Dry ice is not the easiest thing to acquire and most time has to be sawed into usable size pieces. Then for sure you should experiment on placement. Otherwise, you will be looking for a microwave to thaw out food or drinks.
It would be great if somebody could make a low power, small microwave, but they don't seem to exist. Some of the peltier coolers, like my Koolatron, can be used to heat(switch the polarity) but I've never tried it. I think they might get up to about 140'Dry ice is not the easiest thing to acquire and most time has to be sawed into usable size pieces. Then for sure you should experiment on placement. Otherwise, you will be looking for a microwave to thaw out food or drinks.
Per Koolatron, all their 12V coolers are thermoelectric. That means no compressor. And those numbers you quoted for power consumption are for a thermoelectric cooler. Can you provide us with model number?These new compressors are designed for use in vehicles and so a very low current draw.
People sometimes have trouble running the compressor fridge on 12v but they work well with the transformer and inverter connected to a battery. The compressor fridge will shut down if the battery voltage sags but the inverter seems to insulate it.
My Koolatron manual says it draws 4.5amps at 12vdc. Most of the other peltier coolers I've seen the specs on say 3.5 amps at 12v. It is a constant draw because they don't have thermostats, while the compressor fridge is computerized and has a thermostat.
I don't have a way to easily measure 12v amps but when I use the transformer the compressor fridge uses .50 amps while the peltier uses .90 amps on 110vac. They are both switcher type 110v - 12v power adapters.
B07 Travel Tote is all it says on the manual. It is thermoelectric (peltier).Per Koolatron, all their 12V coolers are thermoelectric. That means no compressor. And those numbers you quoted for power consumption are for a thermoelectric cooler. Can you provide us with model number?
What about draining the melted ice? We have a soft-sided cooler, which is nice and folds up, but there's no drain hole, so when the ice melts, you have to take everything out and dump it somehwere. Not too many "somewheres" on a moving train or a large urban station. I use it with chill packs, which are fine for a one-day picnic, but on a multi-day trip need to be refrozen somewhere.Isn't ice always available upon request? Why couldn't the cooler in question be restocked periodically?
That's cool. Is it 'official' policy, though?If you're in a Western sleeper, in my experience whatever you can haul to your room and fit there is fine. I've lugged 200 lbs of gear on various trips and nobody said a thing.
How to Use Dry Ice in a CoolerThanks everyone for all of the suggestions. I did take me_little_me's suggestion and tested it out yesterday and today. I went to praxair who sells dry ice. Told the fellow what I was trying to do and he gave me 10 lbs free (which filled my small cooler) to test it out. With about 5 lbs of dry ice in the cooler I can get 2 of the BodyIce in there (with 10 lbs there was no room for the BodyIce packs). It cooled very well with a small towel between the ice and the BodyIce for the one closest to the dry ice. The towel was necessary, else the BodyIce nearest the dry ice froze solid. It has to remain pliable for comfort reasons. The one on top was not cool enough for me to use. So, I took to sitting on one while the other was cooling. It worked fine for a little less than 24 hours before the dry ice was exhausted. A good portion of that was during the night when I was not using any at all. I can sit on the BodyIce for an hour or two before it needs to be cooled again, which I think is the problem. Those 'warm' BodyIce are taking a lot to cool. It's just not lasting long enough I'm afraid. And I don't know how I could replenish the dry ice during the trip. I can't use 2 coolers, they're just too heavy and I wouldn't be able to tote any luggage. This dry ice is not light. It is significantly heavier than the equivalent volume of frozen water, so a bigger cooler is out of the question, unless I also bring a dolly to move it around. I do have a portable cooler in my car which can plug into a wall socket or a lighter. But it is very heavy. It's literally a small refrigerator with a condensor and motor, which is why it's so heavy. Works great in the car but you don't want to tote this thing around for any distance. Think I'm going to have to fly unfortunately. But I really appreciate all the help suggester here. Cheers!