Dean May wrote: > You are correct, Ron, that numbers like that do present problems for tuning > stability. But that isn't really what the discussion between us has been > about. You refuse to acknowledge that a/c air coming out of the vent is at a > very high RH. Even here you forcefully assert that it makes no difference > where the vent is in relation to the piano. I don't refuse to acknowledge it at all. Air chilled to the dew point will HAVE to have a very high RH% if chilling it produced any moisture runoff. I've been unsuccessfully trying to point out to you that RH% is NOT the same as MC, and raising the RH% by chilling does NOT increase the absolute moisture content of air. The fact that the A/C is producing water proves that the air coming out has a lower moisture content than the air going in. That's it. > One of the pianos I previously spoke of encountering with the a/c blowing on > it had a full dampchaser system with a back cover. Yet it was still going > substantially sharp. If I am to take your advice then, the a/c vent blowing > on it is of no consideration. I won't chase details with you based on a false premise, but I don't advocate either a heating or cooling duct dumping directly into a piano, whatever the RH%, and never have. Any more words you'd like to put into my mouth, or can we get reasonable about this? Ron N
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