Heating Hangar Size Structures

[chicopee]

For those who have directly or indirectly been involved with subject, how many air changes per hour have been suggested in heating load calculations. While the structure is not an air plane hanger, it is almost as big as one and is use for painting structural bridge beams. I just would like an idea on the air changes only.

 

[fredb]

Hello,

There are many mitigating factors that can be brought
to bear in the situation you describe. However if you
are looking for just a rule of thumb number, it would
be 6 to 12 air changes per hour.