is sound. In fact, most large buildings in the USA are cooled by blowing air across coils that have cold water circulating through them. Using water that is chilled naturally is far more efficient than using refrigeration
As usual, the devil lies in the details. Since this is a simple device, air and water flow rates are constant. Therefore, the amount of cooling
effect is determined by the temperature difference of the air and water. The greater the difference, the more cooling effect. Is it enough for your particular boat? I'd guess that for myself...where I anchor
, moor, or tie up, the water is not cool enough.
The pump's amp draw is minimal since there is a column of water pushing down the same height as the column of water being pulled up. The fan's amp draw is low too, just 134 cfm and minimal obstruction. The amount of condensate would depend on the relative humidity of the air inside your boat and how cool the device will make it. This is no different than a refrigeration
cycle machine, except that the machine can almost always get cold enough to produce condensate.
Lacking engineering performance data, the efficacy of the Cabin Cooler will need to be transmitted by anecdotal word-of-mouth, as Rusty requested. If the Cabin Cooler people would like me to test one and spread the word, I would be glad to install a free sample in my boat.