There has been a vast improvement on these new systems - especially with the expansion device and they are far better than they use to be.

If you're in a 45 degree day its not going to keep your milk at 4 degrees.Ī compressor fridge will cool to whatever temp you set it to.Sorry Wayne I have to slightly disagree here - especially if the system is using lithium bromide or amonia, the evaporation temp (at a 40 Deg C + ambient) is still going to be in excess of minus 5 Deg C, note it only cools down to 30 degrees below ambient. If you want one as your 'base camp' fridge, running off gas, or mains, then this might be worth considering, but it does sound a little pricey for an absorption fridge. An absorption fridge draws heaps from your battery ( 8-10 amps ) continuously and for that is not very efficient. touring ) get an Engel or Waeco compressor fridge ( range from $800 to $1200 for 40 -60 litres ). Hook up a lpg cylinder to them and off you go. Not as efficient as a compressor driven system - they take a while to pull down - but if you are out in the bush with no power they are good. Its the same - almost as any fridge - but you are replacing the compressor with a heat source to raise the temp - thus the pressure. The system works - the same way as a 2 or three way caravan fridge - the heat source - gas or mains electricity (or 12v if a 3 way) heats an area - where the amonia of LbR boils out of the water and rises, as it rises it enters a condenser secion - cooled by ambient air, this conenses the relatively high pressure vapour into a high presure liquid which - due to the pressure - is then squeezed through an orifice/measuring device (tx valve equiv) where the high pressure liquid is then alowed to expand into the evaporator - as the pressure drops the temp drops - and you have cooling. Yes me old mate - basically it works on the absorbtion process - either using amonia or lithium bromide mixed with water.

Primus 3 way fridge manuals