Kitchen Remodel:
One of the upgrades I'm making on the camper is installing a refrigerator in the space where there used to be an icebox. The little (1.7 cubic foot) refrigerator is a 3-way unit. As strange as it seems, the interior of the little box is cooled by means of heat. Here is an article that briefly explains the process, https://www.rvrepairclub.com/article/how-absorption-refrigeration-works/# , though it still seems pretty mysterious to me. The heat source is a propane flame, or a 110 or 12-volt current (thus 3-way). What is clear is that getting the heat away from the unit as efficiently as possible is important. A lower and upper vent utilizes convection to cause the hot air to flow out the upper vent and draw cooler air into the lower. These vents have to be properly aligned with the unit, so this is another time when interior decisions have to be made before exterior work can be completed. The little frig actually requires less cabinet space than the icebox it replaces, so I w...