Chest Freezers; What they tell us about designing for X technology connections heat pump

by alsaCEMusic



This video is super cool. We’re talking about refrigeration, and how the design of a refrigerator affects its energy consumption. Freezers are the perfect place to see this in action, so let’s take a look!
I also made a follow-up video on the second channel with some other info I didn’t talk about here! Go watch, if you like;

These links have been kept deep frozen and are ready for reheating and consumption
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The TC Subreddit

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Chest Freezers; What they tell us about designing for X

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41 comments

Technology Connections 31/12/2021 - 7:01 Chiều

OK, comment-pinning time!
I want to address the whole full-vs-empty fridge aside because I appear to have understood this differently than many people and it illustrates a problem in the video. Lots of people are saying things along the lines of "I thought the point of a full fridge was to minimize the amount of air inside so opening it causes less heat loss." Similar to the whole thermal mass reasoning (which is where I was coming from), this doesn't really matter in the long run. Which of course runs counter to the idea that chest freezers are helped by the fact they have a lid and not a door. So let's talk about that.
The thermal mass of air is tiny compared to any solid or liquid substance. So even if you exchange the entire volume of air in the fridge or freezer when you open it, once it's shut the new air will rapidly cool thanks to the cold walls, shelves, and of course food. That's why the freezer door gets sucked in. This does introduce some quantity of heat, yes, and in theory if you had more stuff in the fridge less heat would be introduced. But honestly I think this quantity of heat is mostly negligible, and I regret not making that clear in the script. I think that the heat introduced from opening the doors a few times is minimal compared to an entire day's worth of natural heat intrusion.
Chest freezers do get some help from the fact that they're sort of "never opened" but I think that more important than even that is simply their massive amounts of insulation compared to a refrigerator. I actually talked more in depth about this in a follow-up video, which you can find here; https://youtu.be/CRBWPbqvqvw
(edited to add;) Having thought through it some more, I imagine the greatest benefit of having the lid on the top is that the cold air isn't being held back by a thin door seal as it is in an upright freezer. I really should get a thermal camera!

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ben corner 31/12/2021 - 7:01 Chiều

That's not steam it's mist

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cdurkinz 31/12/2021 - 7:01 Chiều

Lol that's a neat place to store imacs.

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Knewledge 31/12/2021 - 7:01 Chiều

Off grid solar here. And in Texas. When our climate induced zombie apocalypse hits, I'm going to freeze homemade cool packs and put them in my DOY air conditioner. They don't provide much cooling but if the power fails and it is 120° F outside then they will keep you alive. There is too much humidity for swamp coolers here. I'll have to have a lot of cool packs and rotate them but it does work. Texas has acknowledged 151 deaths from the Great Freeze. If we have a heat related power failure in the summer, I think the death toll will be much higher. Thanks to our solar power and wood stove we were actually kinda comfortable during the Great Freeze. I highly recommend this for those of you who can. Or you can wait for the government to leap into action and fix climate change sometime in the next couple of centuries. Maybe that will happen if Tr**p gets elected in '24 🙄

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Arizona Tallent 31/12/2021 - 7:01 Chiều

11:54: I always thought it snapped/pulled shut because of some hidden line of magnets imbedded in the door and door frame. I still thought this until just now.Congratulations, you taught me something new today.

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Merissa Makes Stuff 31/12/2021 - 7:01 Chiều

I just moved from a place with a manual defrost fridhe/freezer. Omgsh! It put so much water on my floor. A massive nuisance. If you have chronic back pain it is very painful. 🙄😠

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ZambiblasianOgre 31/12/2021 - 7:01 Chiều

Needed a freezer recently. Got a chest freezer because of this video!

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Jacob 31/12/2021 - 7:01 Chiều

Why would anyone buy a freezer on the bottom with a swing out door? That sounds horrifically inconvenient. My parents have a drawer version and it’s not that bad to use. I still prefer the laundry room fridge with a traditional freezer on top setup. The freezer on bottom with a swinging door just sounds horrendous. Btw, with a French door fridge with an ice dispenser in the door, the ice maker is in the fridge and it’s bad. It wasn’t sealed properly so the ice wouldn’t freeze super well so we ended up disabling it and we just use the ice maker in the traditional freezer

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Peter Stratton 31/12/2021 - 7:01 Chiều

Just found Your Channel and subscribed, I loved Physics at School and now see My Kids Watching Your vlogs, best Teacher I've come across, well done.

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Sarawut S. Art 31/12/2021 - 7:01 Chiều

Here in Thailand there are manual defrosting fridges. There's a button you have to push whenever you want to defrost. There's a small bucket just above the compressor and by the time you need to defrost again the water should already have evaporated. But if you let the ice build up too much you'll need an extra bucket.

By the way, we don't call them French/American fridges. We call those "twin door fridges".

Anyway, awesome video as usual.

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christian willis 31/12/2021 - 7:01 Chiều

One point for a fuller fridge (with bay doors) is the mass of the particles devoid of heat are contained. Unlike an empty fridge full of cold air that falls out whenever you open the door being replaced with warmer air.

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Jackie Johnson 31/12/2021 - 7:01 Chiều

When using a chest freezer, how much heat gets in when you have to remove and replace items that are in the way? Could that introduction of heat negate the benefit you would get from having the lid on top?

Also, every time you close the lid of a chest freezer, you are forcing in warm air. Wouldn't it be more efficient to have sliding doors?

Anyways, I would love to see a video where you test out how much the temperature of a regular freezer and a chest freezer changes, not just from opening the door, but from actual use.

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Mats Rappe 31/12/2021 - 7:01 Chiều

Are you only eating pizza?

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Dukefazon 31/12/2021 - 7:01 Chiều

7:43 – you are not taking into consideration that people are constantly opening the fridge door so cold air can easily escape and get replaced with warm air. When the fridge has already cold stuff inside it helps to get the inside air back to where it should be so it runs the system less to reach the desired temperature inside (you kinda touched on this at 12:06 but from a different perspective). The food inside delays the warming up when you open the fridge, it acts like the oil in the oil heater, it's changes the time component or whatever. I try to sound clever but I can't…

I think the version where you pull out the freezer as a drawer is worse becaseu as you pull out the drawer the space the drawer itself and the frozen food occupied gets instantly replaced by the room temperature air, when you pull out the drawer all the cold air escapes instantly no matter how long you are browsing the drawers' contents.

Hehh, I thought the most popular ones would be some sort of crazy walk-in freezers for the rich people 😀

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Ryan Biggins 31/12/2021 - 7:01 Chiều

Aw man, I was really hoping to see a refrigerant phase diagram with the refrigeration cycle steps marked out 🙁

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Dennis W 31/12/2021 - 7:01 Chiều

Stop pushing the global warming SCAM. These companies putting out CRAPPY Refrigerators that last only 4 years is a lot more inefficient

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Dennis W 31/12/2021 - 7:01 Chiều

Stop pushing the global warming SCAM. These companies putting out CRAPPY Refrigerators that last only 4 years is a lot more inefficient than the R12 freon.

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TheodoreHHH 31/12/2021 - 7:01 Chiều

i live in the country and have a chest freezer but i only use it for storing thing like meat and other things i dont use very often and also i use 2 milk crates to hold my foood and i use the gap next to the basket to hole puff pastry sheets

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Pink Sapphire 31/12/2021 - 7:01 Chiều

This channel just exists to perpetuate online arguments.

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Jessica Hamby 31/12/2021 - 7:01 Chiều

All those endless opening and closing freezer and refrigerator doors explained. I knew it on an internal can't explain it level. This explains it. Where are my contemporaries at?

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Joshmix9 31/12/2021 - 7:01 Chiều

"When it's not vomiting ice chunks into your glass at an entirely unpredictable rate" 🤣🤣🤣

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Christian Rourk 31/12/2021 - 7:01 Chiều

Hi I just found your channel the other day while searching for humidifiers and I'm so glad. Thanks so much for making them and sharing all this fun practical knowledge!

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Alex Rojik 31/12/2021 - 7:01 Chiều

Once again a technology connections video has helped me get bonus points for a class.

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Adrian Revill 31/12/2021 - 7:01 Chiều

The freezer on top is more efficient because temperature decreases with altitude 😀

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Marvin De Bot 31/12/2021 - 7:01 Chiều

Ah, Thomas Midgley Jr, what a guy! No single man did more to make life more comfortable nor to did one single man do more environmental damage due to his inventions. One guy managed to be responsible for both CFCs and lead in petrol. Not the legacy he deserves but it's the one he ended up with.

I see you have a Haier freezer, I'm a fan of their white goods, very well priced, well made and very efficient.

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Ann Dennis 31/12/2021 - 7:01 Chiều

We own 2 chest freezers and from the get go they started 'frosting' up. I swear that the lid has no insulation and that is the problem. My husband swears it's my fault because I don't press down on the lid after removing food. He has taken to putting weight on the lids to keep them down, but they still frost up. Any tips on how to keep frost from building up around the edges. (I also think the gaskets weren't very good at purchase, but what do I know?)

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Nathaniel Li 31/12/2021 - 7:01 Chiều

Screw you entropy!

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R P 31/12/2021 - 7:01 Chiều

The heat output works with or against your HVAC, but if you put the freezer outside in the summer it would use more current, so it's a push.

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Little King John 31/12/2021 - 7:01 Chiều

heyyyy I’ve got that same shirt! I had a feeling you were a tmbg fan lol

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Vintage Moments 31/12/2021 - 7:01 Chiều

you forgot the most important point! less energy used, less $$$ wastes 😀

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Dave Lefevre 31/12/2021 - 7:01 Chiều

You cant hide a body in upright freezer unless you screw the door shut !!

That's why the mafia invented the chest freezer

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murphvienna1 31/12/2021 - 7:01 Chiều

So I'm just strolling around casually on Youtube, watching some mildly interesting yadda yadda, and suddenly say to myself: "No. Stop that. I want to know how a chest freezer works now."

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brett knoss 31/12/2021 - 7:01 Chiều

I'd have thought the drawer freezer would be more efficient, since it would be just a chest freezer that slides under a fridge. I'd also think that the way fridge/freezers ought to work, is by haveing racks that raise and lower from a cooler behind the counterspace.

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WoomyWobble 31/12/2021 - 7:01 Chiều

So… What you're saying is, if I tip my fridge over…

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Initial Aiming 31/12/2021 - 7:01 Chiều

Vomiting Ice chunks 😂

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zac scalafini 31/12/2021 - 7:01 Chiều

What about a slightly cone or trapezoidal shaped chest freezer so that the wider bottom can hold items for longer storage in bottom drawers?

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00ICU812 31/12/2021 - 7:01 Chiều

Best way to make food accessible in your chest freezer is to put some milk crates inside, bags of food get stacked and you can organize easily.

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00ICU812 31/12/2021 - 7:01 Chiều

Older freezers need manual defrosting which takes them out of service periodically?
10 year old me laughs in screwdriver and hammer

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Slippery Rock 31/12/2021 - 7:01 Chiều

Netflix?

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Dane Goff 31/12/2021 - 7:01 Chiều

R-22 turns into somthing like musterd gas, feels great to breath in when brazing in a new switch valve in a heat pump.

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Thermalito Diversion Pool 31/12/2021 - 7:01 Chiều

The earth is a heat pump and saying global warming exists is like saying the sun is shining but this has nothing to do with man or his actions. In fact more carbon released is a critical factor in keeping the earth from turning into a chest freezer. The oil in the ground among other matter is stored carbon that was once organic plant life.

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