Comment Re:Too much! (Score 1) 169
60W GLS incandescent bulb left on for a year costs ~£60 in UK prices or £20 if used 8h/d, which is > $22.
That's why we should stop using them.
Rgds
Damon
60W GLS incandescent bulb left on for a year costs ~£60 in UK prices or £20 if used 8h/d, which is > $22.
That's why we should stop using them.
Rgds
Damon
Yes it is, because you are wasting lots of extra exergy, ie you could be getting the heat you need with far less electricity, leaving the rest for someone else or allowing less upstream resource (nuclear fuel, water, transmission infrastructure) to be consumed for the same outcome.
Rgds
Damon
Exactly my point. The law and justice are not to be confused, but I have reasonable hopes for the latter being served here.
Rgds
Damon
Indeed. We should be targetting microwatts or at most tens of milliwatts not tens of watts. We're talking lazy engineering and insufficiently discerning end-users here.
(I'd like to chat about your stuff off-line, BTW. as part of our public IoT Launchpad project, see sig!)
Rgds
Damon
I think that there is a chance of justice being served in spite of the law here, since it seems fairly clear from the little that I have read that some deceit was going on.
Rgds
Damon
Sorry, the input parser appears to have eaten the post.
My MBA uses much less than 2W with maxed-out RAM in sleep mode.
So 10W is tragic.
Rgds
Damon
I totally agree that life is not that simple, but it seems to be a useful starting point.
Until the real nutcases wrap round the back... %-P
Rgds
Damon
Is there a significant antigen left in this foam?
I know people can be allergic to almost anything, but this looks to me like only relatively simple innocuous compounds remain in the foam.
The point being on the battlefield, what proportion of people would be killed by this from anaphylaxis (say) rather than saved by it?
Rgds
Damon
IIRC units are shipped in the EU with the 'instant-on' mode disabled by default, which would meet regs.
So it's superficially a software issue pandering to a chunk of their consumers being by default happy to waste lots of energy all the time (or never realising what's going on) rather than press a button. And we wonder why some places have an obesity and a power-consumption problem!
Rgds
Damon
1) I thought that the EU limit was now 0.1W.
2) I think that if the manufacturers don't call the mode 'standby' then they may be able to draw what power they like: cue unholy mix of engineers and marketing bods gaming the regs with euphemisms...
Rgds
Damon
And electric resistance heating is usually *terrible* compared to any number of available alternatives.
It represents a *huge* waste of exergy, when a heat pump (as you allude to) can produce several units of heat for one unit of electricity.
So, in summer it's all bad and in winter it;'s at least 75% bad. And that's ignoring (eg) CO2 and other emissions from the generation mix.
Can we stop with this "waste is good" meme?
Rgds
Damon
My MacBook Air draws http://www.earth.org.uk/saving...
Rgds
Damon
It's still not a good reason to waste something that is trivially easy to avoid wasting.
So, 0.26W would be somewhat over 0.1% of my house's mean grid consumption (1700kWh gross ignoring my solar PV). I have a family of four.
I still make an effort to charge devices off grid because it helps me think about my energy use for the bigger items too.
tl;dr: an efficient charger not doing anything isn't a killer, but 900kWh/month is a travesty.
Rgds
Damon
My old microwave oven uses enough power for its clock that if left on 24x7 would use more for the clock than for all the cooking I do.
Newer devices (especially those for sale in the EU) should be better behaved.
Rgds
Damon
Note: skylights are poor thermally and let a lot of heat out. Also I had one in a previous house in the bathroom where the seal was so bad (thus clearly leaking air too) that I had the surreal experience of being hailed on in the bath.
Also, have skylights ways from south (if you're in the northern hemisphere) to avoid excessive glare and overheating.
BTW, I have triple glazing now! Overall heat consumption from natural gas was 3000kWh last year and electricity 1700kWh.
http://www.earth.org.uk/saving...
Rgds
Damon
From Sharp minds come... pointed heads. -- Bryan Sparrowhawk