"Save the Ice Cube project"...
- Thread starter sUn
- 24 comments
- 4,113 views
- 5,622
- eMadman
When I saw the title, I thought you were talking about the rapper 
.
if the box has to be made by you, find a good inulating material that won't allow outside heat to affect it. Maybe use several layers of thinsulate or something? Several because you need extra layers to keep the outside temperature out of the box for as long as possible while at the same time keeping the inside temperature from escaping
.if the box has to be made by you, find a good inulating material that won't allow outside heat to affect it. Maybe use several layers of thinsulate or something? Several because you need extra layers to keep the outside temperature out of the box for as long as possible while at the same time keeping the inside temperature from escaping
We can't use things like Freezer's and stuff, it has to be stuff you can find at home. It's only a specific size too, the "box" has to be the size of a shoebox or just a bit bigger, and we have to modify that box so that it can keep the ice cube from melting.
We can't use any type of energy source.
We can't use any type of energy source.
- 610
we did something like this several years ago in gr 7...except it was to keep boiling water at boiling point...what we used was a thermos...then covered it in insulation and rapped that with ducttape...another layer of insulation...rapped that in ductape...then another layer and ducttape
- 88,614
- Rule 12
- GTP_Famine
You wouldn't want to - you want to supply as little energy to the ice cube as possible.
Heay energy moves by conduction, convection and radiation. You need to limit all of them, which means finding a poor conducting medium and making a box out of it (which should immediately hinder convection and radiation).
In the molecular biology industry, samples which must be stored in the freezer (-20C and below) are shipped in sealed foam rubber boxes packed with dry ice granules.
Order something that comes packed in dry ice, wrap the ice cube in aluminium foil and pack it in the middle. Then seal the box back up. Done and done - should be good for 2-3 days.
- 9,899
Well, get detailed plans on how insulated thermos' are made and then do your best to replicate one for yourself. I can't see there being a better way of doing it.
- 5,178
- Worcester, MA
- skip0110
Rumple's right--you have to esentially mimick a thermos. This means you have to prevent heat loss in 3 ways:
1) Radiation. Solution: make the inside reflective.
2) Conduction. Solution: create a vacum gap between two layers of the outer wall of the container--like as in a double pane window.
3) Convection. Solution: Duh. Make sure the container is closed.
If you google these words, I'm sure you will get very specific descriptions of their meanings. I dont feel like typing it all out now.
- 4,767
- Kansas City, KS
- FlyingAGasoline
you could epoxy peices of styrofoam together to make a box, then put foil on the inside, and put the ice cube inside of a watertight container made of foil or plastic wrap and surround it with dry ice,and then epoxy the lid on the box. ony thing is to open it you would have to destroy the box.
- 5,842
- Forgotten Wing
Ok, here's what you do; you put the ice in a box, somehow suspended (cotton string would probably be good). You then fill that box with sawdust, and put a seal on. Puncture the seal with a vacuum and suck out all the air. Then, but the box with the compressed sawdust surrounding ice into another box made of something highly reflective (supported on wooden legs). This piece of Ice should then last you for a good long while.
BTW, your teacher's wrong about the longest that they've been able to keep Ice from melting. When Iceboxes were first invented, the lake across the street from my house used to have large chunks of ice taken from it and stored in sawdust and warehouses for sale throughout the year. One good-sized chunk, when stored in sawdust, would last through until the lake froze over again.
BTW, your teacher's wrong about the longest that they've been able to keep Ice from melting. When Iceboxes were first invented, the lake across the street from my house used to have large chunks of ice taken from it and stored in sawdust and warehouses for sale throughout the year. One good-sized chunk, when stored in sawdust, would last through until the lake froze over again.
- 12,993
- USA! USA!
for sure.Why would you listen to anyone but Famine? All these other people have no idea what they're talking about. Especially Jspec.
- 5,842
- Forgotten Wing
Jspec is a she? I never knew that...
We're talking before the days of refridgerated railroad cars. And we're talking New England temperatures; so ranging from -10 to around 100. The thing is that the sawdust prevented them from starting to melt somehow (according to my history and science teachers). Maybe they're messed up in the head, but I believe them...
We're talking before the days of refridgerated railroad cars. And we're talking New England temperatures; so ranging from -10 to around 100. The thing is that the sawdust prevented them from starting to melt somehow (according to my history and science teachers). Maybe they're messed up in the head, but I believe them...
- 1,785
-10 to 100 WOW that is SOO damn narrow of a gauge. So your saying see how long you can make a ice cube from melting in sub-zero temperatures...ok ill stick it in a show box in mid January on my front step and it wont thaw out until march.
If there is such a record i want to now the exact condition, (time of month, temperature, place) And does it stop when the ice cube is completly turned to water, or when the first drop melts off it. What a dumbass record this is!!
If there is such a record i want to now the exact condition, (time of month, temperature, place) And does it stop when the ice cube is completly turned to water, or when the first drop melts off it. What a dumbass record this is!!
- 1,785
I forgot people cant note sarcasim over the internet.....plus..about your January thaw....well I never said anything about your january thaw.....as you can see I specifically said my front steps, Implying that if I went for the record it would last longer then if you did, and thats the reason why i want to know the qualifications for this stupid record.
