I feel for you!!
On 2021-07-21 22:21, Eric Oyen via PLUG-discuss wrote:
Well, yes and no.
During the “dry months” it can be a little over efficient. During the
110 degree days with less than 5% humidity, it can maintain the place
at 80-85 degrees. During the monsoon (especially this last week), it
can be miserable, although cooler than outside. It was over 90 in the
house today and almost as muggy as any coastal city. With that much
moister in here, things tend to get sticky and mildew can build up
rapidly. So, during the cool of the night (if you call 90 outside
cool), we put it on vent and dry out the house a bit.
And yeah, all this moister can be hell on computer equipment. Contacts
tend to corrode, dust starts to become more conductive, etc. Now, if I
had an ammonia chiller unit here with the condenser coil being
pre-cooled by the evaporations cooler, we could be dry as a bone in
here and 80 degrees regardless of outside temp. The reason I specify
an ammonia chiller, it doesn’t require a compressor to operate (just a
low value thermal exciter to get the ball rolling) Sure, running an
extra fan inside to blow air across the coil might take a few extra
pennies, but the chill during the heat would be more than worth it.
-Eric
From the Central Offices of the Technomage Guild, HVAC Dept.
On Jul 21, 2021, at 6:50 PM, Keith Smith via PLUG-discuss
<plug-discuss@lists.phxlinux.org> wrote:
Hi Eric,
I assume you live in the valley? And you use a master cool evaporative
cooler... Off topic question - Does your master cool, cool your house
reasonably in the summer and more so during the monsoons?
On 2021-07-21 15:50, Eric Oyen via PLUG-discuss wrote:
Back when I ran a home server on my Athlon X2 with 1500 W supply, the
machine never drew that much. Even with several disks spinning, 8
VMWare instances going and a few other goodies, that machine never
drew more than 600w at maximum. I kept it live 24/7 for a few years
and it added less than $120 yearly to the electrical bill. These
days,
that machine is out of service and is only good for parts. My Mac
mini, which draws at most 100 W under full load is on 24/7 and I
don’t
even see it add that much to the electrical bill here. There are
really only 3 high draw appliances in this house now:
1. The refrigerator
2. The stove/oven
3. The master cool evaporative cooler. Everything else either runs on
wall warts or only gets used occasionally. In fact, we spend less
than
$150 a month here for electric. Now, if I put that Athlon X2 back
into
service, we might see $10 a month in extra use. I am still
contemplating putting it back up and using it as my go to linux
development machine.
-Eric
From the Central Offices of the Technomage Guild, Utilities Dept.
On Jul 21, 2021, at 7:33 AM, Keith Smith via PLUG-discuss
<plug-discuss@lists.phxlinux.org> wrote:
Hi,
I just read this quote about the electrical costs to run a web
server from home:
Cost: While it may sound cheaper to use that computer lying around
doing nothing when creating your web server, when you factor in the
cost of powering an old computer 24 hours a day, it can get very
expensive. A 250W desktop computer running 24 hours per day at 12
cents per KW/h is a whopping $262.00 per year!
---
I think their math is wrong.
The average residential electricity rate in Chandler is 10.85¢/kWh.
I'm thinking a low traffic PHP web server running on an old Dell
with a 400 watt power supply is not using but maybe 100 watts on
average. I've read that the computer should use no more than half
the power supply capacity. Is this correct?
If my home web server is using 100 watts an hour that mean 100 watts
* 30 days * 24 hours or 72K watts.
I'm thinking 72 * .1085 = $7.81 a month.
Any thoughts are much appreciated.
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