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How long does a freezer stay frozen when the power goes out?

woodgears.ca

221–230 of 384 posts

Re: How long does a freezer stay frozen when the power goes out?

#221

Earlier quoted context omitted.

Would you use the same reasoning against exercising?

Hopefully you are not virtue signalling about saving the environment when you exercise.

What? It's you who suggested avoiding extra movement may be ecologically beneficial due to less food consumed. I have no idea why you're pulling virtue signaling into this.

Re: How long does a freezer stay frozen when the power goes out?

#222

Hi. Actualexperience here... it depends on the ambient temperature and how much stuff is in said freezer. So heres a data point: Freezer: normal upper level refrigerator freezer chock full of frozen fish caught on holiday in Alaska. Place, Time: Houston, TX, Late Summer, Hurricane Igor just hit and knocked our power out for 14 days. Findings: We kept the freezer shut and at about 4-5 days the fish was noticeably thaw…

Houstonian here — did you mean Hurricane Ike (Sept. 2008)?

Hurricane Igor (Sept. 2010) hit Canada, not Houston. https://en.wikipedia.org/wiki/Hurricane_Igor

(In Hurricane Ike, we lost power for seven days, and ice and dry ice at the local grocery stores were rationed. We have a gas range and a gas grill in the backyard hooked to the natural-gas line. Every night for the first few nights, quite a few neighbors came over to grill and share stuff from their freezers; we cooked side dishes on the gas range in the kitchen. Everyone sat around and ate and talked on the patio by candlelight. It actually was kind of a nice time, especially since the weather was unseasonably pleasant for that time of year.)

Re: How long does a freezer stay frozen when the power goes out?

#223
post #28

Earlier quoted context omitted.

I'd have to do the calculations but wouldn't you be better off with a solution that just barely froze at freezer temps? Because of latent heat of melting? i.e. you want it to freeze--just at as low a temperature as possible given the freezer temperature. Your basic point makes sense to me though of course thawing isn't even. ADDED: Doing the calculation. It takes 334 joules to melt 1g of water vs. about 4 joules to r…

Completely saturated salty water freezes right around -6F or -21C. And most home freezers are set to right around that for energy conservation reasons, but max out even lower. So you could use any briny water and it will phase change before your food melts. I'm surprised a 12v based deep freezer that runs off a reasonably sized solar panel is not more popular/affordable. With the right amount of thermal mass, and goo…

12V/120V freezers do exist and are marketed towards RV, camping, and off grid markets. Disadvantage is they tend to be smaller, cost more. But they are very efficient. Where a residential freezer might draw a couple of hundred watts dual voltage fridges draw 25-50 watts. And automatically switch between 12VDC and 120VAC. So they can be connected to both shore power and a battery at the same time and it 'just works'

Re: How long does a freezer stay frozen when the power goes out?

#224

Earlier quoted context omitted.

Why are you answering the question? The OP isn't asking people, it's the title of the article, which mentions everything you've said in your comment.

The actual article doesn't answer the question and this is actually a much more helpful answer.

It actually does, but not as clearly as I'd hoped.

"for a freezer of this size, completely packed, you would probably have twice as long before running into problems with melting when the power goes out, so about 36 hours. This assuming it's in a room at 19° C (a cool basement). If it were in a hot garage at 30° C, the food would thaw in about 3/4 of the time.

And while the power is out, for each time the door is opened for five seconds, subtract 7 minutes. "

I watched and enjoyed the original video when it came out, so I knew to look for this information in the text, making it easier to find.

Re: How long does a freezer stay frozen when the power goes out?

#225
post #112

> When opening an empty upright freezer, all the cold air can just "fall out" I recently found that the ice-cream refrigerators of street vendors (and everything else that is being sold when the doors are frequently opened) are opening on the top for that exact reason - to not let cold air "fall out" (because cold air is on the bottom)

Technology Connections did a decent video that covers freezer design decisions like that and others: https://www.youtube.com/watch?v=CGAhWgkKlHI

Re: How long does a freezer stay frozen when the power goes out?

#226
post #169

Earlier quoted context omitted.

If the power infrastructure hasn't been restored yet, what are the odds of trash being collected? The freezer at least contains the smell a bit. That fish outdoors in the heat could start smelling even worse.

If you have even the smallest patch of ground, dig a small hole, drop the dead animals/spoiled meat in there, and the smell is gone within minutes. My experience comes from living countryside with two cats dragging in rabbits, rats, pheasants and two/three daily mice and birds in. My cats prefer cat-food, so they drag in the dead animals, tuck it under the couch or behind the fridge, and then eat their favorite chunk…

Exactly. Ground biome is really good at recycling, especially once living matter.

Re: How long does a freezer stay frozen when the power goes out?

#227
post #167

Hi. Actualexperience here... it depends on the ambient temperature and how much stuff is in said freezer. So heres a data point: Freezer: normal upper level refrigerator freezer chock full of frozen fish caught on holiday in Alaska. Place, Time: Houston, TX, Late Summer, Hurricane Igor just hit and knocked our power out for 14 days. Findings: We kept the freezer shut and at about 4-5 days the fish was noticeably thaw…

You missed the perhaps most important datapoint: how often and many times did you open the freezer? Side loaded freezer and fridges are extremely inefficient because all the cold air is let out when you open the door.

> Side loaded freezer and fridges are extremely inefficient because all the cold air is let out when you open the door.

Unless they have drawers https://pc.vertaa.fi/250x250/102776708.jpg

Re: How long does a freezer stay frozen when the power goes out?

#228
post #220

Earlier quoted context omitted.

Then again, hurricanes provide a lot of readily available wood debris.

Freshly downed live trees aren't great for firewood. The moisture content tends to make the wood difficult to light (if you can't spare lighter fluid, diesel, gasoline, candles, etc.) and it tends to produce a lot of smoke once lit. I've done enough camping that I can get wet wood burning if I have enough dry twigs, dry pine needles, birch bark, etc., but if your only experience with starting fires is pouring lighter…

And anything used in construction has been heavily treated to resist water damage, so I wouldn't want to be near those fumes, let alone eat something cooked from them.

Re: How long does a freezer stay frozen when the power goes out?

#229

Earlier quoted context omitted.

If you had a shovel would it not have been the more hygienic disposal option, at about day 7/8 once you were sure the power was not coming back soon, to dig a 3.5 foot deep hole, put the fish in it and cover it over?

I think he described why he didn't get rid of the fish, some times the world is structured in such a way that you really can't handle the obvious things.

Also, whole burying fish may be logically obvious in this case, it is almost never the correct move in any other situation. Actions that defy common sense can be really difficult to commit, particularly in times when the stakes seem high. What if they buried it, the world was ending, and they somehow needed all that food? It's an easier call to make here than it was there.

Re: How long does a freezer stay frozen when the power goes out?

#230

Hi. Actualexperience here... it depends on the ambient temperature and how much stuff is in said freezer. So heres a data point: Freezer: normal upper level refrigerator freezer chock full of frozen fish caught on holiday in Alaska. Place, Time: Houston, TX, Late Summer, Hurricane Igor just hit and knocked our power out for 14 days. Findings: We kept the freezer shut and at about 4-5 days the fish was noticeably thaw…

Houstonian here — did you mean Hurricane Ike (Sept. 2008)? Hurricane Igor (Sept. 2010) hit Canada, not Houston. https://en.wikipedia.org/wiki/Hurricane_Igor (In Hurricane Ike, we lost power for seven days, and ice and dry ice at the local grocery stores were rationed. We have a gas range and a gas grill in the backyard hooked to the natural-gas line. Every night for the first few nights, quite a few neighbors came ov…

That does sound nice. Unfortunate that COVID is really going to make it harder for people to pool resources like that to handle an emergency situation.
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