Propane powered AC?

Just leave the fridge door open :B

I used to work on the 60s gas fired absorption chillers and you wouldn't want one on your rv roof! I think a 4T unit weighed 1200+ lbs. You wouldn't want the repair bills either when they break. It took days to clean up after a blown solution pump! It was VERY hard to diagnose if they needed solution, ammonia, inhibitor or whatever and it was a long process to get all the ingredients balance exactly right. None of the diagnosing process could be rushed. The most I could do was 2 gas/air jobs in a day compared to 6+ regular AC service jobs. Those Arkla and Bryant gas/airs were a big thing in areas where gas was dirt cheap. Craig

Caveman Charlie wrote:
Ya, what everybody else said. Remember refrigeration units be it, in a fridge or AC, do not make cold air. They remove the heat from the air. So, a propane AC would have to be tall, big, and the camper would have to be insulated as well as a fridge. And, then you would still need a fan to move the air around.

Actually an AC/refrigeration only MOVES heat from one place to another.gas ac's that I used to work on we're always a "chiller" style system .thank heaven they have gone the way of the dinosaurs.

My Onan 5500 is propane and will run about 9 hours on 30 lb tank. Much better to use elec, but the propane is great for those brief stops or power outages.

I suppose one practical approach (more practical than a whole-RV absorption air conditioner, at least) might be to modify a truck reefer unit by replacing the little diesel engine with a propane-fueled engine. It wouldn't have much if any advantage over a propane fueled generator and traditional electric air conditioner except possibly being a bit more efficient overall (due to avoiding the conversion from mechanical to electrical energy and back again).

Ya, what everybody else said. Remember refrigeration units be it, in a fridge or AC, do not make cold air. They remove the heat from the air. So, a propane AC would have to be tall, big, and the camper would have to be insulated as well as a fridge. And, then you would still need a fan to move the air around.

Dag gone it. Now you guys have done gone and spoiled the idea of ducting a dedicated ducted cooler cup holder for boon dockers.

My AC unit does run on LPG.

I push the button that starts the Onan LP microquiet generator and then turn on the AC unit. :B

Ok, a small house fridge draws say 100 watts... A small Window Air conditioner perhaps a thousand.. Think about this

I have seen freezers chilled by Absorption cooling units but they are very large, and very very very well insulated, the Absorption cooling takes up to 24 hours to cool your RV Fridge.. how long do you think it would take to cool your RV which has far less insulation... A cooling unit big enough to do a decent job would be as big as the RV if not bigger.

I don't think that you understand how they each cool differently.
for the a/c to cool like a RV fridge does, the RV would have to be airtight so the gas absorption process could remove tbe heat.