Hi Michiel.

01-Nov-03 10:35:00, Michiel van der Vlist wrote to Jasen Betts


 JB>> immagine one of those in a mobile phone...  0.5W is probbly not
 JB>> enough power though. :)

 MvdV> Not if the battery is totally dispensed with. That's not
 MvdV> efficient however. A turbine is inefficient when it has to
 MvdV> operate over a wide range of loads. That's one reason they  are
 MvdV> fine for aircraft but not for cars

 exceopt Batman's :)    (but that's science fiction)
maybe a hybrid turbine-electric car could work.

 MvdV> Look at it this way: The battery in my cell phone (Siemens M35i)
 MvdV>  is 3.6 Volts, 500 mAh. Or 1.8 Wh. That's enough for 3 to 4 days
 MvdV>  of average operation. A 500mW generator could charge the
 MvdV> battery  in less than 4 hours. So 500 mW is plenty for a cell
 MvdV> phone

could even turn the turbine off while you're making the call...

 MvdV> Not for a laptop though and I suspect they are aiming for
 MvdV> that...

A catastrophic turbine failure could be real bad.

 -=> Bye <=-

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