Re: Lunar Solar Power Stations vs. The O'Neill Proposal
Fred J. McCall wrote:
"Jeff Findley" <jeff.findley@xxxxxxxxxxxxxx> wrote:
:I'd imagine that at a sufficiently large scale, SPS could help eliminate
:long distance electricity transmission lines. Makes you wonder how much
:money you could save by eliminating them, both in terms of cost to build and
:maintain the lines and in terms of the energy you lose by sending
:electricity over hundreds of miles of wires.
I'd think you'd lose more in the energy translations from sunlight to
electricity to microwave to electricity that you'd lose in line
losses.
Seem to me that SPS makes more sense if you build one BIG rectenna
farm and then distribute the power from there just as we do now.
Dividing things up like you're talking about means you're constantly
futzing with the beam (to do load leveling that is now done in the
long distance grid), take more losses to side lobes (more and smaller
beams), and various other bad effects.
Line loss is proportional to R * I^2 where R is the resistance of the
wire and I is current.
Seems to me wire resistance scales with wire length.
I believe line loss is large over large distances.
Hop
.
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