Ammonia Fridges, read an interesting piece a while ago
Read an article concerning ammonia fridges and their relationship to ambient versus internal temperatures.
The article stated that the temperature differential is around 30 degrees internal versus external and it seems to hold water in my testing.
Been running my Dometic on shore power in the side yard (empty). I have adequate airflow over the upper condenser with the correct baffles and 2 120mm muffin fans pulling the air through the backside cavity from the lower intake out through the upper vent and 2 additional muffin fans inside the fridge circulating cold air inside. The fridge is well insulated, I added almost a full roll of unfaced R11 insulation around the entire fridge, between the fridge body and the outer cabinet so I'm as 'efficient' as I can get.
I have a recording remote thermometer in the fridge with the readout outside and I've watched for about a week now and the interior temp averages about 30 degrees colder than ambient, more at night, closer to 50 dergrees differential than during the day when it drops back to around 30
The article I read seems to be correct at around 30 degrees temperature differential.
I think this winter, I'll be pulling the Dometic ammonia fridge and installing another Dometic C series Danfoss Compressor unit in it's place. I have a portable Dometic Cool box I carry in the truck and it has no issue holding whatever temperature I set it at from 30 degrees on up in the fridge section to minus 15 in the freezer section.
The article stated that the temperature differential is around 30 degrees internal versus external and it seems to hold water in my testing.
Been running my Dometic on shore power in the side yard (empty). I have adequate airflow over the upper condenser with the correct baffles and 2 120mm muffin fans pulling the air through the backside cavity from the lower intake out through the upper vent and 2 additional muffin fans inside the fridge circulating cold air inside. The fridge is well insulated, I added almost a full roll of unfaced R11 insulation around the entire fridge, between the fridge body and the outer cabinet so I'm as 'efficient' as I can get.
I have a recording remote thermometer in the fridge with the readout outside and I've watched for about a week now and the interior temp averages about 30 degrees colder than ambient, more at night, closer to 50 dergrees differential than during the day when it drops back to around 30
The article I read seems to be correct at around 30 degrees temperature differential.
I think this winter, I'll be pulling the Dometic ammonia fridge and installing another Dometic C series Danfoss Compressor unit in it's place. I have a portable Dometic Cool box I carry in the truck and it has no issue holding whatever temperature I set it at from 30 degrees on up in the fridge section to minus 15 in the freezer section.
