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No answer (sorry), but two questions :
- What device do you use to mesure power ? Is it expensive ?
- Have you tried to mesure the power used by electronic devices (TV,
HiFi, etc.) when they are on standby ? I find it difficult to get a
estimation for this, and it seems to vary greatly even among similar
devices ?
Thibaut
> Well, I've been testing out all sorts of electric and electronic gear to
> find out what actually uses the most power. The results are very
> surprising...
>
> The most thirsty device I've found so far is... the kettle. It uses in
> excess of 3,000 W for the entire duration that you try to boil water
> with it. On the other hand, something like the washing machine uses a
> tiny fraction of that, even when it's on its highest spin cycle. (Uses
> only 600 W. Actually uses 700 W while it spins up, but then drops to 600.)
>
> I haven't tested out the TV yet, but of all the stuff I have tested, it
> seems that any device that performs any kind of *heating* instantly uses
> many times more power than anything else. I emphasize: MANY TIMES more
> power. Not 20% more, not 50% more, but nearer to 1000% more! Heck, even
> the vacuum cleaner (surely a high power device) in fact uses a fraction
> of the power that the toaster does!
>
> Can anybody suggest why this might be? I mean, huge powerful electric
> motors use a fair bit of power, but it's almost insignificant compared
> to heating devices. Why does heating things require so much power?
>
> Also, I notice that my PC uses about 10x as much power as my laptop.
> There are two possible explanations for this:
>
> 1. My PC is (or recently was) leading edge, whereas my laptop was pretty
> much old hat even when it was purchased.
>
> 2. It's a laptop. It's designed to use less power.
>
> PS. We have *another* Intel Core 2 Duo laptop at work. And just like the
> first one, it seems to be utterly impossible to make it heat up, no
> matter how much number chrunching I throw at it. How do they manage that?
>
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