Yes the same would also apply to fans or any other method
  PC

> -----Original Message-----
> From: piclist-bounces@mit.edu 
> [mailto:piclist-bounces@mit.edu] On Behalf Of Russell McMahon
> Sent: Friday, December 24, 2004 5:40 AM
> To: Microcontroller discussion list - Public.
> Subject: Re: [OT] Air circulation
> 
> 
> > Convectors have extra fins (just a thin corrugated sheet 
> spot welded to
> > the back of the panel rad. This creates a series of 
> chimneys that gives 
> > 50% more output per size
> 
> The "output" is entirely linked to the energy input unless there is a 
> thermostat which measures the temperature of the heater (not 
> the air). A 
> finned heater will run cooler for the same energy input and 
> give far better 
> convection, but two eg 1 kW heaters, one with fins and one 
> without, will 
> both deliver the same energy to a room one way or the other 
> if left to their 
> own devices. With heaters "what goes in must come out" applies.
> 
> 
> 
>         RM

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