Let he who hath never sinned break his blinker at the first roundabout.......I have set off forgetting to knock the gas off on my preflight checks, dog was sat on it and a bad idea to wake him up !!.
Fact of the matter is there are so many variables. SO many different appliances within fridge world , same with regulators ,no hard and fast rules.
When people talk of crash proof regulators etc...what they are actually saying is they have and not everyone does have a regulator with a under pressure shut off valve. (UPSO).
The idea is in the event of a pipe rupture or leak the regulator closes shutting gasflow. What i am not sure of is any of the manufacturers doing this so gas can be used on the move.
Some systems are designed to be used on the move and will have an upso fitted different design brief ?
12 volt thats a can of worms too, it maintains a temperature rather than refrigerates according to some , others say nope it deffo cools my fridge . FWIW in my mobile shed I chuck in a couple of those blue plastic thingies that I used in a coolbox camping days in a tent ...just to give the fridge a bit of help.
Most absorption fridges almost exclusively use ammonia as the refrigerant, by its nature limited in what it can achieve ,and generally the temp inside the fridge will always correalte to the ambient temp outside so sahara its going to struggle.
Other fridges like the Waecos are compression fridges and typically hold a refrigerant the same as a domestic fridge at home . they tend to be far more effective in hot climates physical properties of the gasses used.
Most are a blend or azeotropic gas mix to give their correct name. Because they are a mix of gasses , the physics bit means that there is an array of boiling points , latent heat and vapour points...this gives a "temperature glide" in real terms a lot more versatile than a single refrigerant like ammonia.
my two penneth
Channa
