gas refrigeration works OK when you don't have other options, but it is horribly inefficient. I mean inefficient in the true meaning of the word, of comparing energy used to watts of cooling provided. Not whether it works well, that isn't efficiency.
Compare my current electric fridge with its gas equivalent:
My fridge is a cheap Haier 2 door 215 litre standard electric fridge. It is rated to use 325 kwh a year, that is less than 1 kwh a day. (I have monitored its consumption myself and it actually averages about half of that - it generally uses about 1/2 a kwh per day.) It is a few years old now, a newer fridge would use even less.
The equivalent size in the Dometic gas fridge range is the RUA8408 and that is rated to use 5.8 kwh in 24 hours. that is six times the energy consumed by the electric fridge.
They are also expensive to manufacture - my Haier cost $298, the equivalent Dometic 3-way gas fridge costs about $3000.
we previously had a smaller 150 litre gas fridge and a small solar power system. We worked out it was cheaper to buy the electric fridge and upgrade our solar to give us the extra electricity we needed to run it, than it was to buy the gas fridge, even without factoring in the gas consumption of the new fridge. Plus the extra solar panels give us more power to use for other things, too.