SidecarFlip wrote:
dougrainer wrote:
Sorry, but there is No Relationship between external temps and interior refer temps. THAT SAID. If you park a RV in 100 degree heat and have NO AC cooling the inside and have the refer ON, odds are it will not cool to spec. Same thing with a residential refer. Put that residential in a hot barn or garage and expect the residential to keep things cold will be hard to do. My residential in my old house in the garage in 90 plus heat had a hard time keeping things below 45 degrees. When I moved and was able to put the same refer in a utility room that had AC, it would get below 35 consistently and still does after 34 years. But, there is NO Temp Differential measurement like a AC temp Diff measurement for a RV refer. Using your logic, the only way the RV refer would get below 40 degrees was if the outside was 70 degrees or colder. In Texas 100 degree heat, I get RV refers to 32 to 34 degrees all the time in Customer testing. I ALWAYS have the AC ON to keep the interior below 80 degrees. Doug
My only comment to your comment is, what I read on the .net and if it's true or false, I cannot verify other than tracking my units interior temperatures. It's empty and has external cooling fans for airflow and internal fans as well.
My Dometic Coolboox sits on the backseat of my crewcab pickup truck and is always at 40 or less in the fridge section and 0 (F) in the freezer section whether the ac in the truck is on or not.
My wife uses the Coolbox when going to the grocery store in the summer to keep frozen stuff frozen, we live 30 miles from the grocery store and she don't have ac in her buggy and rock hard ice cream has never been an issue.
I believe you'll see a gradual phase out of ammonia fridges in favor of high efficiency duty cycle compressor fridges. Many builder are now offering them as an option and the initial cost is actually less plus they are inherently safer as in no flame inside.
This winter, mine is coming out (ammonia fridge) and a compressor Dometic is going in, in it's place. No more 6-8 hour cool down before use either. More like 45 minutes. If the fridge performs half as good as the Coolbox, I'll be quite happy.
WE ARE NOT TALKING ABOUT COOLBOXES. WE ARE TALKING ABOUT RV REFERS.
Ammonia units are NOT being phased out. They have been around for over 120 years. Norcold and Dometic cannot build enough RV ammonia refers to satisfy the demand. Doug
