Re: Electricity Transmission



"Paul F. Dietz" wrote:

Eeyore wrote:

Never been tried has it ? And what do you reckon the efficiency is ?

Microwave power transmission has been demonstrated on a pilot
scale, with mediocre efficiency (IIRC, the efficiency was 54%).

Over what distance ?


However, this efficiency could probably be improved by incremental
improvements in the microwave generator, antennas, and rectifiers.

All these things are inherently lossy.


The big problem with microwave power transmission over great
distances is the need for a space-based reflector, and the
large scale of the system, necessarily with aperatures at least
on the order of sqrt(distance * wavelength).

The idea is generally barking mad.

I wonder how much microwave energy would be absorbed by atmospheric water vapour
?

Graham

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