Energy use....applainces on standby.

Energy use....appliances on standby.

A bit of food for thought on electrical appliances left on standby from todays Independent....

http://news.independent.co.uk/uk/environment/story.jsp?story=649018

And a few readings from someone on another forum testing some of their appliances...

TV on: 45W
TV off: 0W
TV on standby: 9.2W (about 20% of the normal power consumption)

Cable box on: 18.5W
Cable box on standby: 18.5W

Video playing: 20.9W
Video stopped: 18.7W
Video on powersave: 18.5W
Video off: 11.7W

Scary stuff.

 

food for thought!

 

???????

 

Or...TAG AV32r standby 65W(higher I think for the Dp version)and Krells in standby...maybe the FPB's,but not KMAs... :JPS:

 

Yeah dunno about that...presume he means standby or some other 'off' function that isn't off at the plug.

 

As the resident hi-fi heretic, I always switch everything off after use, and never have anything on standby. I now feel incredibly environmentally virtuous

 

the only thing i leave on now is my dac and that usually goes into standby of a night. all my pc's go off but my tv/av/cable stays on standby or on otherwise all those little clocks go kaput.
cheers


julian

 

Yeah damn those clocks...thats why I don't turn off alot of the things that could be turned off.

 

I turn everything off except the Electrostats which take a good 24hrs to fully charge up.

 

I leave everything on, except my computer at night cos its in my room, but even that is on during the night half the time. It doesn't make any noise so I don't mind. I leave my Hi-Fi on, the active speakers, DEQ, transport and even the valve pre-amp. My tuner stays in standby most of the time as I don't use it a lot. I am not going to wait 2 hours for it too all warm up every day.

I will wire up a power strip at the weekend so I can probe a meter at it and see how much power all that stuff uses when the computer goes to sleepy and the hi-fi is playing nothing. I doubt it will be much more than 150watts. I?m all for turning stuff off if you can though, its just not practical for me with my project studio and I use it every single day.

I also can?t help feeling the government exaggerates how much power TVs and so on use in standby mode though. They must find the worst examples. That person?s was 9.2watts? come on that?s nothing. All it has to do is run a circuit waiting to receive a signal from the remote. If you leave your electric oven on for 2 hours by accident you will have un-done all that good work for a year or more.

How much electricity does a fridge use? I really think we should all be using gas fridges and freezers, gas ovens / hobs. That would save a lot. I know you still make pollution with gas but it has to be more efficient than burning gas (or whatever) at the power station to heat up water, turn turbines, generate electricity and then convert that back to heat in your oven.

I heard somewhere that if we all just had a small wind turbine in our back garden that would be nearly enough to be self sufficient. All on a grid of course so if you need more you have got it. We could get rid of nearly all the power stations then. The things don?t need to be huge either, they are supposedly very efficient.

 

Nice to see someone actually testing things rather than the energy politics garbage that journalists spout:

[such as...]

* Dishwashers left "on" at the end of their cycle consume 70 per cent of the power used when they are running.

* The average television is left on standby for up to 17.5 hours a day.Last year Britain's 62 million television sets consumed about 8 per cent of their energy consumption in standby mode.

* Washing machines use just under 20 per cent of their normal electricity requirement on standby.

* Tumble-dryers can use 38 per cent of power while waiting at the end of a cycle.

* If lights were turned off when not in use it would prevent 375,000 tons of CO2 emissions and save £55m in bills.


Clearly written by morons who also do not switch off their TV/Video [and therefore would have to re-tune it everytime they want to watch]

Funny, my washing machine heats a neon bulb on standby [say ~ 0.03watts]. If it running, it has a water heater and a high power motor [say ~1000watts]. I make that 0.003.3% of the power when not running..not 20%!!

I can't see why any equivalent kitchen appliances should be different?

Turning lights off...aren't the police recommending to leave lights on to deter crime?

Sure all standby energy is a shocking waste of resources in the UK - IN THE 3-6 WEEKS WHEN IT'S HOTTER THAN WE LIKE!
For the other 45-49 weeks, it's simply part of the background heating, and therefore wastes ZERO % energy in my house.

Of course, we never did figure out if it cost more energy to make a low power bulb than an incandescent either, did we?

 

Lets make a guess.

Life of the typical 100W bulb only 750 hours. CFL bulb is 10,000 hours. Say every 6-10 are required to be made for the job of one 23W CFL bulb. Each incandescent bulb in use consume 4x as much energy.

So do you think 1 CFL bulb need 24-40 times more energy to make as it takes 1 incandescent bulb?

 

Hi

This is something I've thought about a bit.

I've changed all my pc monitors to LCD, saves desk space as well. Though I leave the pc's on, in theory they use more power starting up and it stresses the conponents, (my excuse and I'm sticking to it)
TV is always turned off.
Everything else on standby, well you know how it is with hifi stuff, takes ages to warm up.

Rant mode on.
Now energy saver bulbs, I've got a bit of a beef with these, I brough 3 in the last year, all of which have failed, and at £7 they're not cheap, they put 15 year garranttee on them, you read it carefully, its carefully worded that this is only covered if the light is on for no more than 4 hours a day, complete CRAP!

not in my experience! plus again these things take ages to warm up and get bright.
Sorry but have to go back to normal bulbs, cost 25p each and last more than a year no matter how long I leave them on.
Rant mode off.

I would be interested to know if anyone has looked into alternative enery, solar water heating, solar eletric, wind turbine, etc? My feeling is its still too expensive for the average person, now surely this is where the government could be helping out. I know they're grants, but there are so many condtions and the grants still not make it viable. For example, a quote to convert my water heating to solar is £3k, a grant would pay 1/3 of that, so that's £2k, it would take over 10 years to break even on that.

Its something I want to do, but I'm not prepared to be out of pocket in the process.

How do you test of much wattage your applicences are using, is there some sort of device you can buy to show you?

 

Interesting. I have converted all my lightings to CFL bulbs. About 5% were crap and fail within months just like normal bulbs. Those Ikea 11 W CFL bulbs cost £2/each fitted in the kichen and bathroom last for 2-3 years some more. The expensive 23W in my living room is 3-4 years old. The Philips CFL bulb with heavy outer glass casing in the corridor is 6 years old and used average for >6h/day. I remember reading a website listed by Tones few weeks back saying in situations where CFL bulbs need to be turn off and on within 2 minutes repeatedly could shorten their live. Hope that is helpful.

Got the toy below from Maplins which tells you the wattage and more useful kWh.

http://www.maplin.co.uk/Module.aspx?ModuleNo=38343&TabID=1&source=17&WorldID=&doy=23m6

 

I can't say I have had much problem with the energy efficient bulbs. We have one that is left on all the time to guide the way to the bog and keep vampires away and that went wrong recently after about 4 years... I think it may have been due to being smacked and hanging by a wire! The others are all working fine and going strong after about 4 years. It?s probably best not to turn them on and off all the time, they pretty much go on in the evening and off when we go to bed.

 

Wolfgang, if you live in the UK then you will be using heating a lot of the time. When this happens, there is no waste heat power from anything. Unless you feel the need to open a window [like last week perhaps], no standby power is wasted. As leonard said with cars, replacing anything before its beyond repair is as big a waste of energy as other issues.

 

Its not really true that it isn't wasting the energy when the heat is used to warm your house. You would normally run your heating of gas right, and that is a lot more efficient for heating your house than electricity. So although the heat is not wasted, its a waste of energy to use electricity to do it.

My studio regularly gets too hot even when the rest of the house is pretty cool. Though I think it is as much to do with having lots of sound treatment on the walls which helps insulate the room as it is to do with the amount of electronics.

 

Well it's the government's choice to allow coal and gas turbine power stations for electricity. They could use renewables. Gas central heating is always burning gas. So the govt is wasting CO2 [with ref to the 'Standby Britain' article mentioned before], then some govt spokesperson bitches that the public are causing CO2 emissions using electricity..

 

Sound insulation doubling the work as heat insulation. Hmmmm....... that is a good point.

Just measured my fridge. Power used on idle 11W. If you open the door it goes up to 26W within seconds but goes back to normal idle level as soon as door closed again.

Wow.... interesting think I know what I will be doing for the rest of the morning.

 

You might find that the bulb takes 15 watts??