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Last year I had two coolers, one with dry ice and frozen water bottles and the second with frozen water bottles and food/drinks. I think I will be going with 3 coolers this year as you had since there will be more than just two of us in my crew this year. Must have more room for beer.
Post by questionablesanity on Jun 5, 2009 12:21:41 GMT -5
I just called a local company who sells dry ice and they claim that 20 lbs will only last 72 hours. I don't see how this is accurate, but just thought I'd post it.
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Huh. I would at least think that the size/type of cooler you have would make a difference. I plan on putting some regular ice on top of my dry ice, hopefully that, in addition to my "5 day" cooler will make it last a little longer than three days.
A question for those who have done this before: Roughly how much (weight) dry ice should I purchase per cooler? I don't want so much that I can't fit very many drinks in it obviously, but enough to keep it relatively cold for a few days.
I just called a local company who sells dry ice and they claim that 20 lbs will only last 72 hours. I don't see how this is accurate, but just thought I'd post it.
Maybe the guy is just trying to be a salesmen and sell a little extra? I don't know a lot about dry ice so don't trust me......but can anyone else shed light?
Also I posted this in a pigsah tip thread but here is more appropriate. I need some advice/suggestions:
So we'll be going to Knoxville Phish show but will try to get Dry Ice the day before.......what should we do about it being in the car during the show? We'll probably have the cooler in the trunk. Should we move it to the back seat and crack a window? Any suggestions?
I don't know for absolute certain, but I'd be willing to bet that the trunk is going to be cooler than the backseat even if the windows were all the way down.
Well I do not use dry ice. What I have found in the past what works is to ice all the drinks (water, Gatorade, beer) days before going. By the end of this weekend I will have the coolers full with drink and ice. Then I will top off the cooler with ice on Thursday morning before entering the festival. This has worked in the past at Bonnaroo and NASCAR events. I think the key is to get everything (cooler & drink) cold well before going.
Heres a couple of things. You really dont want drinks in a cooler with dry ice, they will freeze. Also you dont want regular ice with your dry ice, it wont make it last longer it will make it last less time actually. The dry ice is colder than the regular ice so its not helping and the liquid from the regular ice will cause your dry ice to melt much faster.
As for how long it will last, that depends on what kind. The guy you talked to I assume has pellets which dont last nearly as long but are usually a little cheaper. The blocks last the longest but also take up the most room.
I don't know for absolute certain, but I'd be willing to bet that the trunk is going to be cooler than the backseat even if the windows were all the way down.
Yea that's why I wanted to keep it in the trunk. My only concern was people talking about the gas and how it should be in a ventilated area and stuff. If it would be fine in my trunk for a few hours then that's what I'll do.
Post by sthomas1312 on Jun 6, 2009 15:21:50 GMT -5
just a quick tip for anyone, I got some car washing towels from Advance Autoparts, and 2 of them will perfectly line the bottom of a large Igloo 5 day cooler for dry ice. They are thin towels, and won' take up item room in the cooler, but thick enough to protect the bottom of the cooler from direct exposure to dry ice.
Post by questionablesanity on Jun 6, 2009 16:14:39 GMT -5
The lady I talked to was def not a salesperson, just the operator of the company and she was going by a chart, so she says. I'm not worried about it too much. I'm just going to layer the bottom with the dry ice blocks in a trash bag, frozen water, then food/drink, with a little regular ice. I do not see how dry ice can make regular ice melt faster. Seems to defy the laws of physics. Everyone else on inforoo has had no problem with it so I'm gonna go with the experienced. Actually a 5 day cooler should hold regular ice for 5 days without problem.
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Post by lyricaldedd on Jun 6, 2009 23:57:27 GMT -5
I have decided that I am going to go to Kroger with my cooler and buy as much as it takes to line the bottom. And lay frozen water bottles on top. Hopefully that will be enough.
I have decided that I am going to go to Kroger with my cooler and buy as much as it takes to line the bottom. And lay frozen water bottles on top. Hopefully that will be enough.
that's exactly what I am doing. Dry ice to cover the cooler then 24 frozen water bottles on top, then everything else.
The lady I talked to was def not a salesperson, just the operator of the company and she was going by a chart, so she says. I'm not worried about it too much. I'm just going to layer the bottom with the dry ice blocks in a trash bag, frozen water, then food/drink, with a little regular ice. I do not see how dry ice can make regular ice melt faster. Seems to defy the laws of physics. Everyone else on inforoo has had no problem with it so I'm gonna go with the experienced. Actually a 5 day cooler should hold regular ice for 5 days without problem.
No no no the regular ice will make the dry ice evaporate faster.
The lady I talked to was def not a salesperson, just the operator of the company and she was going by a chart, so she says. I'm not worried about it too much. I'm just going to layer the bottom with the dry ice blocks in a trash bag, frozen water, then food/drink, with a little regular ice. I do not see how dry ice can make regular ice melt faster. Seems to defy the laws of physics. Everyone else on inforoo has had no problem with it so I'm gonna go with the experienced. Actually a 5 day cooler should hold regular ice for 5 days without problem.
No no no the regular ice will make the dry ice evaporate faster.
And the regular ice will melt faster without dry ice?
Standard Ice is much warmer than dry ice, so actually like getfresh said ice, will melt dry ice. Also ITM, dont worry about your trunk unless it is airtight you wont be hurting anything. I usually take 2 inch slabs about 30 pounds worth, they last usually until sometime sunday afternoon. The best part though is to make sure you put a medly of cherries/strawberries/oranges/apples, and any other fruit you like. There is not an easier, nicer Bonnaroo treat than a frozen carbonated cherry IMO.
A Thieve's Parade 2/24 Conspirator 2/26 Kevin Smith 3/11 Keller 3/17 Papadosio 3/18 JJ Grey 3/25 Bela Fleck/Edgar Meyer 3/26 Toubab Krewe 3/27 O'Death 4/11 Budos Band 4/22 EOTO 4/28 Summer Camp 5/6-29 All Good
Cant say for sure. But the liquid from the regular ice will make the dry ice evaporate much quicker. Kinda like an ice bomb without the bomb part.
Still....saying that you shouldn't buy regular ice because it melts the dry ice faster doesn't make any sense.
Say for example: -You take a glass of normal tap water. You want to make the water colder, so you put ice in the water. Now yes the water does melt the ice because it's warmer than the ice itself, but the ice cools down the surrounding water and makes it colder than it would have been without the ice in the first place.
Now if we apply that same logic to this situation, than I would argue that regular ice won't melt as quickly(the whole point to having dry ice) because it's surrounded by colder dry ice rather than having only regular ice sitting in the cooler.
Don't know for sure, I'm not a dry ice expert and I've done 0 research, but it seems like simple science?
Has anyone done this experiment? Take 2 coolers one with regular ice, and one with dry ice on the bottom and regular ice over top of it and see which cooler turns to water quickest?
And if you're advocating using only dry ice, wouldn't that freeze everything? You need that barrier of regular ice.
nope.... when you pour water on dry ice you see it "smoke" or fog up..... this is the ice turning directly into gaseous form.... when you open your cooler over and over, the regular ice melts into water and drops onto the dry ice... this makes it evaporate.... just wrap the dry ice in newspaper and then put water bottles on top of it.
I'm definitely going to try this out this year! It seems from what everyone is saying that having the dry ice with a bunch of frozen waterbottles will work out best. I'll Just use that cooler to keep my frozen foods in and cycle out water-bottles everyday, so I have a steady supply of frozen bottles to keep the other coolers dry.
Post by pondo ROCKS on Jun 7, 2009 20:27:53 GMT -5
my advice...Freeze your bottles of water in advance. Put them in your cooler to act as a collant along with your ice or dry ice...they will eventually unfreeze and you have cold water still.
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The dry ice should not be allowed to "breathe," this is called sublimation and is the conversion of dry CO2 to gaseous CO2, and will result in faster loss of dry ice, as well as release of more gas in to your car. The danger from the expanding gas is minimal if it is really slow and your dry ice stays a solid, the cooler will help with this. Anything less than 5kg isn't much of a problem in a cooler, but yes, your car should be ventilated.
^^Placing regular (H2O) ice on top of the dry ice will cause a layer of wet ice to form around the dry ice, and will lead to greater heat exchange to the dry ice (this is the same principle that will cause an ice-cube to rapidly melt in a stream of water) and faster sublimation as stated correctly by phuture5 above
The newspaper idea is a good one, and I would also recommend using a layer of cloth to catch the drips from the wet ice/condensation for the water bottles.
The place I'm buying my dry ice from says 5lb/24 hours. I'm buying 25lb. They wrap the dry ice in heavy paper when they sell it to you. They charge 75c/lb, is that good?
The place I'm buying my dry ice from says 5lb/24 hours. I'm buying 25lb. They wrap the dry ice in heavy paper when they sell it to you. They charge 75c/lb, is that good?
The cheapest that I could find it in Murfreesboro is .99/lb. I would say that you are getting a good deal. Also, crunchies for the pound-hours ratio.
Standard Ice is much warmer than dry ice, so actually like getfresh said ice, will melt dry ice. Also ITM, dont worry about your trunk unless it is airtight you wont be hurting anything. I usually take 2 inch slabs about 30 pounds worth, they last usually until sometime sunday afternoon. The best part though is to make sure you put a medly of cherries/strawberries/oranges/apples, and any other fruit you like. There is not an easier, nicer Bonnaroo treat than a frozen carbonated cherry IMO.
LOL - that's why we always put our fruit cups in the cooler with the dry ice - frozen carbonated peaches -
