Insulation Experiment

[Forrest747]

Preliminary data is in. Downloaded the hobo data logger after running it for 12 hours. It took the 3/4 inch Baltic birch 27 cubic inches 8 hours and 6 minutes to get to minus 15 degrees F. 3/4 inch white insulation from he'll(personal observation) took 10 hours and 56 minutes to reach the same temperature.
I will construct a box with a 1 inch and half roof a four inch mattress and 1/8 inch interior and see how long it takes to get cold. I can't put the light bulb in sorry. The dairy queen laboratory had issues with it. It's not like i am going to be stealing national secrets on cake freezing



As you can see from the graph it was a pretty linear drop. the -15 was the level at which the frezzer could go.

[S. Heisley]

Thanks, Forrest. That was good.

The difficult part of this test is that it is a "box test". To make a realistic test, one would have to use two teardrops of at least 4x8' size with a human body inside. This is because the human body continually gives off heat, which could change the results. Two bodies in a tear would change the results more, etc. Still, we can see that the insulation in the test box did make a difference.

Of course, we could probably figure it all out by polling our own camping friends....

[Forrest747]

Oh i totally agree there are many flaws with this test, with reference to our application. It was a pure ambient static test to see how long it took for teh inside to match the outside. What i took away from this data is that it took longer with the insulation than just plywood by almost 3 hours. This would support a cookie cutter type construction for best results and to save weight. There are alot of other factors to figure besides teh body heat generated inside a trailer. how much cubic space do we have in there, cabinets over teh feet an open concept loft, bunk beds trolly top door seals, windows vents open or closed, enviorment is it raining windy stale air humidity, pack of angus bears rocking the trailer. LED incandecent coleman lantern wool socks argyle pajamas no pajamas thick blanket sheets no sheets sleeping bag. fantastic fan ear muffs dog cat ferret so many variables. I am sure there is an app for this.

Next build for me will be cookiecutter with a 1/8 inch exterior sides 1/4 in roof and front with a 1/8 inch galley. non white insulation with an 1/8 inch interior veneer.

[Lgboro]

If you could have put in a way to measure noise inside the two boxes you would have similar results and in my opinion another reason to insulate.

[S. Heisley]

...pack of angus bears rocking the trailer

...Walk the Winds...Maybe ya had to be there to understand.... Good one, Forrest!