Chest Freezers; What they tell us about designing for X

"Global Warming", lol. I thought you would have been smarter than that...

Quite remarkable
Lousy
WHICH IS IT

WHY DON'T THEY MAKE DUAL DOOR STAND UP FREEZERS. i'm talking dual horizontal doors not dual vertical doors. This way you could put your high access items at the top, and your longer term storage items on the bottom. This would cause less 'cold loss' when opening the door as only half of it would spill out when you open the top door more frequently.

Slight oversight... Adding ice packs to an ice chest doesn't only increase the amount of thermal mass. You forgot to mention the magic of phase change which helps the ice packs absorb considerably more thermal energy than their mere mass would allow.

Not being a scientist (and not great at understanding fancy words)I may be completely wrong here, but doesn't a refrigerator manipulate entropy rather than completely screw it? Also while I'm here, as we don't use heat pump in Australian lexicon, I take it a refrigerator is an air conditioner, and say a fermentation chamber is a split system?

Ammonia is one of the best, most cost efficient, safest for the environment refrigerants in existence. But, we can't use because of DuPont's greediness.

watched this video twice for researching shopping for a chest fridge

I have seen a stand up freezer where instead of the usual trays you have sort of drawers. Seems like quite a good comprimise to me, most of the air in the freezer is kept in the drawers and should not be dumped on your feet each time the door is open. Granted, when pulling a drawer to access the food there would be an intake of air that will leech cold from the freezer walls and probably mixes with the cold air from the compartment below, but it has to be better than the usual tray based freezers

Loved the Royal Society of Putting Things on Top of Other Things reference!

watching this on a 48inch 4K OLED.... your image quality has become VERY good, sir.

R-1234yf is just scam. It's flammable, like propane, but it has higher global warming potential than propane and propane even makes the systems more efficient. So it's worse for the climate, twice energy consumption wise and if it leaks eventually to the environment it's worse, but will you cost 133 times the same price 🥲

And this is only half the story, as you need 3 times as much R-1234yf compared to Propane for the same system. So the cost difference is 399 times higher for R-1234yf, in practice.

Apart from that R-1234yf is actually less safe than Propane, because of higher system pressure to compensate for lower efficiencies of the medium faults are much more likely. If a fault occurs and refrigerant is sprayed in the engine bay Propane is once again safer, as the auto ignite temperature is higher for Propane.

And since R-1234yf is more likely to ignite in a car crash than Propane, due to the lower self-ignition temperature, we also have to consider what happens if it ignites. It releases hydrofluoric acid (HF), a toxic and corrosive gas, and trifluoroacetic acid (TFA), which will stay forever in the environment - compared to CO2 for propane.

Great stuff!

Close the lid

I do wonder
i have an upright freezer with plastic trays that slide out of it, would these trays help trap the cold air more than, say, a freezer with just shelves?
its different than the one in the video's rather than the whole thing sliding out, only one tray does, so only 1/3 of the total volume at a time

So chest refrigators are possible and cracy energyefficient 🤔

I never would've thought that having a freezer at the top is that much energy efficient than having it at the bottom. I've lived in two flats with top freezers and it was horrible: they were smaller and didn't have drawers, and even two years of dealing with this didn't warm me up to the idea of having a freezer on top. In this flat the freezer is on the bottom and it feels just so much better and easier to me. never thought I'd have to pay extra just for that...

You forgot to mention that the shape of the chest freezer is more efficient. If you want to minimise the barrier where energy is coming in, ideally you would get a sphere. The thinner and longer the freezer, the less efficient it will be at insulation. Basic physics

So yeah... after watching your freeze dryer video, I was immediately thinking... deep freezer, plus a vacuum? I am considering it.

Biggest issue these days is reliability inho,
Three grand for a fridge that goes wrong and cant be fixed after a few years is a terrible use of resourses.
Manufacturers should be forced to give much much longer waratees, one year is rubbish, there is no reason they could not nake things more reliable simply by using better specced components and good design

When I was a kid the local power company ran a series of TV commercials about energy consumption. As a visual aid they had a stand-up refrigerator completely filled with ping pong balls. They would open the door while explaining the ping pong balls pouring out of the refrigerator represented the cold air you were losing by opening the door. It's probably been 50 years since I saw one of those public service commercials and I still can't open a refrigerator door without imagining all the ping pong balls falling out.

I appreciate the "on the other hand" joke with "maybe" writen on your hand lol

❤❤❤

Hisense, at least in Australia have a 7 star fridge - HRBM418D. Generally I’d only seen 1-5 star but somehow they added two extra stars to the energy rating on a bottom freezer unit. Curious how they do it.

I love your videos. So well done ❤

Please explain why i suddenly care about my energy efficiency even tho my electricity bill is 58 dollars in spring and fall and 150 in the summer and winter, i mean, we all love saving money, but i make people jealous over my electricity bills.

One could, in theory, put shelving in your chest freezer.

Why can’t you just make a chest freezer deeper?

The CFC ban was based on junk "science" speculation, and motivated by the desire to force people to pay more for still-patented, inferior cooling alternatives.

i actually have those as my fringe and as my freezer and my kitchen top is on top of them. Also means that i have to clean up when i wanna get food.

When I close freezer. And then try to open again.theres a really strong suction.
Assuming that warm air entered and then cooled causeing the lower pressure once the air cooled

The sliding freezer displaces the cold like a piston when you slide it closed...like a leaf blower

We have a walk in refrigerator and freezer at work... I'm the food

Im watching the video stressing about work in 9 hours ALSO WEARING SIMPSONS PAJAMAS

My guess about the bottom freezer being less efficient is :
- it's closer to the only thing that makes heat in this device, which is the pump
- it has less depth for the same reason, so it has slightly more surface area for the same volume, which implies more heat dissipation

I learn so much about buy appliances from you perfect engeering

You might find that raccoon that my dad killed 2 years ago in our deep freezer. Jk. We don't have a deep freezer.

just bought the chest freezer ive been dreaming of buying for a couple of years and i came back to watch this video to celebrate.

"screw you entropy!" pffffahahahaahaha 👋

overheat the size pump! yay!

Thumbs down for climate change bs.

It frustrates me as a consumer that insulated draws are not a thing

I'd happily sacrifice a little bit of floor space for insulated draws that would presumably drastically improve efficiency but also improve access compared to chest freezers

The royal sociaty of putting things on top of other things😅