Originally Posted by Maka
Why wouldn't a swamp cooler work?
Could be set up w 12v pump and fan ( fans? )
Might need a deeper sump to compensate for rocking and rolling.
Swamp coolers only work if the humidity is very low. While there are cruising grounds that meet that requirement, they tend to be the exception.
In a more typical cruising ground like florida
, they will do nothing.
Also we need to clarify a few variations that are being talked about
- Traditional Marine
Units: The entire unit is inside with a water pickup and discharge absorbing the heat. Condensate either goes in the bilge
to be pumped out by the bilge pump
or you can insert a veturi pump in the water line to suck up the condensate. We hated our marine unit as our bilges are otherwise dry and the venturi pump constantly clogged, so it overflowed into the bilge
- Window units: The small box units that where the entire thing sits in the window. Simplest and cheapest but least attractive. Condensate typically drips outside via gravity.
- Portable units: These units sit inside on the floor with a 4-6" diameter hose led to a window. Condensate is routed to fall on the exhaust fan where it is flung out as a fine mist in the exhaust. They come in two flavors. The single
hose, uses air from inside the cabin to cool the unit. The downside is that means hot outside air gets drawn in to replace that exhaust air. This reduces the efficency. The higher end units have two hoses, so it can pull in outside air to cool the unit meaning you don't exhaust already cooled interior
- Split Units: There are two pieces. One mounted on the exterior and one on the interior
with hoses carrying the coolant
connecting them. These are nice but they require a permanent mount for both parts
. I haven't seen one on a boat but it should be viable.