[pianotech] Clarification Question: i'll take a pass

[Andrew Anderson]

Water does not have to condense (greater then 100% Rh) out of air to  
increase MC in wood, it simply has to be available in the air, greater  
Rh = greater availability.  We don't like to see pianos sitting in 60%  
Rh without a stringcover at least.  What about 80 to 90% Rh coming out  
of a duct and blowing directly onto the piano?

Andrew Anderson

On Aug 30, 2009, at 4:22 AM, Terry Farrell wrote:

> How is cool air blowing out an air duct going to "give up its  
> water"? If the air was at 100% RH at the coils, it will be at 99.9%  
> RH or lower as it exits the vent - how is it going to loose any more  
> water?
>
> Terry Farrell
>
> On Aug 29, 2009, at 10:01 PM, Andrew Anderson wrote:
>
>> SNIP
>
>> Cold air straight out of a duct (short ones make this obvious) has  
>> a high relative humidity and can easily give up its water.
>>
>> Andrew Anderson
>