HomeMy WebLinkAbout6915 Ranger Dr - Disclosures - 03/12/2004 (2)Sara's Energy Scoring
813 Oxford LN
DATE FT. COLLINS, CO 80525
03/12/04 (970)377-1056
]USTOMER: US HOMES 6 915 Ranger ER-1-
Fort Collins ,CO
3UILDING CONDITIONS:
Interior Temp = 68 F Exterior Temp = 50 F
Volume = 38500 Cu. Ft. Above Grade Surface Area = 0 Sq. Ft.
Number of Stories = 2 Number of Occupants = 2
Wind Shield Factor = 1
iOUSE TEST : Depressurized
Fan Model = 3
Performed By SARA
data Points:
House Pressure
Fan Pressure
CFM
%Error
Fan Configuration
56
177
2300
2.6
Ring A
52
159
21EIl
—0.7
Ring A
43
138
2033
—2.6
Ring A
35
127
1952
-1.1
Ring A
28
113
1842
—0.8
Ring A
20
100
1734
2.2
Ring A
Correlation Coefficient
Flow Coefficient
Exponent
r = .9797
C =
754.18
n = 0.270
Results:
Air Flow @ 50 Pascals s
2173 CFM50 +/— 1.2$
= 3.39 ACH50 (Air Changes --Per-- Hou-r- )
Effective Leakage Area (LBL) = 311.07 Square Inches +/— 6.4%
Equivalent Leakage Area (CANADA) = 412.87 Square Inches +/— 3.9%
Estimated Natural Infiltration (50 Pascal Flora Divided By 13.6)
= 160 CFM
80.0 CFM/OCCUPANT
= 0.25 AIR CHANGES PER HOUR