21 x 0.4 = 8.4w in standby
3 x 287 = 861w in operation
How do you know that it consumes 0.4W per hour in standby which is what your calculations assume?My TV (Pioneer 43") consumes 287w in full operation, and 0.4w in standby.
According to these guys certain box-sets consume the same amount of energy in standby as in 'on' mode.
I've had similar problems with CFLs. AFAIK they have only so many on/off's before they blow so are not ideal in every situation. I think I read some nonsense idea recently about banning or putting extra tax on the standard light bulb.I really want to "believe" in CFL bulbs but I've had 3 or 4 of these "blow" on me at home after very little service (less than a 100 hours?). Conventional wisdom seems to suggest they are most suited for applications where lighting is left on continuously or for long periods without switching.
so it isn't really going to waste, just because you are not there to see it: - it is still (slightly) warming the room.
Indeed.It seems to me that by far and away the two biggest things we can do to stop 'wasting' energy are:
1. building with better insulation and
2. the simple act of wearing a jumper indoors and turning down the thermostat.
As ever it probably makes sense to concentrate on the things that give the biggest bang for one's buck first. However usually it's not much hassle to also deal with some of the smaller things such as switching off devices rather than leaving them on standby so why not do it?Hidden electrical bandits
Things that use electricity even when they're off
Most people waste so much energy that they don't need to worry about this section -- they'll get LOTS more benefit by insulating, using the AC less, installing ceiling fans, using compact fluorescent lights, and turning out lights when they're not using them.
I mean if you leave a immersion on for over 3 hrs its obviously by accident. I'm sure theres other things aswell. Kettle with no water.
I'm driven mad with heating systems. Quite often the thermostats setting have no real effect other than off/on switches. On a hot day the heating will still come on. Seems to be a common problem.
Perhaps it's an over simplification or a case of "gilding the lily" but I think the campaigns do help to raise the collective awareness about energy use- why have something on standby mode unless it's necessary, why leave lights on unnecessarily? There are a great many people who don't care about energy use at all.It's a myth, a fallacy.
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