Is such a small heat exchanger coil really large enough to cool the refrigeration system?
Yes – in fact, even if only a piece of tubing the same length as that of the coil had been placed in the water outside the hull, it would still work! The heat, however, would then only be transported away by the “thermosiphon effect” of the surrounding water. In the skin fitting heat exchanger of the Isotherm SP, the water flow is also forced away by the self pumping action resulting in an appreciably higher efficiency level.
