When you are talking more humid at ground levels, give me some numbers. Is it 2% more humid at ground level?
I was hoping you would tell me!
I did google that question, and there is nothing even close to addressing the topic. So it probably doesn't matter.
(OTOH, in my personal experience I think the humidity at ground level could at times be 80-90% greater than at 8' in the air. I have gone out early in the morning on hot days to plant trees. When kneeling below 3' tall prairie grass that is covered with dew and in enough sunlight to start transpiration from the grass, I am drenched in sweat after 60 seconds of mild labor. When I walk back to the truck in open ground with a slight breeze, the sweat dries off very quickly in obviously much drier air - much to my relief!)
Chris, I raised this topic just to get some advice from experts that would drop into your thread. Don't pay attention to this "theoretical" portion of the responses.
Experts: I asked that question for two reasons. The first was being discussed in the thread - namely reducing the amount of free water that drops out in the air lines that might cause problems running back into the compressor in this "uphill" case. (Or cause freeze up problems in the winter where there are a few dips in the air line running to the pond.) The second reason was due to a cost/efficiency calculation. Any additional water vapor that is compressed is wasted work performed. Specifically, if it drops out of the air line as free water droplets after the compressor outlet gas has cooled during transportation through the pipeline, then that volume of compressed gas is NOT available at the diffuser. I suspect that amount is trivial, but I just wanted to see if any of our aerator experts had ever heard of that concept being addressed.
