Those results make sense, I suppose. Ice takes a lot of energy from its surroundings to change phases, the ice-filled plastic cube is held back by the plastic interfering with the thermal transfer, slowing down the process. As for marble/stainless, they dont absorb as much heat because they don't go through the phase change. One other point is that unless you fill a glass with marble cubes, you will have to wait to enjoy a cool sip, because a cube sinks to the bottom. An ice cube floats and cools the drink on the top, which is where you're taking a sip from.
You should of gave it a quick stir in between minutes to equally distribute the cold water vs the warmer water, because: what if the thermometer is measuring the temperature of water closest to where on the thermometer is picking up readings and that water is closer to the ice cube. What if that one spot was a cold spot because of the ice cube and in comparison, the rest and majority of the water was warmer???
Assuming that it's water inside the plastic cubes, those could be the most efficient reusable option. Googling a bit I've found that heat capacity of ice water is 2093 J/(kg-K) and stainless steel 304 is 502.416 J/(kg-K), so 4 times as much. If I'm not mistaken, they need 4 times as much energy to be "taken" from them than solid block of steel the same size. This could explain why some stainless steel ice cubes are actually filled with some liquid.
@@pandaengineering Omg thank you for your homework. I am in refrigeration and never consider the energy removal between water(ice) and stainless steel. I just assumed stainless steel had a greater storage capacity. But I did know that stainless steel had a far less conductivity the water. I should have put that together.
There also might be other factors (the heat capacity changes with temperatures and solid/liquid state), but all I know for sure is that water takes *a lot* of energy to boil as compared to heating up other substances. I hope I figured this out correctly :)
Those results make sense, I suppose. Ice takes a lot of energy from its surroundings to change phases, the ice-filled plastic cube is held back by the plastic interfering with the thermal transfer, slowing down the process. As for marble/stainless, they dont absorb as much heat because they don't go through the phase change.
One other point is that unless you fill a glass with marble cubes, you will have to wait to enjoy a cool sip, because a cube sinks to the bottom. An ice cube floats and cools the drink on the top, which is where you're taking a sip from.
older video, but still extremely useful. I'm glad you did a duration test
Thanks for this helpful comparative test.
Is there a substance that makes it cooler than ice would but is tasteless and non toxic of course?
When you use the plastic cubes, does it give the liquid a different taste?
Not really, even alcoholic drinks don't get any taste. I think it's depending on the plastic they use, but after first thorough wash these are fine.
You should of gave it a quick stir in between minutes to equally distribute the cold water vs the warmer water, because:
what if the thermometer is measuring the temperature of water closest to where on the thermometer is picking up readings and that water is closer to the ice cube.
What if that one spot was a cold spot because of the ice cube and in comparison, the rest and majority of the water was warmer???
Lol your ice glads is good
What about Stainless Steel? They would remove more BTU's than plastic or rock, no?
Assuming that it's water inside the plastic cubes, those could be the most efficient reusable option. Googling a bit I've found that heat capacity of ice water is 2093 J/(kg-K) and stainless steel 304 is 502.416 J/(kg-K), so 4 times as much. If I'm not mistaken, they need 4 times as much energy to be "taken" from them than solid block of steel the same size. This could explain why some stainless steel ice cubes are actually filled with some liquid.
@@pandaengineering Omg thank you for your homework. I am in refrigeration and never consider the energy removal between water(ice) and stainless steel. I just assumed stainless steel had a greater storage capacity. But I did know that stainless steel had a far less conductivity the water. I should have put that together.
There also might be other factors (the heat capacity changes with temperatures and solid/liquid state), but all I know for sure is that water takes *a lot* of energy to boil as compared to heating up other substances. I hope I figured this out correctly :)
I don’t know how to make that