[huskerlug] Re: A 100 watt laptop requires 960 lbs of coal per year!
- From: Joseph Smith <joe@xxxxxxxxxxxxxxx>
- To: huskerlug@xxxxxxxxxxxxx
- Date: Sat, 29 Mar 2008 21:21:37 -0500
it amazes me that people still think climate change isn't real. You
have ignore a great wealth of evidence- not the least of which is
measurable sea level increases, increased global temperature averages,
mass extinction of amphibians (upwards of 50% of all amphibian
species), etc..
and some consequences that are already playing out:
Longterm droughts in the southwest of the US, Africa, and Australia
possible shutdown of the gulf stream, which will result in a cooler
Europe
a few islands that are actually underwater now (remember that one
evacuated last year, over 75,000 people-- i don't want to take the
time to find a lin, you all can use google)
etc, etc
AND WHAT GRAVY TRAIN?
seriously... there is a hell of a lot more money to be made in
destroying the environment then saving it. Politicians have plenty of
reasons NOT to cap carbon emissions and research grants pale in
comparison even to the money spent lobbying against carbon cap measures.
I really hope governments start listening to experts and not your
average american idiot that doesn't understand the dynamics of climate
change short of the crap he/she reads in the news and on "will post
anything for shock value" internet news sites.
-Joe
On Mar 29, 2008, at 3:22 PM, Jim Worrest wrote:
> Yes, it would be a good idea to get a 10 watt laptop to replace that
> 100 watt
> one! ;-) Now, I am all for saving money when it come to the utility
> bill, and
> one shouldn't be wasteful with resources, but are you sure that all
> this global
> warming won't go away when the political season is over and we only
> have to
> suffer the usual amount of hot air from politicians when the main
> election is
> over? 8-) By the way, a lot of this global warming may be fueled by
> politicians and by the scientists who enjoy being on the grants
> gravy train?
>
> "Another Ice Age?"
>
> http://www.junkscience.com/mar06/Time_AnotherIceAge_June241974.pdf
>
> The chicken littles do get the most feed.
>
> It seems that UNL climatologists, haven't joined the fire breathers
> yet?
>
> This is something of a repeat of another message which didn't seem
> to make
> it to the list? ---Jim
>
> Joseph Smith wrote:
>> Apple seems to be more 'green' than your average computer company.
>> All =20=
>>
>> apple computer- notebooks through desktops- automatically go to
>> sleep =20=
>>
>> after a preset amount of time. Sleep mode has all the advantages of
>> =20
>> just leaving your system on and none of the disadvantages.
>>
>> -Sleep mode consumes a very small fraction of the power having your
>> =20
>> computer 'on' does.
>> -When asleep it can be 'woken up' by LAN activity so your computer
>> is =20=
>>
>> still available for remote connections.
>> -At least on Macs it won't go to sleep if you have a program
>> actually =20=
>>
>> doing something (for most people, their computers sit idle most of
>> the =20=
>>
>> day acting as dumb loads)
>> -Computers generally 'wake up' in less than 5 seconds
>> -All your open programs will still be there!
>> Even if the cost of electricity isn't a concern to you consider the
>> =20
>> amount of power that would be saved (and CO2 that wouldn't be =20
>> released) if Windows and other OSs besides OSX had sleep mode as =20
>> default behavior of an idling system.
>>
>> Where I work all of the Windows and Linux severs stay ON 24/7/365.
>> I =20
>> guess I should do my part and bring up the benefits of changing a =20
>> couple of simple settings in windows..
>>
>> -Joe
>>
>>
>> On Mar 28, 2008, at 8:00 PM, GreyGeek wrote:
>>
>>> Excellent comments, Charles!
>>> I went out to Amazon to see what a "Kill-a-watt" would cost and
>>> saw =20=
>>
>>> some
>>> interesting comments. Here is one:
>>> "If you are a "Miser," this device will be your best friend. I
>>> bought
>>> the "Kill-A-Watt" because I suspected that our old Fridge was
>>> shooting
>>> up the electric bill. I plugged the Fridge into the meter and left
>>> it
>>> for 3 days. I was very surprised to find out the the fridge was only
>>> burning about 1.5 KWH (Kilowatt Hours) per day, which is about
>>> what it
>>> should.
>>>
>>> Now I am going around the house and plugging other appliances in
>>> for a
>>> couple days. The real shocker was that my "economical" eMachines PC
>>> along with a CRT monitor was using more energy than the fridge! The
>>> computer was burning almost 2 KWH per day. I made changes to the =20
>>> energy
>>> saver software in Windows, so that the monitor automatically shuts
>>> off
>>> in 10 minutes and the computer hibernates in 1 hour. This has
>>> brought
>>> the daily consumption down to 1 KWH.
>>>
>>> For those of you who don't understand KWH, its a measurement of =20
>>> electric
>>> usage by the power company. To be simple, using a KWH is about .
>>> 08=A2 =
>> in
>>> our area. So, if you save 1 KWH per day, you save .08=A2 After a =
>> month's
>>> time, it's about $2.48. After a year it's about $30 bucks. The
>>> savings
>>> add up over time.
>>>
>>> With the Kill-A-Watt, I've found out lots of interesting things:
>>>
>>> My Mac Mini with a LCD monitor uses about 1/2 the power of my =20
>>> eMachines
>>> Tower with CRT. That's 70 Watts vs. 140 Watts.
>>>
>>> My Electric Blanket which I though was "economical" pulls 120 Watts
>>> during operation. It actually uses 1 KWH per day. I even found out
>>> =20
>>> that
>>> the blanket burns 10 Watts when the power switch is off!
>>>
>>> I found many "power bandits" in my home. These are devices like
>>> cellphones, scanners, routers, modems that have those little black
>>> =20
>>> power
>>> blocks. Most of these devices use 5 to 10 watts with the power
>>> switch
>>> off. With the Kill-A-Watt, I was able to find the biggest
>>> offenders =20=
>>
>>> and
>>> plug them into a timer that shuts off each night when they are not
>>> =20
>>> in use.
>>>
>>> If you are truly obsessive about your electrical bill like me, you
>>> can
>>> make a nice Excel spreadsheet will all you appliances. You can enter
>>> Watts, Kilowatt Hours, Price per hour and than figure if replacing a
>>> device would pay for the purchase and how long it will take.
>>>
>>> As everyone says in their reviews, "This device will pay for it's
>>> =20
>>> self."
>>> "
>>> Charles Leslie wrote:
>>>> Actually turning off your laptop won't make a relevant
>>>> difference, I
>>>> would argue.
>>>>
>>>> Alternatively you could run your laptop off of a charge from a
>>>> solar
>>>> panel or other renewable energy source. But you'll see why it's a
>>>> moot point here in a minute...
>>>>
>>>> Here's some more technical information on how much energy a
>>>> laptop =20=
>>
>>>> uses...
>>>> http://www.codinghorror.com/blog/archives/000562.html
>>>>
>>>> So as you can see, simply turning it off doesn't solve that
>>>> problem =20=
>>
>>>> if
>>>> the battery is charging/discharging.
>>>>
>>>> But wait... In fact most consumer electronic devices consume power
>>>> even when they are not powered on. Here's an interesting article
>>>> on
>>>> that...
>>>> http://wcco.com/consumer/plug.in.appliances.2.372422.html
>>>>
>>>> So as you can see, you can't enjoy a modern lifestyle and still be
>>>> 100% eco friendly unless you make some seriously drastic changes
>>>> that
>>>> most average people aren't affluent enough or willing to allocate
>>>> the
>>>> time or resources to.
>>>>
>>>> Most people that spend all their time sorting their garbage and
>>>> protesting SUV fuel consumption usually would never think to turn
>>>> their air conditioning up by 5 degrees in the summer time, or stop
>>>> having babies.
>>>>
>>>> I don't think that our looming energy crisis is going to be
>>>> helped by
>>>> your personal efforts. It can only be solved macroscopically by
>>>> economic force, or collective social policy. All turning off your
>>>> lights (or unplugging your laptop) is going to do is help you
>>>> save a
>>>> few dimes on your electric bill.
>>>>
>>>> On Sat, Mar 22, 2008 at 2:27 PM, GreyGeek <jkreps@xxxxxxxxxx>
>>>> wrote:
>>>>
>>>>> http://en.wikipedia.org/wiki/Coal#World_coal_reserves[1]
>>>>>
>>>>>
>>>>> Running one 100 watt computer for one year requires 876 =20
>>>>> kW·h (100 W
>>>>> &tim24 h/day ×365 {days in a year} =3D 876000 W·h
>>>>> =3D =
>> 876
>>>>> kW·h). Converting this power usage into physical coal =20
>>>>> consumption:
>>>>>
>>>>>
>>>>> It takes 438 kg (966 pounds) of coal to power a computer for one
>>>>> =20
>>>>> full year.
>>>>> One should also take into account transmission and distribution
>>>>> =20
>>>>> losses[2]
>>>>> caused by resistance and heating in the power lines, which is in
>>>>> =20
>>>>> the order
>>>>> of5–10%, depending on distance from the power station and
>>>>> =20
>>>>> other
>>>>> factors.
>>>>>
>>>>>
>>>>> It also generates about 800 lbs of CO2
>>>>>
>>>>>
>>>>> Moral: Turn you laptop off when you are not using it.
>>>>>
>>>>>
>>>>>
>>>>> --- Links ---
>>>>> 1 http://en.wikipedia.org/wiki/Coal#World_coal_reserves
>>>>> 2 http://en.wikipedia.org/wiki/Power_line#Losses
>>>>>
>>>>> -- Binary/unsupported file stripped by Ecartis --
>>>>> -- Type: image/png
>>>>> -- File: 541a6f12f0b495022ce2949aea4a5057.png
>>>>>
>>>>>
>>>>>
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>>>>>
>>>>>
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