Interior Shading = More cooling???
Interior Shading = More cooling???
(OP)
I'm looking at the procedure for calculating space design cooling load in Ashrae. For Solar gain - q=A x SC x SHGF x CLF. I understand that and agree with it. My problem lies when I read that charts for interior shading. The Values for "With Interior Shading" are higher than that without. I've read through the section but I can't seem to grasp the concept.
If I install a blind system shouldn't the blinds lower the amount of cooling required within the space? The sunlight can't get in and make everything feel warmer.
If I install a blind system shouldn't the blinds lower the amount of cooling required within the space? The sunlight can't get in and make everything feel warmer.





RE: Interior Shading = More cooling???
regards,
schola
RE: Interior Shading = More cooling???
But is not the heat gain from direct solar radiation trough the windows suposed to drop down?
RE: Interior Shading = More cooling???
RE: Interior Shading = More cooling???
With shades the radiation is absorbed by the lightweight shades which warm up quickly and cause an almost immediate transfer of heat to the space air. Yes the shades do reradiate a fraction of the heat back out the window, but the windows are designed to keep heat in.
The computerized load programs use transfer functions that approximate the time delays.
RE: Interior Shading = More cooling???
The right thing to do is to use exterior solar shades and tints in the glass, plus tuned Low-e coatings depending on your application for solar control. Keep the climate variations outside the building where they belong.
RE: Interior Shading = More cooling???
RE: Interior Shading = More cooling???
RE: Interior Shading = More cooling???
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
Have you read FAQ731-376 to make the best use of Eng-Tips Forums?
RE: Interior Shading = More cooling???