[Hplusroadmap] todo: PV sat clouds (was Fwd: Re: [NSG] Meeting Announcement - 02/19)

[Bryan Bishop]

Have we calculated the optimal distance from the local star for pv sat 
clouds per rate of improvement in pv tech? I bet there's going to be an 
optimal market deployment window.

- Bryan

----------  Forwarded Message  ----------

Subject: Re: [NSG] Meeting Announcement  - 02/19
Date: Monday 18 February 2008
From: Eugen Leitl <eugen at leitl.org>
To: nsg at marshome.org

On Mon, Feb 18, 2008 at 12:52:52PM -0500, Dave Lindbergh wrote:
> At 12:30 PM 2/18/2008, Eugen Leitl wrote:
> >What about fusion? Fusion, as in solar? 1.3 kW/m^2 not good enough
> >for you?
> 
> What about when it's dark?

What do you mean, it's dark? The Sun has been shining for gigayears, and 
is good for a quite a few more of those.

Oh -- you mean transient occlusions by gravitationally compacted stellar 
excreta?

Oh yeah -- right -- some primitive life forms *are* still living on 
planetary surfaces. The poor things.

But as they're so primitive they suffer from diurnal cycles, so they use 
less energy during transient stellar occlusions, anyway. And of course 
their vegetation does not die at night as well, so they're likely to 
similiarly use chemical energy (I hear their planets are typically 
heavily hydrated, so electrolysis and fuel cells are straightforward) 
as a buffer. Before they figure out how to mine extraterrestrial 
material, or at least, reduce their launch sosts by a couple order of 
magnitudes, building PV sat clouds.

Now, somebody rather figure out how to use Si nanowire or SWNT planar 
arrays to make rectennas work in UV/VIS/NIR range. That would be 
interesting.

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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Bryan Bishop
http://heybryan.org/