Evaporative Coolers?
Evaporative Coolers?
(OP)
My question goes towards making a A/C unit pump out more or colder air on a hot day..
Could you direct a Evaporative Coolers output to a A/C units condenser unit to make the A/C produce colder air?
Again..
I have a few Semi-Truck trailers.. They have 3 3-ton A/C units with the Condenser mounted below the trailer. There is a "skirt" that goes around the trailer to make it look more.. finished instead of like a trailer.
The problem is under that "skirt" it gets quite warm as you could imagine from having 3 3-ton units operating full blast for a few hours on a 100+ degree day.
My question is would putting a Evaporative Cooler under there produce colder air for the condensers to use so that they in turn produce colder air..
Or would the Humidity factor into that and they would end up canceling each other out?
-Eric Peters
Could you direct a Evaporative Coolers output to a A/C units condenser unit to make the A/C produce colder air?
Again..
I have a few Semi-Truck trailers.. They have 3 3-ton A/C units with the Condenser mounted below the trailer. There is a "skirt" that goes around the trailer to make it look more.. finished instead of like a trailer.
The problem is under that "skirt" it gets quite warm as you could imagine from having 3 3-ton units operating full blast for a few hours on a 100+ degree day.
My question is would putting a Evaporative Cooler under there produce colder air for the condensers to use so that they in turn produce colder air..
Or would the Humidity factor into that and they would end up canceling each other out?
-Eric Peters





RE: Evaporative Coolers?
The air under your trailer is your heat sink for the A/C units, and anything you can do to reduce the temperature down there helps the efficiency of the A/C.
Good idea.
rmw
RE: Evaporative Coolers?
Secondly you are not supposed to overcool the air because of obvious problems with liquid entering the compressor. Note that capacity control is not very good with small DX systems and there are more chances of liquid entering your compressor.
Further, I wish not to cool the freon much below its saturation temperature.
Your final temperature in a controlled space depends upon heat load in the room and reduced condensing temperature has little effect on it. You may get some reduction in power consumption.
Just arrange a way to throw out the heated air by some sort of grill arrangement in the skirt.
Regards,
RE: Evaporative Coolers?
RE: Evaporative Coolers?
Make sure I understand it. YOu have the bottom of the trailers skirted, and you have the condensing units inside those skirts?? Which results in the high temperatures under the trailer floor???
You need to get those in the open, or open up some ventilation paths to them so that they can get the coolest ambient air available to operate on. Their efficiency must be terrible.
rmw
RE: Evaporative Coolers?
Direct a small spray of water onto the surface of the condenser, this will have the same effect as the Evaporative Cooler. To reduce the volume of water used in this process, you could also collect the water condensed on the evaporator coil and return it to the water tank.
Good luck,
Cooky
RE: Evaporative Coolers?
Thank you everyone for your reply. I think we are going to add two box fans. One to the front and one to the rear (push & pull) to get some air flowing threw.
The sprayer on the condensers might work also I'll have to try and figure out a easy way to implement this.
Thank You All,
-Eric Peters
RE: Evaporative Coolers?
good luck!
-pmover
RE: Evaporative Coolers?
More to the topic, our outdoors units are rained on all the time, and rain is not exactly pure as you can note from your auto windshield after a rain.
Still, water will leave behind any solids it has in it, dissolved and undissolved as it evaporates off of the condensing unit. So, if you are going to do this, flood it, so that you only get sensible heat transfer, and not evaporation from the coil surfaces.
And, the evaporator condensate is not totally free of contaminates either. What ever is in the atmosphere flowing across the coil gets in the condensate.
rmw