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Home > Archive > Alternative Power sources > September 2007 > Refrigerator power consumption
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Refrigerator power consumption
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| Steve Ackman 2007-09-12, 5:25 pm |
| A while back there was a thread about refrigerator
energy usage. Well, my Kill-a-Watt was on the
dehumidifier at the time, so it took a while to get
around to doing ours. This is a side-by-side with
ice and water through the door, thermostat settings
to give -13F in the freezer and 36F in the fridge.
(Fluke 52 reading about midpoint in each compartment)
Model: GE GSL25IFRF BS
KW duration: 311 hours
Energy use: 23.46 kWh
Avg. power: 75.4 watts
Running power: 122 watts or 127 va @ 120.5 VAC
Dataplate rating: 110-127 VAC 11.2 amps
The big question: WHY does the data plate inside
the refrigerator give a rating of 11.2 amps when the
thing draws just over ONE amp when running?
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| Steve Ackman <steve@SNIP-THIS.twoloonscoffee.com> wrote in
news:slrnfegihl.htn.steve@sorceror.wizard.dyndns.org:
> A while back there was a thread about refrigerator
> energy usage. Well, my Kill-a-Watt was on the
> dehumidifier at the time, so it took a while to get
> around to doing ours. This is a side-by-side with
> ice and water through the door, thermostat settings
> to give -13F in the freezer and 36F in the fridge.
> (Fluke 52 reading about midpoint in each compartment)
>
> Model: GE GSL25IFRF BS
> KW duration: 311 hours
> Energy use: 23.46 kWh
> Avg. power: 75.4 watts
> Running power: 122 watts or 127 va @ 120.5 VAC
>
> Dataplate rating: 110-127 VAC 11.2 amps
>
> The big question: WHY does the data plate inside
> the refrigerator give a rating of 11.2 amps when the
> thing draws just over ONE amp when running?
>
probably needs that when starting from warm. thats what always kills you
... getting the damn thing cold to begin with.
Defrost it and then measure and i'll bet you'll see a huge drain
Once its cold it just has to maintain that -- thats where the efficiency
of the insulation etc comes into play.
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"Steve Ackman" <steve@SNIP-THIS.twoloonscoffee.com> wrote in message
news:slrnfegihl.htn.steve@sorceror.wizard.dyndns.org...
> A while back there was a thread about refrigerator
> energy usage. Well, my Kill-a-Watt was on the
> dehumidifier at the time, so it took a while to get
> around to doing ours. This is a side-by-side with
> ice and water through the door, thermostat settings
> to give -13F in the freezer and 36F in the fridge.
> (Fluke 52 reading about midpoint in each compartment)
>
> Model: GE GSL25IFRF BS
> KW duration: 311 hours
> Energy use: 23.46 kWh
> Avg. power: 75.4 watts
> Running power: 122 watts or 127 va @ 120.5 VAC
>
> Dataplate rating: 110-127 VAC 11.2 amps
>
> The big question: WHY does the data plate inside
> the refrigerator give a rating of 11.2 amps when the
> thing draws just over ONE amp when running?
Does your Kill-a-Watt have a max Watt function?
The 11.2 amps will be the starting surge of the compressor (with any lights
and fans and maybe any heating elements on as well) basically the highest
amperage you could see in the worse case. Like starting the compressor again
after it has only just turned off, bigger A/C units have timers to stop the
compressor turning on within a few minutes of turning off, fridges may have
this I don't know. So the dataplate just lets you know that you shouldn't
have 2 of these fridges on the same 15 amp circuit because if they both
started at the same time they may pop the breaker. Of course they might run
for years before this would happen.
Stuart
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| Vaughn Simon 2007-09-12, 8:25 pm |
|
"stu" <nowhere@justyet.com> wrote in message
news:46e87477$0$1028$afc38c87@news.optusnet.com.au...
> Does your Kill-a-Watt have a max Watt function?
> The 11.2 amps will be the starting surge of the compressor (with any lights
> and fans and maybe any heating elements on as well) basically the highest
> amperage you could see in the worse case.
Also, don't forget the defrost heaters. Mine takes nearly 1 KW when it is
in the defrost cycle.
Vaughn
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| Neon John 2007-09-13, 3:25 am |
| On Wed, 12 Sep 2007 16:18:55 -0400, Steve Ackman <steve@SNIP-THIS.twoloonscoffee.com>
wrote:
> A while back there was a thread about refrigerator
>energy usage. Well, my Kill-a-Watt was on the
>dehumidifier at the time, so it took a while to get
>around to doing ours. This is a side-by-side with
>ice and water through the door, thermostat settings
>to give -13F in the freezer and 36F in the fridge.
>(Fluke 52 reading about midpoint in each compartment)
>
>Model: GE GSL25IFRF BS
>KW duration: 311 hours
>Energy use: 23.46 kWh
>Avg. power: 75.4 watts
>Running power: 122 watts or 127 va @ 120.5 VAC
1.81 kWh per day. Not bad for a side-by-side. What year model is this?
>
> Dataplate rating: 110-127 VAC 11.2 amps
>
> The big question: WHY does the data plate inside
>the refrigerator give a rating of 11.2 amps when the
>thing draws just over ONE amp when running?
That's probably the draw when the defrost heater is on. 1344 watts seems about right
for a defrost heater. See if you can catch it on the defrost cycle sometime and see.
John
--
John De Armond
See my website for my current email address
http://www.neon-john.com
http://www.johndearmond.com <-- best little blog on the net!
Tellico Plains, Occupied TN
What do you call 4 Blondes in an Abrams? Air Tank.
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| philkryder 2007-09-13, 3:25 am |
| On Sep 12, 1:18 pm, Steve Ackman <st...@SNIP-THIS.twoloonscoffee.com>
wrote:
> ...
> to give -13F in the freezer and 36F in the fridge.
Why do you keep the freezer so far below 0F?
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| Steve Ackman 2007-09-13, 1:25 pm |
| In <7i9he3la4cvpjpejouo730qvr6gkqm2313@4ax.com>, on Wed, 12 Sep 2007
22:55:44 -0400, Neon John, no@never.com wrote:
> On Wed, 12 Sep 2007 16:18:55 -0400, Steve Ackman
<steve@SNIP-THIS.twoloonscoffee.com> wrote:
>
>
> 1.81 kWh per day. Not bad for a side-by-side. What year model is this?
There's no year given on the dataplate, but since
we got it June last year as a scratch'n'dent/floor
model from Home Depot, I assume it's late 2005 or early
2006.
>
> That's probably the draw when the defrost heater is on. 1344 watts seems about right
> for a defrost heater.
I guess that probably is most likely. I wouldn't
have imagined such a huge heater, and while the KAW
was on it, I never saw any readings other than 0, 2,
or the 120-125 range while it was running.
Now that I think about it though, I guess if you
want to heat only a very localized area, lots of heat
for a short duration does it much better than less
heat for a longer time period.
> See if you can catch it on the defrost cycle sometime and see.
Next time the KAW is on the fridge, I'll try to
catch it, but I suspect it the defrost cycles are few
and of fairly short duration.
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| Steve Ackman 2007-09-13, 1:25 pm |
| In <1189666061.169715.278580@19g2000hsx.googlegroups.com>, on Thu, 13
Sep 2007 06:47:41 -0000, philkryder, alt.google@Kryder.com wrote:
> On Sep 12, 1:18 pm, Steve Ackman <st...@SNIP-THIS.twoloonscoffee.com>
> wrote:
>
> Why do you keep the freezer so far below 0F?
Coffee beans drop from the roaster at around 400F-
425F. Ideally they should be cooled to room
temperature within 3 to 5 minutes to arrest the
chemical changes occurring within the beans... but
those changes don't actually *halt* at room temp,
they just slow down.
My own experiments show that -7F slows the chemical
"staling" processes in fresh roasted coffee beans by
a factor of /about/ 20.
( http://twoloonscoffee.com/storage/temp-offgas.html )
Others have done experiments showing that -20F seems
to be the magic temperature at which those processes
are effectively halted (i.e., proceed too slowly to be
measured after 6 months).
So the short answer to your question is that keeping
the freezer at -13F means I can enjoy month-old coffee
that tastes like it was roasted yesterday; two-month-old
coffee that tastes like it was roasted day before
yesterday.
My roaster capacity is 15 kg so roasting a single
lb at a time is pretty much out of the question. I
have recently made a smaller gas jet so I can easily
do as little as 3 lbs now... even 2 lbs with careful
babysitting and constant tweaking.
http://twoloonscoffee.com/machine/gas-jets.html
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| Ulysses 2007-09-13, 5:25 pm |
|
"Steve Ackman" <steve@SNIP-THIS.twoloonscoffee.com> wrote in message
news:slrnfeik39.htn.steve@sorceror.wizard.dyndns.org...
> In <7i9he3la4cvpjpejouo730qvr6gkqm2313@4ax.com>, on Wed, 12 Sep 2007
> 22:55:44 -0400, Neon John, no@never.com wrote:
> <steve@SNIP-THIS.twoloonscoffee.com> wrote:
>
> There's no year given on the dataplate, but since
> we got it June last year as a scratch'n'dent/floor
> model from Home Depot, I assume it's late 2005 or early
> 2006.
>
seems about right[color=darkred]
>
> I guess that probably is most likely. I wouldn't
> have imagined such a huge heater,
I have an older but it sounds like very similar GE and when it was connected
to my Honda eu2000 generator the engine would go from barely idleing to
almost full throttle when the defrost cycle came on.
and while the KAW
> was on it, I never saw any readings other than 0, 2,
> or the 120-125 range while it was running.
>
> Now that I think about it though, I guess if you
> want to heat only a very localized area, lots of heat
> for a short duration does it much better than less
> heat for a longer time period.
>
>
> Next time the KAW is on the fridge, I'll try to
> catch it, but I suspect it the defrost cycles are few
> and of fairly short duration.
>
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| Ice cream doesnt stay firm unless its about -10F... -20 is better
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| David Williams 2007-09-13, 9:25 pm |
| -> Ice cream doesnt stay firm unless its about -10F... -20 is better
By "firm" I guess you mean rock-hard.
dow
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"David XXXXXXXX" <david.XXXXXXXX@bayman.org> wrote in message
news:1189737373.912.1189731805@bayman.org...
>-> Ice cream doesnt stay firm unless its about -10F... -20 is better
>
> By "firm" I guess you mean rock-hard.
>
> dow
Kind of makes ice-CREAM more ice and less creamy. 5F is fine w/me.....
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| Martin Riddle 2007-09-14, 8:25 pm |
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"Steve Ackman" <steve@SNIP-THIS.twoloonscoffee.com> wrote in message news:slrnfeik39.htn.steve@sorceror.wizard.dyndns.org...
> In <7i9he3la4cvpjpejouo730qvr6gkqm2313@4ax.com>, on Wed, 12 Sep 2007
> 22:55:44 -0400, Neon John, no@never.com wrote:
> <steve@SNIP-THIS.twoloonscoffee.com> wrote:
>
> There's no year given on the dataplate, but since
> we got it June last year as a scratch'n'dent/floor
> model from Home Depot, I assume it's late 2005 or early
> 2006.
>
>
> I guess that probably is most likely. I wouldn't
> have imagined such a huge heater, and while the KAW
> was on it, I never saw any readings other than 0, 2,
> or the 120-125 range while it was running.
>
> Now that I think about it though, I guess if you
> want to heat only a very localized area, lots of heat
> for a short duration does it much better than less
> heat for a longer time period.
>
>
> Next time the KAW is on the fridge, I'll try to
> catch it, but I suspect it the defrost cycles are few
> and of fairly short duration.
>
We have a Freezer on top model that is the same age andit runs at 120W as well. Seems to be the norm for the latest comsumer
consumables.
Cheers
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| Steve Ackman 2007-09-15, 3:25 am |
| In <13ej0iu22umhd2@corp.supernews.com>, on Thu, 13 Sep 2007 11:17:26
-0700, Ulysses, eatmyspam@spamola.com/ wrote:
[color=darkred]
[color=darkred]
> seems about right
>
> I have an older but it sounds like very similar GE and when it was connected
> to my Honda eu2000 generator the engine would go from barely idleing to
> almost full throttle when the defrost cycle came on.
We have a 5500 watt cheapie Chicago brand generator.
Probably the refrigerator has about 50 hours running on
that. I guess we've never hit the defrost cycle while
on generator power, cause I've never heard it bog down
without an obvious explanation (like the microwave
being used, Bunn tank kicking on, or something similar)
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| daestrom 2007-09-15, 1:25 pm |
|
"Jim" <jim@home.con> wrote in message
news:8bmGi.7975$z_5.2171@nlpi069.nbdc.sbc.com...
>
> "David XXXXXXXX" <david.XXXXXXXX@bayman.org> wrote in message
> news:1189737373.912.1189731805@bayman.org...
>
> Kind of makes ice-CREAM more ice and less creamy. 5F is fine w/me.....
I have a side-by-side. I find keeping the ice-cream in the door keeps it a
tad softer than when in the main compartment. So I keep the main
compartment at 0F and the ice-cream in the door :-)
daestrom
P.S. 'course, the doctor suggests I keep the ice-cream at the store and not
bring it home :-)
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"daestrom" <daestrom@NO_SPAM_HEREtwcny.rr.com> wrote in message
news:46ebf110$0$19642$4c368faf@roadrunner.com...
>
> "Jim" <jim@home.con> wrote
>
> I have a side-by-side. I find keeping the ice-cream in the door keeps it
> a tad softer than when in the main compartment. So I keep the main
> compartment at 0F and the ice-cream in the door :-)
I'm in the process of removing the ice-maker equipment to free up more
space (it's broken beyond what I'm willing to repair) so I'm packing in the
ice cream and goodies in the back. Fast moving stuff stays in the door.
>
> daestrom
> P.S. 'course, the doctor suggests I keep the ice-cream at the store and
> not bring it home :-)
>
My doctor says eat as much as possible. I have anorexia. Not the crazy
kind, I just have no appetite and forget to eat......
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| Vaughn Simon 2007-09-17, 8:25 pm |
|
"Jim" <jim@home.con> wrote in message
news:P2EHi.2846$4J3.1171@newssvr22.news.prodigy.net...
> My doctor says eat as much as possible. I have anorexia. Not the crazy
> kind, I just have no appetite and forget to eat......
If we could just figure out how to put that in a pill, we could both be
billionaires.
Vaughn
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| "Vaughn Simon" <vaughnsimonHATESSPAM@att.FAKE.net> wrote in message
news:c5FHi.562301$p47.325716@bgtnsc04-news.ops.worldnet.att.net...
>
> "Jim" <jim@home.con> wrote in message
> news:P2EHi.2846$4J3.1171@newssvr22.news.prodigy.net...
>
> If we could just figure out how to put that in a pill, we could both
> be billionaires.
Wellll, I suffer from migraines, and addiction/dependence on Coca-Cola.
Between the caffeine and narcotics, food is the last thing on my mind.....
>
> Vaughn
>
>
>
>
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| Vaughn Simon 2007-09-17, 9:25 pm |
|
"Jim" <jim@home.con> wrote in message
news:PFFHi.2891$4J3.2339@newssvr22.news.prodigy.net...
>
> Wellll, I suffer from migraines, and addiction/dependence on Coca-Cola.
> Between the caffeine and narcotics, food is the last thing on my mind.....
OK, perhaps the idea needs a bit of work.
Vaughn
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"Vaughn Simon" <vaughnsimonHATESSPAM@att.FAKE.net> wrote in message
news:kYFHi.105228$ax1.58650@bgtnsc05-news.ops.worldnet.att.net...
>
> "Jim" <jim@home.con> wrote in message
> news:PFFHi.2891$4J3.2339@newssvr22.news.prodigy.net...
>
> OK, perhaps the idea needs a bit of work.
We could have a new diet pill with opiates and caffeine and call it
VICO-DON'T!
>
> Vaughn
>
>
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