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Portable Electric Freezer Bag


Johnrocks

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Hello, I'm John.  This is my first time here. I wanted to get like a 12 can cooler bag and make it with a battery pack so that it is cooled by a compressor or something. I was wondering if you guys knew something that is small enough to fit inside the cooler bag and still leaves room for things.

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The amount of energy requiered to cool or keep from heat gain your twelve pack may need to haul an automobile battery and a compressor with corresponding evaporator and condenser coils, if not inefficient Peltier cells.

The commercial Peltier units are way more bulkier than a twelve pack in a bag,

----> https://www.aosom.com/item/outsunny-33-quart-12v-ac-dc-thermoelectric-portable-cooler-warmer-w-car-adapter-blue~C00-006.html

So you are left with chemical freeze packs as an option:

----> https://www.google.com/search?q=freeze+packs&client=ubuntu&hs=Thv&channel=fs&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiH5dCs5MjgAhXp44MKHfxFBP4Q_AUIDygC&biw=1366&bih=604

Which are 'recharged' at the home freezer and taken inside your thermal bag.

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Nope. The Peltier heat pump module cools on one side and gets hot on the other.  Inside a bag with no air circulation would be just consuming energy and warming everything.  Note the commercial units ('cooler' boxes) have a fan/vent to cool/dissipate the hot side, absolutely necessary.  And will also need to haul a car battery for it.

----> https://usa.banggood.com/TEC1-12706-Thermoelectric-Peltier-Refrigeration-Cooling-System-Kit-Cooler-Fan-p-936497.html?gmcCountry=US&currency=USD&createTmp=1&utm_source=googleshopping&utm_medium=cpc_bgcs&utm_content=zouzou&utm_campaign=pla-usg-ele-diy1-pc&cur_warehouse=CN

Last resource, dry ice in your bag.

Edited by Externet
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49 minutes ago, Johnrocks said:

What voltage does the Peltier unit use?

That depends on particular one Peltier of your choice. Typically 12 V. If you're using batteries you need to use stabilizer ("boost","step-up") (aka "voltage regulator").

49 minutes ago, Johnrocks said:

What about this if I get a bigger bag   

That's monster. It's at least 12 cm x 12 cm x 20 cm looking by size of computer fan..

12 Volts * 10 A = 120 Watts. You will have to dissipate it somehow.

 

Edited by Sensei
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