From outback marine website:
Using familiar Danfoss DC compressors, Veco have developed condensers sets that are efficient to run and are built to last. With the best gear
and in house enclosure manufacturing capability, Outback Marine can supply a solution ranging from a DIY component kit to a fully integrated refrigeration
A recent development was an entirely new marine refrigeration system that would use otherwise wasted energy to heat the vessel’s hot water system. Unlike conventional water cooled marine refrigeration systems which pump condenser heat overboard, the otherwise wasted energy is recovered to heat the boat’s on-board hot water system. The system will heat water to around 40º C, which is considered sufficient for most showering requirements.
A digital control panel
is supplied to supervise refrigeration and hot water temperatures. This innovation by itself does not at first look like a big deal, but considering that with a solar
panel array, the system eliminates the need for an on-board 240 volt generator
or LPG. The benefits can be outstanding