Talk:Elevator:2010

A question of power&mdash; Critiques?
There is a efficiency problem with beamed power. This isn't a problem with small elevator throughput. But for serious throughput, in the range of what would be needed for a power satellite construction project, it is.

Power satellites need in the range of a million tonnes per year, in rough numbers 100t/hr. A kg takes close to 15 kWh to lift it to GEO.

A mechanical (moving cable) elevator lifting a kg/hr would take 15kW to drive it. An elevator lifting 1 t/hr would take 15 MW. 100 t/hr would need 1.5 GW.

At ten percent efficient, the laser input power would be 15 GW.

8 GW input seems to be enough to support a 100 t/hr laser ablation propulsion transport system.

Comments?

Keith Henson (talk) 16:40, 12 February 2009 (UTC)


 * How does this contribute to the article? Darrenaustralia (talk) 06:19, 12 July 2011 (UTC)

External link to Elevator2010.org
This link only contains advertising. There is no useful information related to the article at all. Can it be removed? Darrenaustralia (talk) 06:20, 12 July 2011 (UTC)

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