RSS 2.0 Feed

» Welcome Guest Log In :: Register

Pages: (640) < [1] 2 3 4 5 6 ... >   
  Topic: The Bathroom Wall, A PT tradition< Next Oldest | Next Newest >  
Nerull



Posts: 317
Joined: June 2007

(Permalink) Posted: Jan. 26 2009,12:05   

Quote (stevestory @ Jan. 26 2009,03:56)
Does the efficiency of a photovoltaic cell stay the same at higher intensities? Say I've got a 1m^2 PV cell at 20% efficiency. In direct sunlight we're talking 1.2 kW * 0.2==0.24kW. If I hook up an array of mirrors and increase the intensity on the cell by a factor of ten, does the 20% efficiency still hold? Will I get 2.4kW?

I'm not sure what the math is, but you will, up to the point where you fry the cells.

http://www.treehugger.com/files....er_.php

Most solar concentrator designs seem to be parabolic mirrors aimed at a solar cell. As you can imagine, it can get rather warm. As in the link above, IBM has been working on cooling technology with a reflector that produces enough heat to melt steel.

--------------
To rebut creationism you pretty much have to be a biologist, chemist, geologist, philosopher, lawyer and historian all rolled into one. While to advocate creationism, you just have to be an idiot. -- tommorris

   
  19182 replies since Jan. 17 2006,08:38 < Next Oldest | Next Newest >  

Pages: (640) < [1] 2 3 4 5 6 ... >   


Track this topic Email this topic Print this topic

[ Read the Board Rules ] | [Useful Links] | [Evolving Designs]