Coca Cola uses the sun to cool drinks
In the town of Aipir, Colombia, the temperature can often get as high as 45ºC (113ºF), yet few of the residents have a reliable source of electricity. So, pulling an ice-cold beverage out of the fridge isn't really an option. Coca Cola and the Leo Burnett Colombia advertising agency therefore devised a "Bio Cooler" for the town – it reportedly chills cans of Coke, without using electricity.
The cooler was developed in collaboration with the International Physics Centre in Bogota, and is described solely in a short video released by Leo Burnett. It reportedly works by two methods ...
First, a compartment in the top of the cooler contains plants and soil, while the cans of Coke sit in a chamber below. When the plants are watered and much of that water subsequently evaporates, it has a cooling effect on the chamber.
Second, a mirror in the cooler focuses heat from the sun, which is somehow used to convert an unnamed gas to a liquid state, creating a cooling effect as that liquid is circulated around the Coke chamber. This could conceivably be something like a thermal-powered version of the CryoEnergy System, in which energy is stored by converting ambient-temperature gaseous air into cold liquid air.
Whatever's going on, you can see the Coca Cola Bio Cooler in use, in the video below.
Source: Leo Burnett Colombia (Vimeo) via Fast Company
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Who needs essentials for life in a hard world when you have Coca Cola..
Brazen AND culturally insensitive.
If it can keep cans of Coca Cola cool, it could possibly be able to keep food cold too. Perhaps have food in can shaped containers that are stored in it like the cans of beverage?
While it is true that sugary beverages are made by Coca Cola (and a whole bunch of other companies), they also make Dasani, bottled water and other non-carbonated beverages.
...for about 15 minutes.
An absorption cooler, like propane R/V coolers, could to the same thing using focused sunlight as the heat source. The tech was developed in 1935. The only new twist is using evacuated solar tubes for the input heat source.
Propane powered fridges have been around a long time, so using a new heat source is a good idea, building off a proven product. Not a lot that can go wrong with it, simple to operate, as for the water, is is not likely to be potable water (drinking) anyways, and will lower the starting temp. ( though it would make sense to recycle it with a solar powered pump. Places like California, use %90 recycled/ filtered water in all commercial car-washes. It is not hard to do.)