Agriv8
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| posted on 11/8/10 at 07:46 AM |
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OT Frozen contents in 12 Volt cooler Box
Right I cant sus this - so thrown to the locust builders.
I have a 12v / 240v cooler box to tranport frozen food for a trip to france it will take 2 days to get to our destination.
So the cooler cools to 20 bellow ambient temp so lets say the ambient tempreature is 20 and the food inside is -5 is activating the cooling going to
assist in keeping the food frozen longer or activly work against it .
the box is one of these :-
http://www.outwell.dk/Furniture.aspx?b=Outwell&bid=2&lid=1&l=en-GB&ProductId=1840&pid=9&CatId=523
PS even if the food defrost over the 2 day journey thats fine as it is all uncooked meats so no chance of cross contamination.
I just cant work out how these things work so an explanation of that may give me the answer I desire.
Thanks & regards
Agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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cliftyhanger
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| posted on 11/8/10 at 07:49 AM |
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It means the temp inside the box will (should!) be zero. So it will defrost slower than left in a coolbox (I am assuming they dont circulate air
inside the coolbox, as that may speed up defrosting....)
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cliftyhanger
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| posted on 11/8/10 at 07:50 AM |
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should add, fill up any exrta space with cartons of frozen fruit juice and bubblewrap. It all helps.
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David Jenkins
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| posted on 11/8/10 at 07:54 AM |
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They do have supermarkets in France, you know...
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Dave Ashurst
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| posted on 11/8/10 at 07:55 AM |
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Halfway down the linked page is probably the answer you're looking for...
How do absorption refrigerators work?: a concentrated ammonia solution is heated in a
hermetic system and driven off as vapour. The pressurised ammonia gas is then liquefied in a condenser and supplied with hydrogen. As a result, it
evaporates and, in the process, extracts heat from the food storage space. The ammonia gas then enters the absorber where it is reabsorbed in a weak
solution of ammonia. Finally, the saturated solution flows back to the boiler where the whole cycle starts again. The boiler can be powered by either
gas, 12 or 230 volts.
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Dave Ashurst
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| posted on 11/8/10 at 07:56 AM |
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.... or was that the question?
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Dave Ashurst
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| posted on 11/8/10 at 07:57 AM |
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quote:
Originally posted by David Jenkins
They do have supermarkets in France, you know...
snigger snigger 
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mangogrooveworkshop
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| posted on 11/8/10 at 07:59 AM |
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The customs will take meat off of you if they search. Mad cow maggie saw to this making johny foriegner rather nervous about the movement of such
stuff.....
But why take crappy meat from tescos to a country that has fantastic fresh food.
Just like I cant understand why scotland imports water from the south of france
I always try whats local when traveling.
It adds to the experiance. Besides theres a lidls in almost every village in europe if you get really hungry
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cliftyhanger
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| posted on 11/8/10 at 08:03 AM |
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But the French don't do (proper) bacon
Apart from that, teabags and maybe baked beans.......and some decent beer, although their jenlain ambree is very good.
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Nick Skidmore
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| posted on 11/8/10 at 08:13 AM |
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I think its a peltier system. This is a blend of semiconductor type materials that when polarised one way will cool and when polarised the opposite
will warm. They use about 4A if I remember correctly so can flatten batteries quite quickly.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Dave Ashurst
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| posted on 11/8/10 at 08:39 AM |
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quote:
Originally posted by Nick Skidmore
I think its a peltier system. This is a blend of semiconductor type materials that when polarised one way will cool and when polarised the opposite
will warm. They use about 4A if I remember correctly so can flatten batteries quite quickly.
Yes, I think you're right, its more likely to be a solid state system.
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02GF74
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| posted on 11/8/10 at 09:14 AM |
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has to be peltier ..... not very efficient or effective but expensive from what I recall on land rover forum.
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Mark Allanson
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| posted on 11/8/10 at 09:17 AM |
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quote:
Originally posted by mangogrooveworkshop
The customs will take meat off of you if they search. Mad cow maggie saw to this making johny foriegner rather nervous about the movement of such
stuff.....
But why take crappy meat from tescos to a country that has fantastic fresh food.
Just like I cant understand why scotland imports water from the south of france
I always try whats local when traveling.
It adds to the experiance. Besides theres a lidls in almost every village in europe if you get really hungry
When was the last time you saw a scotsman drinking water!
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Agriv8
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| posted on 11/8/10 at 09:29 AM |
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Thanks Chaps I will research Pelter system seemed to work with some items left in over night which it chilled niceley. The box cost aprox £40 from go
camping.
the meat was from a 'farmer freind' who slaugters some of prize calf bulls and sells the meat to freinds and familly. This is meat that is
bread for taste and texture not what 'Looks Good' on the tesco slab we will buy fresh while over there but beef I will be taking
is bread for specialist slauter houses rather than suppermarkets .
thanks for the heads up re customs The Box will be Covered in the boot and unplugged while the engine not running.
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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David Jenkins
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| posted on 11/8/10 at 09:09 PM |
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You could also get some of those plastic coolbox 'bricks' - shove them in the home freezer until they're well frozen, then pack them
around the meat in the car's fridge. They 'keep their cold' for a surprisingly long time (i.e. it takes a lot of heat energy to
thaw them).
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