Southern Electric say each mobile phone charger uses 100kWhours a DAY!
Southern Electric say each mobile phone charger uses 100kWhours a DAY!. Discuss Southern Electric say each mobile phone charger uses 100kWhours a DAY!, on Wireless Forums.
Southern Electric say each mobile phone charger uses 100kWhours a DAY!
Have a look - how can they get it so wrong by a magnitude of.....???
My chargers both say they use about 21mA max.
Also, point 3 seems a little dubious too - AFAIK, the only things that use
any significant power on standby are digiboxes.
Surely the rest just take enough to keep the coil energised? My TV and video
both use < 4 watts on standby.
Re: Southern Electric say each mobile phone charger uses 100kWhoursa DAY!
Jonathan wrote:
> Have a look - how can they get it so wrong by a magnitude of.....???
>
> My chargers both say they use about 21mA max.
>
> Also, point 3 seems a little dubious too - AFAIK, the only things that use
> any significant power on standby are digiboxes.
> Surely the rest just take enough to keep the coil energised? My TV and video
> both use < 4 watts on standby.
>
> http://i27.photobucket.com/albums/c1...ic_charger.jpg
The whole lot is dubious at best. Down right misleading would be closer
to the point.
Always a problem when you have non technocal maketing droids write
greenwash. Even if you ignore the 4kW phone charger, the advice to
landfill a working freezer on the *assumption* is is drastically less
efficent than your current one risky at best, and that is before you
look at the life cycle energy of disposing of the old one and producing
and supplying a new one.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
Jonathan wrote:
> Have a look - how can they get it so wrong by a magnitude of.....???
>
> My chargers both say they use about 21mA max.
>
> Also, point 3 seems a little dubious too - AFAIK, the only things that use
> any significant power on standby are digiboxes.
> Surely the rest just take enough to keep the coil energised? My TV and
> video
> both use < 4 watts on standby.
>
> http://i27.photobucket.com/albums/c1...ic_charger.jpg
Its part of the 'good lie' which has become more common as of late. It
doesnt matter if the information they tell you is misleading, or just plain
incorrect, if it is in a good cause (as judged by them) then it is ok.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"Gaz" <gazter@msn.com> wrote in message
news:523rpsF1ms4pmU1@mid.individual.net...
> Jonathan wrote:
>> Have a look - how can they get it so wrong by a magnitude of.....???
>>
>> My chargers both say they use about 21mA max.
>>
>> Also, point 3 seems a little dubious too - AFAIK, the only things that
>> use
>> any significant power on standby are digiboxes.
>> Surely the rest just take enough to keep the coil energised? My TV and
>> video
>> both use < 4 watts on standby.
>>
>> http://i27.photobucket.com/albums/c1...ic_charger.jpg
>
> Its part of the 'good lie' which has become more common as of late. It
> doesnt matter if the information they tell you is misleading, or just
> plain incorrect, if it is in a good cause (as judged by them) then it is
> ok.
>
> Gaz
>
Many gullible people remember this crap. My TV only uses 0.8 of a watt on
standby (not that I leave it on standby often). I am getting fed up of the
greenies making everyone feel guilty about everything - there are bigger
issues - like the pollution made in China by their dirty power stations and
processes (producing goods for us that are then shipped half way around the
world); destruction of rainforests, etc.
People are only too happy to point their finger and tut everytime a
politician of member of royal family use a car or aeroplane - but miss
issues that are statistically more significant.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
Maybe the publicity dept got the decimal point in the wrong place
Should it not have been 100 x 10 to the power of -3 or 100mW, but then
the publicity dept thought we are a generating company and do not deal
in such small numbers, and dropped the minus sign and made it into
100kW.
Or maybe the typist thought the engineers notes had just got a pencil
mark on it, and did not transfer the minus sign ???
It does make you wonder how many eyes (on multi thousand pay packets)
read that bit of paper before being published.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
Dear ukagent:
"ukagent" <ukagent@msn.com> wrote in message
news:08mpr2lkpuabbq6o2f07oh9k0cqhmml661@4ax.com...
> Maybe the publicity dept got the decimal point in
> the wrong place
> Or maybe the typist thought the engineers notes
> had just got a pencil mark on it, and did not transfer
> the minus sign ???
It may have been extrapolated to their entire customer base,
assuming each account had a similar device.
Re: Southern Electric say each mobile phone charger uses 100kWhoursa DAY!
ukagent wrote:
> Maybe the publicity dept got the decimal point in the wrong place
>
> Should it not have been 100 x 10 to the power of -3 or 100mW, but then
> the publicity dept thought we are a generating company and do not deal
> in such small numbers, and dropped the minus sign and made it into
> 100kW.
>
> Or maybe the typist thought the engineers notes had just got a pencil
> mark on it, and did not transfer the minus sign ???
>
> It does make you wonder how many eyes (on multi thousand pay packets)
> read that bit of paper before being published.
>
I have one of those energy monitors from Maplin, my mobile phone
chargers use nothing when not plugged into the phone.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"Dave R" <daveroberts@nospamblueyonder.co.uk> wrote in message
news:Ey5vh.2511$9S5.1100@text.news.blueyonder.co.u k...
> ukagent wrote:
>> Maybe the publicity dept got the decimal point in the wrong place Should
>> it not have been 100 x 10 to the power of -3 or 100mW, but then
>> the publicity dept thought we are a generating company and do not deal
>> in such small numbers, and dropped the minus sign and made it into
>> 100kW.
>>
>> Or maybe the typist thought the engineers notes had just got a pencil
>> mark on it, and did not transfer the minus sign ???
>>
>> It does make you wonder how many eyes (on multi thousand pay packets)
>> read that bit of paper before being published.
>>
> I have one of those energy monitors from Maplin, my mobile phone chargers
> use nothing when not plugged into the phone.
Is that the £26.99 one on the Maplin website?. How accurate is it at low
current?
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"John" <john.plant510@ntlworld.com> wrote in message
news:Iw3vh.179$KC.135@newsfe4-gui.ntli.net...
>>
>> Gaz
>>
> Many gullible people remember this crap. My TV only uses 0.8 of a watt on
> standby (not that I leave it on standby often).
What make and model is that? Is the 0.8W figure your own measured value, or
a manufacturer figure?
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"OG" <owen@gwynnefamily.org.uk> wrote in message
news:5247tuF1lvb4qU1@mid.individual.net...
>
> "John" <john.plant510@ntlworld.com> wrote in message
> news:Iw3vh.179$KC.135@newsfe4-gui.ntli.net...
>>>
>>> Gaz
>>>
>> Many gullible people remember this crap. My TV only uses 0.8 of a watt on
>> standby (not that I leave it on standby often).
>
> What make and model is that? Is the 0.8W figure your own measured value,
> or a manufacturer figure?
>
I don't know about his TV but Sony say that my LCD 23" uses 0.7W on
standby - that seems very low and makes you inclined to question all of the
figures being bandied around by the Government!
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"OG" <owen@gwynnefamily.org.uk> wrote in message
news:5247tuF1lvb4qU1@mid.individual.net...
>
> "John" <john.plant510@ntlworld.com> wrote in message
> news:Iw3vh.179$KC.135@newsfe4-gui.ntli.net...
>>>
>>> Gaz
>>>
>> Many gullible people remember this crap. My TV only uses 0.8 of a watt on
>> standby (not that I leave it on standby often).
>
> What make and model is that? Is the 0.8W figure your own measured value,
> or a manufacturer figure?
>
>
JVC AV-28WFT1EK - Approx 4 years old - 28 inch CRT Flat Screen.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"John Rumm" <see.my.signature@nowhere.null> wrote in message
news:45bd6691$0$8753$ed2619ec@ptn-nntp-reader02.plus.net...
> Dave R wrote:
>
>> I have one of those energy monitors from Maplin, my mobile phone chargers
>> use nothing when not plugged into the phone.
>
> It is worth noting that many modern phone chargers are switched mode power
> supplies. Many of these will in effect turn off when there is no load.
>
One test is whether it warms up at all when its not charging.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"Jonathan" <digitaltoast@gmail.com> wrote in message
news:45bc95b8$1@newsgate.x-privat.org...
> Have a look - how can they get it so wrong by a magnitude of.....???
>
> My chargers both say they use about 21mA max.
>
> Also, point 3 seems a little dubious too - AFAIK, the only things that use
> any significant power on standby are digiboxes.
> Surely the rest just take enough to keep the coil energised? My TV and
> video both use < 4 watts on standby.
>
> http://i27.photobucket.com/albums/c1...ic_charger.jpg
>
They got a k in by mistake. Typical chargers will use about 100Whrs per
day.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
In message <1170009779.538674@leri.aber.ac.uk>, Roger Matthews
<rfm@aber.ac.uk> writes
>Sony say that my LCD 23" uses 0.7W on standby - that seems very low
>and makes you inclined to question all of the figures being bandied
>around by the Government!
>
I'm so green I don't use a flushing loo but consider my TVs left on
standby to provide background heating.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"dave @ stejonda" <no$spam!delete&abuse%dave@stejonda.freeuk.com> wrote in
message news:0EUkahF0fB0FFAIj@privacy.net...
> In message <1170009779.538674@leri.aber.ac.uk>, Roger Matthews
> <rfm@aber.ac.uk> writes
>
>>Sony say that my LCD 23" uses 0.7W on standby - that seems very low and
>>makes you inclined to question all of the figures being bandied around by
>>the Government!
>>
> I'm so green I don't use a flushing loo but consider my TVs left on
> standby to provide background heating.
>
> --
> dave @ stejonda
Many manufacturers have been aspiring to the "1 Watt Initiative" for some
years.
Re: Southern Electric say each mobile phone charger uses 100kWhoursa DAY!
John wrote:
> "dave @ stejonda" <no$spam!delete&abuse%dave@stejonda.freeuk.com> wrote in
> message news:0EUkahF0fB0FFAIj@privacy.net...
>> In message <1170009779.538674@leri.aber.ac.uk>, Roger Matthews
>> <rfm@aber.ac.uk> writes
>>
>>> Sony say that my LCD 23" uses 0.7W on standby - that seems very low and
>>> makes you inclined to question all of the figures being bandied around by
>>> the Government!
>>>
>> I'm so green I don't use a flushing loo but consider my TVs left on
>> standby to provide background heating.
>>
>> --
>> dave @ stejonda
>
> Many manufacturers have been aspiring to the "1 Watt Initiative" for some
> years.
>
> Even my old 28" CRT only uses 0.8w on standby.
>
> The Green Campaigners are out of touch
>
>
0.8w*24hr/day*300,000,000 TV's = 5,760,000,000kw-hr/day in tv's only.
Now add in cell phone chargers, computers, and stereos. All that energy
wasted so we save 1sec when we want to get our daily dose of
mind-numbing drivel.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
On Wed, 14 Feb 2007 16:44:25 UTC, lyttlec <lyttlec@e.goais.net> wrote:
> John wrote:
> > "dave @ stejonda" <no$spam!delete&abuse%dave@stejonda.freeuk.com> wrote in
> > message news:0EUkahF0fB0FFAIj@privacy.net...
> >> In message <1170009779.538674@leri.aber.ac.uk>, Roger Matthews
> >> <rfm@aber.ac.uk> writes
> >>
> >>> Sony say that my LCD 23" uses 0.7W on standby - that seems very low and
> >>> makes you inclined to question all of the figures being bandied around by
> >>> the Government!
> >>>
> >> I'm so green I don't use a flushing loo but consider my TVs left on
> >> standby to provide background heating.
> >>
> >> --
> >> dave @ stejonda
> >
> > Many manufacturers have been aspiring to the "1 Watt Initiative" for some
> > years.
> >
> > Even my old 28" CRT only uses 0.8w on standby.
> >
> > The Green Campaigners are out of touch
> >
> >
> 0.8w*24hr/day*300,000,000 TV's = 5,760,000,000kw-hr/day in tv's only.
> Now add in cell phone chargers, computers, and stereos. All that energy
> wasted so we save 1sec when we want to get our daily dose of
> mind-numbing drivel.
You're another one who likes to distort the truth, then? You might make
it a bit more convincing by at least trying to do the calculation
correctly.
0.8w*24hr/day = 19.2 watt/hours per day for one TV. Multiply that by
300,000,000 (where did you get the 5 TVs for every man, woman and child
in the country from?, but we'll leave that one) and you get 5,760,000
kwH per day.
So, you're three orders of magnitude out (a factor of 1000, in other
words). That's using a false assumption of 5 TVs each for everyone in
the UK; perhaps you meant some bigger area, but who knows? you
conveniently left that out.
Add in the fact that for a lot of that 24 hours the TV would be on
anyway. Then also the fact that many people turn the TV off when asleep
or not at home.
Greenwash. And highly unconvincing greenwash.
--
The information contained in this post is copyright the
poster, and specifically may not be published in, or used by http://www.diybanter.com
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
"Bob Eager" <rde42@spamcop.net> wrote in message
news:176uZD2KcidF-pn2-XGCdzrWmg44F@rikki.tavi.co.uk...
> On Wed, 14 Feb 2007 16:44:25 UTC, lyttlec <lyttlec@e.goais.net> wrote:
>
>> John wrote:
>> > "dave @ stejonda" <no$spam!delete&abuse%dave@stejonda.freeuk.com> wrote
>> > in
>> > message news:0EUkahF0fB0FFAIj@privacy.net...
>> >> In message <1170009779.538674@leri.aber.ac.uk>, Roger Matthews
>> >> <rfm@aber.ac.uk> writes
>> >>
>> >>> Sony say that my LCD 23" uses 0.7W on standby - that seems very low
>> >>> and
>> >>> makes you inclined to question all of the figures being bandied
>> >>> around by
>> >>> the Government!
>> >>>
>> >> I'm so green I don't use a flushing loo but consider my TVs left on
>> >> standby to provide background heating.
>> >>
>> >> --
>> >> dave @ stejonda
>> >
>> > Many manufacturers have been aspiring to the "1 Watt Initiative" for
>> > some
>> > years.
>> >
>> > Even my old 28" CRT only uses 0.8w on standby.
>> >
>> > The Green Campaigners are out of touch
>> >
>> >
>> 0.8w*24hr/day*300,000,000 TV's = 5,760,000,000kw-hr/day in tv's only.
>> Now add in cell phone chargers, computers, and stereos. All that energy
>> wasted so we save 1sec when we want to get our daily dose of
>> mind-numbing drivel.
>
> You're another one who likes to distort the truth, then? You might make
> it a bit more convincing by at least trying to do the calculation
> correctly.
>
> 0.8w*24hr/day = 19.2 watt/hours per day for one TV. Multiply that by
> 300,000,000 (where did you get the 5 TVs for every man, woman and child
> in the country from?, but we'll leave that one) and you get 5,760,000
> kwH per day.
>
> So, you're three orders of magnitude out (a factor of 1000, in other
> words). That's using a false assumption of 5 TVs each for everyone in
> the UK; perhaps you meant some bigger area, but who knows? you
> conveniently left that out.
>
> Add in the fact that for a lot of that 24 hours the TV would be on
> anyway. Then also the fact that many people turn the TV off when asleep
> or not at home.
>
> Greenwash. And highly unconvincing greenwash.
>
> --
> The information contained in this post is copyright the
> poster, and specifically may not be published in, or used by
> http://www.diybanter.com
Well done Bob.
Where I live the council are proposing Wind Turbines and local businesses
are "lined up" to take the Green Electricity". What is conveniently
forgotten is the fact that power Stations need to be kept spinning for when
the wind drops - unless the businesses are content with power only on good
days.
Incidentally, most people I know only uses standby for quite short periods
during the evening. The sets get powered down at bed time and left off until
the late afternoon viewing period.
Re: Southern Electric say each mobile phone charger uses 100kWhoursa DAY!
Bob Eager wrote:
> On Wed, 14 Feb 2007 16:44:25 UTC, lyttlec <lyttlec@e.goais.net> wrote:
>
>> John wrote:
>>> "dave @ stejonda" <no$spam!delete&abuse%dave@stejonda.freeuk.com> wrote in
>>> message news:0EUkahF0fB0FFAIj@privacy.net...
>>>> In message <1170009779.538674@leri.aber.ac.uk>, Roger Matthews
>>>> <rfm@aber.ac.uk> writes
>>>>
>>>>> Sony say that my LCD 23" uses 0.7W on standby - that seems very low and
>>>>> makes you inclined to question all of the figures being bandied around by
>>>>> the Government!
>>>>>
>>>> I'm so green I don't use a flushing loo but consider my TVs left on
>>>> standby to provide background heating.
>>>>
>>>> --
>>>> dave @ stejonda
>>> Many manufacturers have been aspiring to the "1 Watt Initiative" for some
>>> years.
>>>
>>> Even my old 28" CRT only uses 0.8w on standby.
>>>
>>> The Green Campaigners are out of touch
>>>
>>>
>> 0.8w*24hr/day*300,000,000 TV's = 5,760,000,000kw-hr/day in tv's only.
>> Now add in cell phone chargers, computers, and stereos. All that energy
>> wasted so we save 1sec when we want to get our daily dose of
>> mind-numbing drivel.
>
> You're another one who likes to distort the truth, then? You might make
> it a bit more convincing by at least trying to do the calculation
> correctly.
>
> 0.8w*24hr/day = 19.2 watt/hours per day for one TV. Multiply that by
> 300,000,000 (where did you get the 5 TVs for every man, woman and child
> in the country from?, but we'll leave that one) and you get 5,760,000
> kwH per day.
>
> So, you're three orders of magnitude out (a factor of 1000, in other
> words). That's using a false assumption of 5 TVs each for everyone in
> the UK; perhaps you meant some bigger area, but who knows? you
> conveniently left that out.
>
> Add in the fact that for a lot of that 24 hours the TV would be on
> anyway. Then also the fact that many people turn the TV off when asleep
> or not at home.
>
> Greenwash. And highly unconvincing greenwash.
>
Ok, I did type kw-hr when I did mean w-hr. my bad.
OTOH, I should have used 600,000,000 for the number of TVs. The current
estimate for the US population is just over 300,000,000 and we have
closer to tvs per person. I know several families of three that have one
in each bedroom, one in the kitchen, one in the living room, one in the
den. Even if no one ever watches the one in the guest room, it is still
using 0.8W. So the correct number is 11,520,000 watt-hours/day. That
translates to about 3,417,600 pounds(1709tons) of coal/year, 24,000
pounds of SO2, 1600 tons of CO2 (coal is mostly carbon).
Have you ever noticed that during a blackout, the power sort of fade out
rather than goes off all at once? Thats because of all the wallwarts and
tv sets discharging into the grid.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
On Thu, 15 Feb 2007 00:03:41 UTC, lyttlec <lyttlec@e.goais.net> wrote:
> >> 0.8w*24hr/day*300,000,000 TV's = 5,760,000,000kw-hr/day in tv's only.
> >> Now add in cell phone chargers, computers, and stereos. All that energy
> >> wasted so we save 1sec when we want to get our daily dose of
> >> mind-numbing drivel.
> >
> > You're another one who likes to distort the truth, then? You might make
> > it a bit more convincing by at least trying to do the calculation
> > correctly.
> >
> > 0.8w*24hr/day = 19.2 watt/hours per day for one TV. Multiply that by
> > 300,000,000 (where did you get the 5 TVs for every man, woman and child
> > in the country from?, but we'll leave that one) and you get 5,760,000
> > kwH per day.
> >
> > So, you're three orders of magnitude out (a factor of 1000, in other
> > words). That's using a false assumption of 5 TVs each for everyone in
> > the UK; perhaps you meant some bigger area, but who knows? you
> > conveniently left that out.
> >
> > Add in the fact that for a lot of that 24 hours the TV would be on
> > anyway. Then also the fact that many people turn the TV off when asleep
> > or not at home.
> >
> > Greenwash. And highly unconvincing greenwash.
> >
> Ok, I did type kw-hr when I did mean w-hr. my bad.
All very well, but it makes a hell of a difference. "Sorry, guv, made a
mistake. But it's really bad anyway".
> OTOH, I should have used 600,000,000 for the number of TVs. The current
> estimate for the US population is just over 300,000,000 and we have
> closer to tvs per person.
So, you're in the USA; I suspected as much. But try to make it clear;
this is a UK newsgroup after all.
Two TVs for every man, woman, child and baby? Well, we always knew the
Yanks were wasteful. And as for pollution: can we say "Bush - Kyoto"?
> I know several families of three that have one
> in each bedroom, one in the kitchen, one in the living room, one in the
> den. Even if no one ever watches the one in the guest room, it is still
> using 0.8W.
If it's switched on at all. My experience is that yes, TVs get left on
standby. But not 24/7. At least not in the UK. Typical day; TV is
switched on when we get up. It goes off when I leave for work (I'm last
out). Goes on when the kids come in. On and off during the evening,
possibly on standby sometimes. Total time on standby probably less than
an hour or two each day. You can't count the time when it's actually
being watched, unless you are bent on distorting the figures.
> So the correct number is 11,520,000 watt-hours/day.
No; 11,520,000 kWh/day (11,520 MWh/day). Do try to keep up.
Or approximately 1000MWh per day, in reality (dividing by 12 since it's
really about 2 hours/day on average; some will be more, some less).
Actually, that's probably a high estimate; I can't see very many people
leaving (say) the guest room TV on when there is no guest. And are there
*really* that many - two for everyone?
That's for the USA. For the UK (this is a UK newsgroup) it's about a
fifth of that. So, 200MWh per day. Worst case - I doubt we have as many
as the USA. Be generous and say half. So a (probably high) figure is
100MWh per day.
Our last electricity bill shows we used 30 kWh/day; we might use a bit
more than most, but let's say on average it's a third of that. So,
10,000 homes worth of electricity. Out of probably about 20 million,
that's not a lot. Even less if you count industry, which is very power
hungry.
So, just scare mongering figures really.
> That
> translates to about 3,417,600 pounds(1709tons) of coal/year, 24,000
> pounds of SO2, 1600 tons of CO2 (coal is mostly carbon).
Actually, it's a damn sight more CO2 than that since there isn't a one
to one relation.
> Have you ever noticed that during a blackout, the power sort of fade out
> rather than goes off all at once? Thats because of all the wallwarts and
> tv sets discharging into the grid.
I'd like to hear technical justification for that. I've not seen it, and
I guess it depends on what caused the blackout anyway.
--
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poster, and specifically may not be published in, or used by http://www.diybanter.com
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
On 14 Feb 2007 18:03:57 GMT someone who may be "Bob Eager"
<rde42@spamcop.net> wrote this:-
>Add in the fact that for a lot of that 24 hours the TV would be on
>anyway.
Rather depends on the household. I suspect that many are only
watched for a few hours a day, as most people have better things to
do with their time.
>Then also the fact that many people turn the TV off when asleep
>or not at home.
An increasing number probably do. However, this is only since
campaigns against leaving things on standby started. However, it is
probably true that houses where televisions are watched a lot are
also the ones where they are left on standby when not on.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
On Thu, 15 Feb 2007 07:43:59 UTC, David Hansen
<SENDdavidNOhSPAM@spidacom.co.uk> wrote:
> >Then also the fact that many people turn the TV off when asleep
> >or not at home.
>
> An increasing number probably do. However, this is only since
> campaigns against leaving things on standby started.
There have been campaigns for a long time now, mainly from the fire
service.
--
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poster, and specifically may not be published in, or used by http://www.diybanter.com
Re: Southern Electric say each mobile phone charger uses 100kWhoursa DAY!
Bob Eager wrote:
> On Thu, 15 Feb 2007 00:03:41 UTC, lyttlec <lyttlec@e.goais.net> wrote:
>
>>>> 0.8w*24hr/day*300,000,000 TV's = 5,760,000,000kw-hr/day in tv's only.
>>>> Now add in cell phone chargers, computers, and stereos. All that energy
>>>> wasted so we save 1sec when we want to get our daily dose of
>>>> mind-numbing drivel.
>>> You're another one who likes to distort the truth, then? You might make
>>> it a bit more convincing by at least trying to do the calculation
>>> correctly.
>>>
>>> 0.8w*24hr/day = 19.2 watt/hours per day for one TV. Multiply that by
>>> 300,000,000 (where did you get the 5 TVs for every man, woman and child
>>> in the country from?, but we'll leave that one) and you get 5,760,000
>>> kwH per day.
>>>
>>> So, you're three orders of magnitude out (a factor of 1000, in other
>>> words). That's using a false assumption of 5 TVs each for everyone in
>>> the UK; perhaps you meant some bigger area, but who knows? you
>>> conveniently left that out.
>>>
>>> Add in the fact that for a lot of that 24 hours the TV would be on
>>> anyway. Then also the fact that many people turn the TV off when asleep
>>> or not at home.
>>>
>>> Greenwash. And highly unconvincing greenwash.
>>>
>> Ok, I did type kw-hr when I did mean w-hr. my bad.
>
> All very well, but it makes a hell of a difference. "Sorry, guv, made a
> mistake. But it's really bad anyway".
>
>> OTOH, I should have used 600,000,000 for the number of TVs. The current
>> estimate for the US population is just over 300,000,000 and we have
>> closer to tvs per person.
>
> So, you're in the USA; I suspected as much. But try to make it clear;
> this is a UK newsgroup after all.
>
I assume you still get billed for on-peak vs. off-peak power? I once
built a wind power system for a friend of mine in the UK. Cut his peak
power usage charges in half.
In the US, I built one for a dairy farm that cut his peak-power by 10%,
and his total bill by over 80%. His total monthly rate was determined by
a 20minute peak. Some simple changes to his local wiring ( so he
couldn't start the welder in his shop while the silage augers were
running) and adding a wind power system to pump and pre-heat water was
all it took.
> Two TVs for every man, woman, child and baby? Well, we always knew the
> Yanks were wasteful.
The Brits isn't any better. There are just fewer of them. To your
credit, power rates there do encourage a bit more conservation.
>And as for pollution: can we say "Bush - Kyoto"?
>
Both suck. Ignore anything any government says. The real solution is
simple : turn it off, and ask yourself if you ever need to turn it on again.
>> I know several families of three that have one
>> in each bedroom, one in the kitchen, one in the living room, one in the
>> den. Even if no one ever watches the one in the guest room, it is still
>> using 0.8W.
>
> If it's switched on at all. My experience is that yes, TVs get left on
> standby. But not 24/7. At least not in the UK. Typical day; TV is
> switched on when we get up. It goes off when I leave for work (I'm last
> out). Goes on when the kids come in. On and off during the evening,
> possibly on standby sometimes. Total time on standby probably less than
> an hour or two each day. You can't count the time when it's actually
> being watched, unless you are bent on distorting the figures.
>
As long as it is plugged into the wall, it is on standby. The on-off
switch no longer turn them off. On one Phillips TV series I worked on,
the on-off switch simply blanked the video and sound. Every thing else
was powered up. Power use in 'on" and "off" was almost exactly the same.
>> So the correct number is 11,520,000 watt-hours/day.
>
> No; 11,520,000 kWh/day (11,520 MWh/day). Do try to keep up.
>
> Or approximately 1000MWh per day, in reality (dividing by 12 since it's
> really about 2 hours/day on average; some will be more, some less).
> Actually, that's probably a high estimate; I can't see very many people
> leaving (say) the guest room TV on when there is no guest. And are there
> *really* that many - two for everyone?
>
Yes, two for everyone. Counting the ones at home, in the bars (the
coffee shop where I am now has two running), airports, the displays
running in the stores, etc., etc.
> That's for the USA. For the UK (this is a UK newsgroup) it's about a
> fifth of that. So, 200MWh per day. Worst case - I doubt we have as many
> as the USA. Be generous and say half. So a (probably high) figure is
> 100MWh per day.
100MWh/day is still a sizable power plant.
>
> Our last electricity bill shows we used 30 kWh/day; we might use a bit
> more than most, but let's say on average it's a third of that. So,
> 10,000 homes worth of electricity. Out of probably about 20 million,
> that's not a lot. Even less if you count industry, which is very power
> hungry.
So it's ok to be wasteful because someone else is worse? You can throw
your Starbucks cup on the street because it's only one cup?
>
> So, just scare mongering figures really.
Not scare mongering, just shaming you. I spend one day a week picking up
trash out of the nice creek that crosses my farm. I pick up over hundred
pounds per month of plastic soda bottles, foam cups, plastic bags from
the grocer. I carry cloth bags to the grocer, which confuses the clerks
no end. Even though I avoid plastic as much as possible ( only buying
beer in aluminum cans or re-usable kegs), I still calculated that I use
the equivalent of one barrel of oil per year in plastic. That translate
to almost a million barrels per day here. Based on my last visit to the
UK (just before 9/11), you aren't all that much better there.
>
>> That
>> translates to about 3,417,600 pounds(1709tons) of coal/year, 24,000
>> pounds of SO2, 1600 tons of CO2 (coal is mostly carbon).
>
> Actually, it's a damn sight more CO2 than that since there isn't a one
> to one relation.
Correct, but you get the picture. Carbon + O2 weighs more than the coal
(carbon + ash + sulfur +...)
>
>> Have you ever noticed that during a blackout, the power sort of fade out
>> rather than goes off all at once? Thats because of all the wallwarts and
>> tv sets discharging into the grid.
>
> I'd like to hear technical justification for that. I've not seen it, and
> I guess it depends on what caused the blackout anyway.
sure. In the past the biggest contributor was electric clocks which
change from motors to generators when the grid is lost. Now it is energy
stored in power supplies. Wall warts have transformers that store energy
that gets dumped back into the grid when grid power is lost. Anything
with a ps does the same. The per-unit energy is less now that we use
switching ps rather than the older inductor (transformer) based designs,
but we have lots more units.
Look up inductors and capicators in an elementary circuit analysis text.
One exercise will probably be to build an r-l-c circuit and measure the
voltage across the elements when power is connected and disconnected.
Another thing to try is to start up an AC motor and monitor the voltage
across the power terminals when the power is disconnected.
Re: Southern Electric say each mobile phone charger uses 100kWhours a DAY!
In article <RJgAh.8571$s47.7351@newsfe4-gui.ntli.net>,
"John" <john.plant510@ntlworld.com> writes:
> Many manufacturers have been aspiring to the "1 Watt Initiative" for some
> years.
>
> Even my old 28" CRT only uses 0.8w on standby.
Ancient Sony 25" (4:3) CRT here, which when run through a plugin power
meter, registers absolutely flat 0 on standby. Not a flicker. I guess
that means 0.something, but considering the newer Panny 29"WS flickers
from 0W to 1W on standby with the same meter, it must be 0.somethingsmall.
Southern Electric say each mobile phone charger uses 100kWhours a DAY! 
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