[K12OSN] Re: alternate power supplies

[Huck]

umm... 24/7 for 20 yrs?
I think your engineers are bad at math =)

YEStation Mini(http://www.affirmative.net/extrathin.html#mini) cost $249 
msrp...
at $0.07 per kWh(kilowatt hour) .. 8hrs a day(50 weeks a year) the cost 
of a 100-watts for that time period for 10 machines = $140
divide that by 10 for the Mini's...$14 a year...a savings of ??? $126... 
the mini pays for itself in energy savings in 2yrs.

thus, a donation of a 100-watt powersupply unit will actually be costing 
you MORE in it's 3rd year of service(in electrical fees) than purchasing 
the MINI's outright.

Regards,
--Huck

pnakashi at k12.hi.us wrote:

>----- Original Message -----
>From: Bryant Patten <opensource at whitenitro.com>
>  
>
>>for a quick and dirty consumer-friendly meter:
>>
>>	KILL A WATT, ELECTRICITY USAGE MONITOR
>>	http://www.x-tremegeek.com/templates/searchdetail.asp?T1=112+0240
>>    
>>
>
>Cool. Thanks for all of your responses. I did further research by speaking to a couple of engineer types I ran into on Saturday. I'll spare you the detailed calculations, but the bottom line is...
>
>If you already have thin clients or can get them for free (donations), it's not worth it to purchase low power alternatives just for the power savings. 
>
>Same goes for CRT vs. LCD monitors.
>
>According to the two engineers, electricity is so inexpensive, you'd have to run the 10 watt thin client 24/7 for over 20 years just to recoup its initial cost. 
>
>Until low power clients and LCD monitors get significantly cheaper, or electricity gets significantly more expensive, a donation is still your best bet, even if the resulting thin client draws 100+ watts.
>--Peter
>
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