Document oM6LpmKeBjwQEKd5Mw42adgxg

American Society of Heating and Ventilating Engineers Guide, 1931 Chapter 4--Heat Losses by Infiltration 12 .U a S 06 S G7 5(26 105 ^ 04 QQ3 3 SO.OS c 11 j 7 n 7 Sl k tf / 7 1i jr 2J 14S69 S< < hi L 1 (. Z 40.69 $ f j/ tr 7 1 t t A-Without Storm Sash f 1 L 2r r L (i '1 L rjf ti u. 7 jk R-Storm Sash Suspended 3540 < r -- fe Lh OAME AS O WITH WOOL WEATHEZ-OTe/P APPLIED To Storm Sash _ 2630 3 _S --1 Q i V// * t i, 2042 g t 7i ,,t 0 (J JU IW fA/ fcW ww tivv Infiltration CfUtPut Foot Or Chalk Fig. 6. Infiltration through Sash Perimeter of Window with and without from it at higher levels. On the other hand, the wind velocity at lower levels may be somewhat abated by surrounding obstructions. Further more, the chimney effect is reduced in multi-story buildings by the partial isolation of floors preventing free upward movement, so that wind and temperature difference may seldom cooperate to the fullest extent. INDICATCQ W H O V t L OC/Ty * M IL \5 p p ftO Uft Fig. 7. Infiltration through Sash Perimeter of Window with and without Storm Sash--% in. Crack and % in. Clearance 76 77