long as the water is filtered before you use it in the misting system.
The numbers IIRC were that one of these self consumes 20% of the power it generates to pump the water, the other 80% is availible for baseload grid application.
Zarquon wrote:Hey, it's only a 1200m tall tower. I've heard they'll make it out of recycled cardboard.
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
vtsnowedin wrote:The tallest building in the world is 829 meters high so I doubt you can build anything 1200 meters high and certainly not for cheap.
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