The debate rages on. Which is best: air cooling or water cooling for marine refrigeration systems?

A refrigeration system doesn’t “make cold”, it removes heat from one area and transfers it to another. There is actually no such thing as “cold”, just heat at different temperatures: cold heat, warm heat, hot heat, etc.

In our small marine refrigeration systems, this heat transfer is accomplished using a compressor and a refrigerant to collect heat from inside an insulated space and disperse it somewhere else via the magic of latent heat. The evaporator is the “heat collector” inside the insulated box while the condenser is the component that disperses that heat elsewhere. While the evaporator is specific for the size and configuration for the application, there are choices to be made regarding condensers and the medium they disperse the heat into.

But first, let's watch a demonstration of how a Frigoboat Keel Cooler System works in extreme tropical water conditions. Then we will discuss how this can be.