h a l f b a k e r y
Thunk.
idea:
add, search, annotate, link, view, overview, recent, by name, best, random
meta:
news, help, about, links, report a problem
account:
Browse anonymously,
or get an account
and write.
Login
Create account.
|
|
|
Imagine a refridgerator with a thumb button on the handle
where you grip tp open it that releases the negative ressure
or re-evacuates the fridge of air (produces a vacuum) in the
fridge... Not only would this give the refridgerator greater
effeciency (heat transfer-wise) but also keep any food
within
it from going bad...(I think...)
The fridge would have to re-fridgerate for a while to bring the
temperature back down after someones opens it, but after it
does this it could re-vacuum the fridge...
halfbaked?
Nitrogen Fridge
http://www.halfbake...a/Nitrogen_20Fridge
A related idea: replace air with inert gas [wiml, Jun 14 2002, last modified Oct 04 2004]
[link]
|
| |
It would be harder for a vacuum fridge to cool things down. It would be like a giant thermos. Once they were cold, though, would the vacuum help keep them that way? I don't think so: the walls of the fridge will have to be cold, and the amount of heat lost to the environment when the door is closed depends on the temperature of the walls of the fridge. The vacuum fridge *would* be able to weather a power outage better, though, as long as you didn't want to open it... |
|
| |
Actually, this idea is back to front; the best sort of fridge would be a tank of chilled brine (2 centigrade)with a circulating stirrer - this would cool any food placed in it really fast. The technique is used in commercial food packaging plants.
But make sure the packets are hermetic, unless you like salt with everything. |
|
| |
Image: Open the door to your commercial-sized fridge; Duck potholders, pans, knives, etc. flying across the room, into "space". |
|
| |
Good if you have an alien monster in your house and you're having trouble getting rid of it... |
|
| |
Just don't put pop bottles in there. Come to think of it, don't seal anything up before putting it in there. |
|
| |
No good for frequently used fridges (almost any family's fridge). You wouldn't want to evacuate it after every time the kid gets a snack or drink out. |
|
| |
But probably good for storing your winter's supply of pemican. Unless you've got a constant pemican snacker in your wigwam. |
|
| |
why would it be harder for a vacuum fridge to cool things down? i would think that in a vaccum, if anything, there would be a lesser need for cooler temperatures anyway... |
|
| |
all these other "issues", they can be dealt with through design... |
|
| |
Make the door to the 'fridge clear and put two of those full sleeves in the lower part of the door. When the user wants something, they use the full sleeves to put the item into one of the airlocks on the side of the 'fridge. |
|
| |