Put a soda can in the freezer for too long and it will burst. So you may wonder how outdoor vending machines keep all the cans inside from exploding during the winter. Turns out those tricky vending machine engineers thought of everything.
Picture those bright, buzzing lights that make the average vending machine glow like a small sun. Those bulbs let off a lot of energy in the form of heat. As long as it doesn't get too cold, the lighting keeps the soda cans warm enough to prevent freezing.
Of course, lights alone aren't going to cut it anywhere it stays below freezing for weeks on end. That's why vending machines have heaters too, in addition to their refrigeration units.
Vending machines are also well insulated. In the summer, insulation traps cold air created by the refrigerator, while in the winter it traps the heat from the heater and the lighting.
- Photo Credit pop top image by Tammy Mobley from Fotolia.com
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