3 ms·
Since cold air is denser, I always understood that when you open a vertical cooler the cold air just flows out like a fluid (gas) and is displaced by warm air.
by bruce343434 5y ago
Since cold air is denser, I always understood that when you open a vertical cooler the cold air just flows out like a fluid (gas) and is displaced by warm air. This is also why it's good to keep your fridge full, so that it has some thermal mass to it. It's also one of the reasons horizontal freezers are so efficient.
- OJFord 5y agoTo the extent even that supermarkets can get away with having completely open-topped aisle-long chest freezers. Matthias Wandel has done some related fridge/freezer experiments I saw recently via Youtube: https://woodgears.ca/heating/freezer.html https://woodgears.ca/heating/freezer.html https://woodgears.ca/heating/fridge.html https://woodgears.ca/heating/fridge.html (Particularly the (upright) freezer one is more directly about temperature & door opening, from what I recall.)