Serpa4, As you can see from the responses so far about the best refrigeration
for your boat, 98% will like the system they have. You need to remember there are no two boats the same and refrigeration
desired temperatures for each persons boat are different. Also be careful about quoted amp-hrs per day no one can quantify a figure of amp-hrs for your boat. It is true that the new variable speed Danfoss BD compressors are more efficient in small boxes if they can be operated at slow Coefficient Of Performance speeds.
Before you can select a refrigeration brand you need to determine the right size Danfoss BD compressor
and the desired temperature you would like to maintain inside the box. Chesapeake waters in summer are warm for that latitude and box’s insulation
dry R value on production boats is always in question. I would gamble on a Danfoss BD 35 compressor
with its speed set to run at a speed that matches evaporator’s Btu capacity.
A chamber evaporator 10x 11x 5 or 6 inches would be a good unit if it will fit through lid opening.
I would go for price
avoiding all gadgets that do not improve a systems performance in your application like: electrical
thermostats, automatic speed controls, or even holding plates unless boat is equipped with alternative energy solar
The condensing unit should have a shroud
around fan to insure all air from fan is moved through condenser coil. Air flow after condenser coil should pass over compressor to supplement compressor cooling
, this is one reason why water
cooled condensers are a bad idea on BD compressors.
With maybe 100 icebox
conversion options to choose from take tine to find one that fits your boating
needs. The suggested post to look at Nova Kool might be what you are looking for without the negatives of; Adler Barbour, Frigoboat, Technautics, Isotherm
and maybe SeaFrost in your design concept