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Brilliant Light Power Going To Market - Free Energy Generator

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michaelsuede said:
Carbon has a sublimation point of 3915 K. As you saw in the letter, and in the previous video I posted, BrLP has already developed the control systems necessary to manage the reaction in a closed system.



As you saw in the link I provided, concentrator cells capable of handling 1000 suns intensity already exist, and they are cooled using completely passive systems that don't even require heat sinks.



So yeah, these problems are non-issues.
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At what temperature is the structural integrity of the graphite dome compromised?
 
michaelsuede said:
If I take a huge parabolic mirror or use a lens to concentrate incident solar radiation 1000 times on to the surface of a pv cell, the incident radiation per meter on the surface of that cell is no longer 1.4kW/m. So why are you arguing as if this is still the case? These cells are built to deal with megawatts of power per meter.
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I hope you never attempt to work in a lab in any building that I'm in. Of course if you concentrate the sun's 1.4kW/m2 with a 1000 sun array, then the peak power density on the silicon will be 1.4MW/m2, but the area illuminated will be 1000 times less than the total collection area of array, so that the mean power density will still be 1.4kW/m2. But in the idiotic application, the mean power density will have to be about 230kW/m2 (depending on its area) which means that the array will be absorbing 165 times more power per unit area than it is exposed to in its normal solar application. Passive cooling will not work. And what's worse the peak power density on the silicon will be 230MW/m2. Ouch!
 
michaelsuede said:
If I take a huge parabolic mirror or use a lens to concentrate incident solar radiation 1000 times on to the surface of a pv cell, the incident radiation per meter on the surface of that cell is no longer 1.4kW/m. So why are you arguing as if this is still the case? These cells are built to deal with megawatts of power per meter.
Click to expand...

The desperation with which you are hand-waving a MAJOR heat dissipation issue is adorable in its blind faith in Mills, but kind of pathetic when examined from any other point of view.

How much money DID you give Mills?
 
Oh - and here's something else. Let's say the graphite dome is 25cm in diameter, so about 0.195m2 in surface area. Let's say it's heated to 3500K to avoid it sublimating away. The the Stefan-Boltzmann radiation formula gives a total radiated power of 1.7MW, all of which heat will have to be dissipated somehow. Because you're running the dome at a reddish temperature, the radiance will peak in the infrared and only about 14% of the power will be in the visible. The mean total radiance on the PV cells will be 1.7MW/m2, assuming an array with 1 m2 area (over 1,000 times the solar case). For a passively cooled system, assuming the cell array is itself radiating as a blackbody, the equilibrium temperature of the array would be about 2350K. That's not going to be good. For a 1000 sun system, you then have a peak power density on the silicon of 1.7GW/m2. Ouch, ouch, ouch!

If the reaction doesn't produce 1.67MW of power then a dome of that size will not get to 3500K.

You can reduce the power output by making the dome smaller, but then you have to engineer all the gubbins inside the dome, molten silver and all into a smaller dome. Or you can run the dome at a lower temperature where the PV cells are even less sensitive and you throw away even more heat.

The steam engine is looking ever so attractive.
 
with 1m2 that's also roughly a sphere of radius of 28 cm if fully closed. If it is only a dome like the Graphite dome, then it is a dome/half sphere : 2*pi*r2=1 => 40 cm of height and 80 cm diameter/40 cm radius. Not bad for a block motor.... Hope you don't need much palce for anything else.
 
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michaelsuede said:
If I take a huge parabolic mirror or use a lens to concentrate incident solar radiation 1000 times on to the surface of a pv cell, the incident radiation per meter on the surface of that cell is no longer 1.4kW/m. So why are you arguing as if this is still the case? These cells are built to deal with megawatts of power per meter.
Click to expand...


Oh dear, it appears michaelsude (and very possibly Mills too) is under the impression that a concentrator solar array is something like a solar panel that you can blast with already concentrated solar radiation (like, by sticking it in the middle of one of those multi-acre arrays of solar tracking mirrors) to convert lots of power without damage. Oops!

My question for Mills is: What kinds of control and actuator mechanisms are used to keep the streams of molten silver precisely aligned with one another when the cell is operating in a vehicle that can accelerate, brake, and turn? Please describe the development path and anticipated schedule of this subsystem.
 
Aepervius said:
with 1m2 that's also roughly a sphere of radius of 28 cm if fully closed. If it is only a dome like the Graphite dome, then it is a dome/half sphere : 2*pi*r2=1 => 40 cm of height and 80 cm diameter/40 cm radius. Not bad for a block motor.... Hope you don't need much palce for anything else.
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I'm assuming both the graphite dome and the spherical PV array are full spheres.
 
michaelsuede said:
If I take a huge parabolic mirror or use a lens to concentrate incident solar radiation 1000 times on to the surface of a pv cell, the incident radiation per meter on the surface of that cell is no longer 1.4kW/m. So why are you arguing as if this is still the case? These cells are built to deal with megawatts of power per meter.
Click to expand...

But then the cells are spaced out at the centers of those large mirrors or lenses, with wide gaps between them for cooling. Mills wants to pack them together with no gaps between them. Where's the cooling?
 
phunk said:
But then the cells are spaced out at the centers of those large mirrors or lenses, with wide gaps between them for cooling. Mills wants to pack them together with no gaps between them. Where's the cooling?
Click to expand...

The magical radiator that somehow manages to disperse the massive amount of heat without interfering with collecting light from the glowing dome.
 
This thread is loading slowly so I have split to a new thread here. As is usual, the split point is arbitrary and posters are free to quote/copy & paste from this iteration into the new thread.
Posted By: Agatha
 
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