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Showing posts from May, 2012

More Off-Grid Refrigeration

I've previously tipped my hat towards Ammonia Absorption Refrigeration, but Thermo-electric fridges are another option for portable refrigeration, provided one is aware that they have significant limitations. The big issue is that you often get what you pay for, and "Cheap" seems to be a big factor. For example, a normal on-sale unit from Canadian Tire or Walmart will most likely have these two limitations;
First, it only cools to about 20c below the ambient air temperature and simply put, this is not good enough. Why? Well, in many summer camping situations sunny campsite or "in-car" temperatures often exceed 30c. That means the fridge temperature will exceed 10c, not good for your wife's coveted coffee-cream...ask me how I know.
Second, most cheaper units have no type of thermostat or temperature control, causing two more drawbacks: If the campsite temperature falls to 20c or below (not uncommon in eastern Canada), things will freeze. Also, with no type of …