Condensation

[markdoane]

I found a site that lists all the manufacturers of air-to-air heat exchangers. All were too large for this application by a factor of 5. I think you would need to do what Dan was considering in #13.

I wouldn't do any thermodynamic calculations because the numbers (cost savings) won't justify an installation. Rather you should estimate the number of air changes desired and base the design on that.

I think one air change per hour would be sufficient to keep condensation to a minimum and not be to costly in terms of propane. It would be best to have the inlet and outlet at opposite ends of the trailer.

[CanoeStream]

Oh Don... opposite ends? This sounds like an application for that infamous idea born years too soon -- the Suspended Ceiling thread: http://www.airforums.com/forum...ngs-18436.html. Maybe people could store their bikes & BBQ grills up there too!

[markdoane]

Originally Posted by Canoe stream

Oh Don... opposite ends?

Maybe that's a little bit of a stretch. You wouldn't want the inlet and outlet right next to each other though.

Would you?

[BigAl]

Air Exhange.
I leave my bathroom fan vent open and assume that there are enough air leaks in the trailer to bring in fresh air. This leaves me with almost no condensation down to about 34 degrees Fahrenheit. What condensation I get is removed with a towel twice a day.
guess what! I have clean windows.
If I close the vent condensation is intolerable.
That's with two people in a 31 foot trailer.
I also leave the bathroom vent open when the trailer is not being used and have never seen any condensation problems.
Al

[McMullen]

Ive cured the condensation problem. I hung a piece of plastc from the ceiling to the floor right beside thr bed. that keeps all the moister that we breath in one small space. the moister then condences on the bedside window and runs dow to the little aluminum box at the bottom of the window. from that I ran a hose up to the water tank and save most of the water for reuse. with a little work I think I can reach 100% eficancy. I may do the same thing with the moister from the Bath room. Mac