Air Pipe Through wall, Condensation?

[cthulu]

I have a finished pole barn with drywall and foam board insulation. The exterior is metal sheet screwed into the horizontal beams that is commonly seen. I put a ceiling in and it is also insulated, should be around R40 in the walls and ceiling.

I'm looking to move my compressor into a smaller building that's nearby but am worried about running the metal pipe through the wall due to condensation. I live in western WA so it stays pretty temperate but in winters I heat the garage to 65F and it gets down to 30F outside, summers can be 90F outside and due to how much insulation I put in the ground keeps the garage at about 60F or so. (which makes me pretty happy)

I have active attic ventilation that kicks on at high temp/humidity as well as a vent into the garage itself to keep air moving a bit in there.

My concern is sticking a copper pipe through the wall in order to migrate the compressor into the smaller building, do I need to worry about condensation forming on the pipe?

 

[nmk_61802]

CA should be warmer than the ambient air due to the act of compressing the air. Cool outside vs Warm inside equals Condensation on the inside (this is why you put vapor barrier on the inside of homes in the Northern climates). You would only need to worry about exterior condensation if the contents are COLDER than ambient.

This is also why toilets sweat in the summer, moisture saturated warm air dropping the water out on the cold toilet surface.

You will have condensation in the pipe that you should plan for handling.

 

[sberry]

This isn't going to hurt anything, its so minor. Cold water running thru continuous may be another matter but air is moot.

 

[larry_g]

The above is true but if your still concerned you can wrap the pipe with foam pipe wrap to keep it isolated from the air.

lg
no neat sig line

 

[cthulu]

Thanks everyone, much appreciated.