geospyder wrote:After doing some reading I think I'm going to use the space blanket to line the inside of the cooler.
GreyCoyote wrote:A disenting opinion: bbadger hit the nail on the head regarding conduction being the dominate heat transfer mechanism,but he didnt take it far enough. Conduction gets the heat into the cooler, but it has to be there in the first place. Block it from the surface of the cooler and there isnt anything to conduct. The paradigm is this: the "cold" doesnt "leak out". Instead, the heat leaks in. This is not a distinction without a difference.
We did an experiment a few years ago. Two Coleman coolers placed next to each other. Both contained 80 lbs of ice and equal drinks. We put one under a silver tarp, and the other was exposed. Both were placed on a sheet of R-panel ala monkey hut materials. After 5 days, the one exposed was completely awash and devoid of ice. The one covered by the tarp still had quite a bit of ice. Identical coolers.
Canoe wrote:[*] Having the cooler up on 2x4s is very good, as it eliminates the ground as a heat source for conducting through the bottom of the cooler. As your cooler will be under a table, I'd guess you'll be sliding them out on the 2x4s to gain easy access. Sliding on the 2x4s will damage any radiant barrier, so get a cheap plastic tray from the dollar store and use the aluminum foil tape to secure the tray to the bottom of the cooler/radiant-barrier combo.
Store all foods, beverages, serving containers, equipment and ice off the ground a minimum of 6 inches.
Canoe wrote:Shade & blankets are the tried & true 'old school' for getting better performance from your cooler on-playa. But others are getting even more benefit.
For those coming for the first time or those looking for further improvement, the rough hierarchy of beneficial things includes:
- not in your solar-oven vehicle
- in the shade
- make sure cooler seals when you close it
- off the ground
- (even in the shade or inside a hexayurt; yes the ground is cooler than the air, but it's hotter than the cooler's contents so its still a source of heat to conduct through to the inside)
- preferably with insulation under it, to keep hot air from flowing under it
- added insulation (blankets, cooler inside cooler, foam-board, bubble-wrap) to keep the hot air away
- radiant barrier to reflect heat away
Then through the threads there's advice on how to manage cooler access through the week. As every time you open it, you're exposing the contents to hot air. So a single cooler, multiple coolers (food vs. drinks, etc.), how to package the food to keep the food clean/good and any ice-melt water uncontaminated, use only potable water for making ice-cubes, cooler-packs vs. ice vs. dry ice, etc.. As Trilobye said, search through the threads.
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