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Old 08-11-2009   #1
 
penguin's Avatar
 
Tahoe City, California
Join Date: Apr 2009
Posts: 57
Dry ice planning - should I use block too?

Hey all,

Taking off for the MF Salmon tomorrow for seven days. We've pre-made all of our food and frozen it in flat-packed gallon bags.

We've got an 80-quart Engel cooler and I'd like to keep frozen food frozen for as long as possible. Last time on Deso about 40 lbs of dry ice lasted around 3-4 days. I have a couple of questions:

(a) Any danger in keeping the cooler totally closed, without a vent for letting the dry ice escape? I've read that explosions can occur, no?

(b) Should I use block ice in addition to the dry ice?

Thanks,

Penguin

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Old 08-11-2009   #2
 
Cisco, Utah
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plenty of ice threads if you search... Dry ice on top will keep it frozen, including any wet block ice... Never heard of coolers exploding but would love to see it!
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Old 08-11-2009   #3
 
Pugetopolis, Washington
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If ya had a Yeti you wouldn't have to worry about it.

You can milk 7days at this time of year? Are you launching from Boundary? Post pics....
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Old 08-11-2009   #4
 
Durango, Colorado
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Dry ice and a little water in a tightly sealy 2-liter bottle will build up pressure and go BOOM!!! Stay clear and be careful if you choose to use up all your solid CO2 on the first night (In a cooler the gas will find a way to escape and there is no risk of pressure build up causing explosion). Freezing all your food for prior will make the dry ice last much longer.

Block ice will melt and cause your dry ice to bubble and dissapear. Try freezing orange juice jugs, they thaw without wetting your dry ice and juice is nice on a long river trip.

Have fun
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Old 08-11-2009   #5
 
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Erie, Colorado
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frozen milk jugs of ice trump the store ice blocks - if you have room in your freezer to make several a few days before the trip

40 lbs of dry ice must have cost a fortune! i'd use 1/2 or a 1/4 of that with your ice jugs - no vent needed
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