RE: Solar energy.... Japan launches study on space...

["Christoph Hofmeyr" <chofmeyr@nnr.co.za>]

Bjorn, Radsafers,

I suggested to Sandy that they might be missing a million, and he agreed

that there could have been a mistake.  I think the principle is to use a

well-focused MASER to transmit the energy from an earth-synchronous

satellite to a well-defined aerial on earth.  A pilot laser beam from

the earth station can have control in case the satellite is destabilised

by e.g. a micro-meteorite, in which case the Maser beam would have to be

deflected away - we do not want to be micro-waved by a gigawatt, even if

it is non-ionising radiation!

Own thoughts.

Chris Hofmeyr

chofmeyr@nnr.co.za





-----Original Message-----

From: Bjorn Cedervall [mailto:bcradsafers@HOTMAIL.COM]

Sent: Monday, July 09, 2001 12:49 PM

To: radsafe@list.vanderbilt.edu

Subject: Solar energy.... Japan launches study on space...





The text below dropped in via Sandy - can anyone confirm regarding the 

1-kilowatt capacity/satellite. It doesn't sound much (?) - 1 000 to 10

000 

MWe would have seemed more reasonable. I am also interested in this

topic 

since a success could mean that we will put the Earth into focus of a 

"magnifying glass" (numerous satellites). Animals and other organisms

may 

vanish in "both ends" (not enough with cold for high altitude or

(ant)arctic 

animals&plants, overheating of those which live in hot areas today). OK

- 

this solar radiation idea is perhaps too off-topic so please send the 

"non-radiation" comments to me directly - rather than to the group.



Bjorn Cedervall   bcradsafers@hotmail.com

-----------------------------------------

Japan launches study on space solar power as energy source



TOKYO, July 3 (Kyodo) - The Ministry of Economy, Trade and Industry

(METI) said Tuesday it has launched a two-year feasibility study on

developing solar power in space as an alternative source of energy.



The ministry aims to realize by 2040 a system of power generation

using satellites that can send electricity to Earth by microwaves.



Each satellite would have a 1-kilowatt capacity, equivalent to power

generation by a nuclear plant, a ministry official said.



The envisaged system will also be 10 times more efficient than solar

power systems on Earth because of its indifference to sunlight and

will emit no heat-trapping carbon dioxide, METI said.

<snip>

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