Cool air ventilation

[War Eagle]

Has anyone tried venting air from under the TD? What I mean is, everyone has windows on the sides and a vent with fan on top for ventilation/ air flow. Has anyone tried ducting a vent from under neith the TD so when your vent fan is running it's pulling the coller air from the shade provided by the TD? Think about it the air under the TD is going to be significantly cooler than that coming in from the sides (if you not already in a fully shaded area). Does this make sence to anyone else? Do you think it would be worth the trouble?

Opinions? I'm just trying to thing outside the drop.

[toypusher]

Makes sense. You might have to do some engineering to get it ducted around the mattress (for most of us anyway) and into the sleeping space.

[War Eagle]

Yea I was kinda thinking about building the duct into the wall and having it come into the TD just above the mattress. That way the cool air is entering as close to you as possible on those warm summer nights.

[MikeDrz]

you would have to be able to seal for weather while towing.

think puddles!

not a bad idea though.

Yea I was kinda thinking about building the duct into the wall and having it come into the TD just above the mattress. That way the cool air is entering as close to you as possible on those warm summer nights.

[toypusher]

you would have to be able to seal for weather while towing.

think puddles!

not a bad idea though.

If you build a 'baffle' type chamber and insure that it is waterproofed, there should be no problems with water getting in. (unless you leave you vent fan on while you drive thru water)

[Mary K]

War, I installed a 3" PVC access pipe in the floor in the galley cabinets for a A/C hook up.



Then covered it with a plenum up the bulkhead (silver thing)




and installed a vent cover inside.




IF ya had enough suckidge from the Vent Fan and opened this access/pipe, whatever, it could pull air from under the trailer.

Just a idea to roll between your fingers...

Mk

[madjack]

...an EXCELLENT idea it is MK...I have pondered just how to get a vent down at the end of the footwell and you had it allready....
madjack

[48Rob]

Hi,

I put a floor vent in my Cabin car...slightly different than the average tear, since there is a small amount of open floor space.

I used an adapter from a heating/cooling place to protect the hole from road spray, it covers the hole, and places the opening toward the rear of the trailer, and is angled down hill so any water that might get close runs right back out.

There is also an insect screen inside the adaptor, to keep unwanteds out.

The inside has a nice brass and bronze grill that is plenty strong enough to step on, though it is near the wall.

The theory was since warm air rises, I could use it to bring cool air in from underneath, and push warm air out the top vent.

It works pretty well, as I have a fan in the adaptor in the floor, and a fan in the roof vent.
They are wired together, so one pulls air in, and the other pushes it out.

Does a good job up to about 85 degrees, then its time for the AC.

Rob

[emiller]

I would just think if your at a camp ground and someone is running there engine to warm up, the exhaust can come in. Fuel vapors and dirty air are usually heavier and tend to stay near the ground. Clean air stays high. Thats why a shop has to have electrical outlets 18" off the ground because of gases that are heavier than air.

[john]

I vented through the bottom of my tear. I used a wall heater that required some air space around the back of it. I found that arispce useful running electrical wire behind the heater. On the sides of the heater I installed those round aluminum vents some of us use on the outside of the tear.

Under the tear I mounted a bathroom vent fan and ran power to it through a dimmer switch to keep the noise down. As it turned out the noise was not a problem.

This was a later addition and does not show up well in my build pics. There is one pic, though, does show the heater and just barely visible is one of the vents on the side where air is sucked out of the tear. Fresh air enters through some vents on the exterior sides of the tear above my cabinets. Or the windows if open, or around the doors.


Pic with vents barely visible...



Pic before venting...



Pic 2 before venting...

[War Eagle]

Greta info MK and Rob. Sounds like this is a worthy idea. Glad I asked and really glad that some have already found it to be useful.

[TRAIL-OF-TEARS]

I cut 2- 2" holes in my floor just in front of my A/C. I put 2 of those round louvered vents on it with the louvers opening to the rear of the tear. I then put 2- 2" pvc 90^ and turned those into the return air of my A/C. I just cut a small notch in the matress to fit the pvc elbows. When it is cool outside I can just run the fan on the A/C and crack a window.

[EZ]

Isn't that kind of like having a fan that is sitting on a picnic table in the sun blowing on you and expecting the air the fan blows to be cooler if you put an unbrella over it? Seems to me that any cooler air under the camper would soon be replaced by the same temperature air as in the sun. Or maybe I'm crazy

Ed

[toypusher]

Isn't that kind of like having a fan that is sitting on a picnic table in the sun blowing on you and expecting the air the fan blows to be cooler if you put an unbrella over it? Seems to me that any cooler air under the camper would soon be replaced by the same temperature air as in the sun. Or maybe I'm crazy

Ed

Warm air rises, therefore cool air sinks!!

[War Eagle]

You always migrate to the shade becasue it's cooler. So this would be a system that would pull shaded air as apposed to suned air. I think it would be cooler and seems that we have a few members with it in action.