How to cool a keg?

The battle of the week involves how to cool the kegs on a rolling beverage cart.

 

ICE TUBS can be insulated, and can stay at 32 degrees for longer than a day.  They are extremely simple, but also very heavy.

PELTON MODULES have no moving parts and are much lighter than ice tubs, but they are expensive.  In no particular order I would need a controller, battery, battery box, battery charger, Pelton module, thermocouple, and I’m sure I’m missing something…

SO…Since I have a little free time while I wait for the finishing touches on motor controller version 2.0, I’m going to make both.