2026 TeoTwawKi ... 2032 Darkest Interregnum Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum

GLD 383.12

+0.8%

Nov 26 4:00 PM EST

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: Haim R. Branisteanu who wrote (39297)	8/27/2008 11:31:53 AM
From: Joe S Pack	Read Replies (1) of 218044

Haim, A large correction to your energy equation assumption. The figure you quoted is at the outer atmosphere and the actual average radiation on earth surface taking into account the angle at which the rays strike and that at any one moment half the planet does not receive any solar radiation, is one-fourth the solar constant (approximately 342 W/m²). en.wikipedia.org what type of solar you envision? the sun is radiating around 1.3+KW per square meter. Around the equator you can get easy an average of close to 1 KW per square meter. The current commercial systems such as that of First Solar's can reach 10% conversion efficiency. But the race is on to reach 1KW per dollar cost grid parity by 2010 - 2012, so as to be able to compete with conventional approaches. Today most commercial systems do not even convert at 10% efficiency - so you need a surrogate source of energy and the best is wind and sea who also store solar energy. Put a rizhome or seed into the ground and you have close to 5% efficiency Silicon is not the ideal material for PV cells and solar concentrators are expensive Any new ideas up your sleeve? -J6P

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next