Hammer wrote:Hammer wrote:
use block ice instead of crushed ice as much as possible, and regularly drain the water.
This part I disagree with. The main thing that matters is the weight of the ice. 20 pounds of cubes or crushed will have the same cooling capability as 20 pounds of block, but with the added benefit of being able to push around and take up volume around foods instead of just a lump at the top.
Similarly, draining the water is unnecessary and likely counter-productive.
Crushed ice will fill voids and that's valuable, but there's more to it than that… There’s a direct trade off between how cold you can keep something and how long you can keep it cold with a given quantity of ice. If your objective is to keep things reasonably cool for a long time, block ice and draining water pay big dividends.
Yes, twenty pounds of crushed ice has the same cooling energy as 20 pounds of cubed ice, just like twenty pounds of wood shavings has the same energy as a twenty pound log. The question is at what rate the ice or the wood gives up its energy.
A twenty pound log will burn in a stove much longer than twenty pounds of wood shavings because while the net amount of energy released is the same, the rate at which it’s released is not. Ice is no different.
Crushed ice has many times the surface area of block ice, so it releases its energy to the surrounding environment much faster. It brings the contents of the cooler to a lower temperature more quickly than block ice, but it does so at the expense of longevity.
Crushed ice gives you 33 degree beer for 12 hours where as the same weight of block ice gives you 45 degree beer for three days…for illustrative purposes only of course.
Draining water from the cooler seems counterproductive because it releases thermal ballast, but it is extremely important if you want your ice to last as long as possible. The reason is that the water acts as a conduit that transfers the cooling energy of the ice to the walls of the cooler, where it is transferred to the atmosphere. If the cooler walls were a perfect insulator it wouldn’t matter as much, but they’re not…not even close.
Now that can of Schlitz sitting in melted ice water is going to be colder than a can of Schlitz sitting a foot away from a dry block of ice…once again it comes down to how cold do you want it verses how long do you want it to stay cold.
Hammer wrote:Crushed ice will fill voids and that's valuable, but there's more to it than that… There’s a direct trade off between how cold you can keep something and how long you can keep it cold with a given quantity of ice. If your objective is to keep things reasonably cool for a long time, block ice and draining water pay big dividends.
Hammer wrote:Draining water from the cooler seems counterproductive because it releases thermal ballast, but it is extremely important if you want your ice to last as long as possible. The reason is that the water acts as a conduit that transfers the cooling energy of the ice to the walls of the cooler, where it is transferred to the atmosphere. If the cooler walls were a perfect insulator it wouldn’t matter as much, but they’re not…not even close.

iceman wrote:I pack the ao soft cooler with all my clothes and underwear and shit...
wannabe wrote:MTV
""considered "Bear Proof" by the Interagency Grizzly Bear Research Team.""
Are they the ones who count the bells and whistles?![]()
Sorry, couldn't pass it up.


iceman wrote:note to Whee.....I fart in your general direction....
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