Are there cooling benefits for installing an exhaust fan in a false ceiling?
I so wanted an energy efficient home. I specified that when we began the remodel. All of the new windows are energy efficient, as are all of the appliances, and I am thankful for that.
But to my disgust, the insulation that I requested for my remodel was not installed and the walls are up. My home is a penthouse in a 1970s brick building in Barcelona. It is on the 9th floor, and has no common walls. 3 sides (north, east and south) are fully exposed. The west wall is partially exposed and has minimal protection because about 75% of it faces an light well.
They will be installing a false ceiling, about 6-8 inches below the existing ceiling. They've already installed a lot of tubing for the radiators (it does get cold in the winter) electricity, etc, on the old ceiling so I don't think we can install insulation up there.
My question is this: Is there any cooling benefit (or any other benefit) for installing 1, 2 or 3 slim exhaust fans to extract hot air from the space between the false ceiling and the old ceiling on hot days? The room below this false ceiling is about 17 feet by 35 feet, and it has the east-facing wall. It gets steady sun from about 11am until sundown. What made me think about this is the attic fans from my childhood.
I should add that the exhaust fans would have to be lateral - we cannot punch through the roof. So I was thinking slim fans - a few of them.
Anyway, I am grateful for any advice. Thanks in advance!
Posted Sun, 07/20/2014 - 14:40
Edited Sun, 07/20/2014 - 15:37
Other Questions in Energy efficiency and durability
Since drywall has a permeance of 0.02 liter/sec - m at 75 PA is ever possible to have sheathing dry to the interior of the home?