Quote:
Originally Posted by mjsibe
See attached
AIR conditioners can only do approximately 20° difference.
@90° outside air Best it can do is around 70°
@100° around 80°
And so on.
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Whoever "wrote" that article for Google has no idea what they're talking about.
Air conditioners DO NOT operate on a 20 degree differential based on OUTSIDE air... They function and are measured based on AMBIENT air... Ambient air is the differential between "air going into the air conditioner return grill" and "air flowing out of the discharge vents"... In other words, the differential is based on INTERIOR air temperatures (ambient air) all measured INSIDE the RV.
If the inside of your RV is 90F, then the air going into your A/C return vent is 90F and the air flowing out of the discharge vents "should be 20 degrees cooler" (minimum). That too, is based on the length of the duct run, the insulation around the duct and the velocity of airflow.
As the trailer "cools off" the air going into the A/C return air grill will be cooler and the discharge air temperature will also be cooler. When the interior of the trailer is lowered to 80F, then the discharge air at the vents "should be" closer to 60F. Once the trailer cools to near the thermostat setting, there should be "about a 20 degree difference" between the ambient air (that's the air around the air conditioner return air filter) and the discharge air outlets in the ceiling.
If you think about what that "google expert" explained, it would be impossible for any building in Las Vegas to be cooler than 100F when the "outside air temperature" is 120F, which is a common condition in Las Vegas in July/August.....
So, don't believe everything Google tells you, they're as "full of dressing as the Thanksgiving turkey".....