It is always good to have a back up when the power goes out , especially if
in an area of the country that drops below 60 deg F. or so.
Small generators such as a common 5 KW will not do much to power electric
heat or a heat pump. They will run the blowers for a gas type of heat.
I have a heatpump and a wood stove in the basement that I seldom use except
if the power goes off. My generator will not power the heat pump, but will
power the well pump and if I cut off most everything else, the water heater.
Heat the water, cut off the water heater and take a quick shower.
More likely the whole house had stored a fair amount of heat and was
"heat-soaked" (learned that from my NASA geek friends - they routinely
"cold-soak" potential spacecraft to chill them down completely to
temperature levels that they would encounter. Lots and lots of very common
and frequently used construction and electronic items just go to pieces at
very low temps.
If the house is closed up and it's sunny, there's a solar boost. Even
humidity gets stored up and the indoor humidity always lags the outdoor one,
at least around here, by several days. Wood, cloth, carpets and lots of
other material absorbs moisture.
The best example I can give for homes being "cold-soaked" is how long it
takes for the bed and lots of other items to come up to room temperature.
The air is warm, but the house and its contents are not. I had a furnace
fail when I was away once and the house was close to freezing. The warmest
part of the house, ironically, was the basement where most of the copper
piping was. I had to get the electric blanket out because the bed kept
sucking the heat out of me.
I just picked a temperature that suited me. With no electricity , there
will be no TV and fridge to make heat. Not sure how long it would take to
get a house from 70 or so down to 60 with out anthing to make heat.
While 60 deg is fine for some, I don't like to be cold and I am cold
natured. We keep the house at 72 in the winter and 74 in the summer.
Due to allageries the windows stay closed here. I have lived in this house
for 10 years and one window was opened once by a man to put a new rug in the
bedroom. He wanted to go in the window with the rug as he said it would be
easier for him to do that.
On Wednesday, October 14, 2015 at 7:15:16 PM UTC-4, Ralph Mowery wrote:
Like someone else pointed out, it's actually the sun that's warming
the house, not the TV and fridge. Fridge today is under 100W, TV, IDK,
maybe 150W for a big one? Really insignificant heat for a home.
On Wed, 14 Oct 2015 17:33:39 -0700 (PDT), trader_4
Look at all the heat coming out of a modern computer. Some of these new
multicore computers have 4 or 5 fans in them because of the excessive
heat they produce. The older computers from the early 2000's and prior
were low powered, but not anymore. If you can live with an older
computer, running Windows XP or an earlier operating system, you can
save a lot of power. But these newer operating systems cant run on that
I had a friend call me because her computer would turn itself off after
10 minutes or less. It was a multicore Dell machine. The CPU fan and
Power supply fan both worked, but the larger fan on the back of the case
had died. It was darn near hot enough at that CPU heatsink to fry an
egg. Because a replacement fan had to be ordered, I rigged up a window
fan and some cardboard to divert the air thru the computer, and told her
to make sure that fan is running if she needed to use the computer, and
to turn off the computer as soon as she is finished. It worked fine
until the replacement fan arrived in the mail a week later.
I never leave on my newer computer in hot weather, but I dont worry much
about using my old early 2000's single core machine with XP.
I need to move up to a new computer, but was not aware of the heat
probs you mention. My ancient P4 box doesn't even leave the PS fan
running during use, only during boot up. I thought the newer CPUs
were similar, but you say multi cores need mucho cooking. Zat include
i5's and i7's?
Thnx. I'll keep this info in mind.
My experience has been the intel processors are not too bad in the
heat department - I have i3, i5, and i7 machines and they all stay
nice and cool without the fans running on high.
Those AMD monsters can be a horse of a totally different color. A few
years ago a customer burned out 3 motherboards - actually BURNED
through the circuit boards. Finally convinced him to go Intel instead
of AMD, even though for a "gamer machine" the AMDs were significantly
Back in the day when I was building 400mHz clones, the AMD chips would
self-immolate if they lost cooling - i.e. if you booted up without
remembering to reattach the fan.
Intel CPUs of the same vintage merely throttled back the operating speed
when the cooling failed. AMD said it was the motherboard maker's
responsibility to cover "cooling failures" but I found that very
unsatifisying. Those huge coolers of the era could pop off if the machine
was moved roughly and more than one CPU was killed on bootup because of it.
I stopped using AMD based motherboards until they finally relenting and
began building CPUs that didn't incinerate themselves.
Shoulda played "Heatwave" by Martha and the Vandelas or at least "Light My
Fire" by the doors. Or maybe Glen Frey's "The Heat is On."
I have a few exploded AMD CPUs in the "Drawer of Horrors" - blew the corner
of the chip right off.
AFAIK, newer computers use less power than old ones. I5's and I7's
run pretty cool. 84-90 watts. And LED's use less power than CRT's.
SSD's use less power than spinners.
High end graphics cards can get hot, but you might not need one.
When I switched from PIII and IV towers to laptops the power dropped from
150W to 17W per machine. With 10 machines throughout the house, that ended
up be quite a visible savings on the power bill. Same for the new
refrigerator and air conditioners. The switch to LEDs has been a little
less dramatic because I was transitioning from CFLs, not incandescents.
Few people do and kids seem to want Play Stations and X-boxes now instead of
PCs and that makes sense. I found nothing twitchier and quirkier than high
end graphic cards.
It used to take ATI several versions to get their priciest cards to
stabilize. Even then there was always an occasional GPF or BSOD in the
middle of a game. I'm very happy using laptops and since I use them to
power much larger monitors, I can get units with cracked screens for a song
on Ebay. The only game still on any of my PCs (a retired tower unit I light
up every now and then) is Tiberian Sun "Command and Conquer." The little
soldiers are always polite and respectful, even after you've sent then on a
suicide recon mission.
Maybe it's time to upgrade your computer...
I have a new-ish quad-core i7-4790K, 16GB RAM, 1 TB internal hard drive,
1TB external hard drive, 256GB SSD, 1 TB SSD, fanless GTX750 graphics card,
TV tuner card, firewire card, Samsung LCD monitor, cable modem, and
The whole she-bang runs on a Cyberpower UPS and only uses 81 watts under
typical loads (displayed on the UPS). That drops to around 60 at night when
I turn off the monitor and the hard drives power down.
That's basically equivalent to a single incandescent light bulb.
If I really push it processing videos, I can get it up to 130 watts or so,
but that's short lived.
Heat output is minimal. CPU-ID hardware monitor shows my CPU running at 98F
degrees, the other components are at 85F-94F degrees. That's less than my
own body heat (98.6F). :)
On Thursday, October 15, 2015 at 7:32:58 PM UTC-4, HerHusband wrote:
Kind of what I was thinking too.... Using an i7 here and can barely
hear the fan, there is no bulk air flow that you can feel blowing out
the back with your hand. Power supply is smaller than what they typically
were 20 years ago and back then you could feel the air blowing out the
back, sometimes with multiple fans. The have had an energy star program
to reduce PC power use for a couple of decades now.
I work in a quiet home office so I don't want to listen to computer fans
all day. I replaced all of my CPU and case fans with these GELID FN-PX12-15
fans. Absolutely silent unless I'm really pushing the system hard.
I have an Antec 650 watt power supply, but am obviously only using a
fraction of the power it can supply.
Yeah, before I upgraded my computer a few years back, my computer provided
a bit of heat under my desk. I was surprised by the temperature difference
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