HomeMy WebLinkAbout7109 Ranger Dr - Disclosures - 03/25/2003Sara's Energy Scoring
813 Oxford LN
DATE FT. COLLINS, CO 80525
03/25/03 (970)377-1056
CUSTOMER: US Homes
7109 Ranger bpi
Fort Collins ,CO
BUILDING CONDITIONS:
Interior Temp = 68 F Exterior Temp = 50 F
Volume = 39500 Cu. Ft. Above Grade Surface Area = 0 Sq. Ft.
Number of Stories = 2 Number of Occupants = 2
Wind Shield Factor = 1
HOUSE TEST : Depressurized
Fan Model = 3
Performed By SARA
Data Points:
House Pressure
Fan Pressure
CFM
%Error
Fan Configuration
57
156
2161
—1.4
Ring A
50
143
2070
0.1
Ring A
44
130
1974
1.0
Ring A
37
114
1850
2.1
Ring A
30
90
1646
—0.4
Ring A
23
69
1443
—1.9
Ring A
Correlation Coefficient
Flow Coefficient
Exponent
r = .9946
C =
370.29
n = 0.440
Results:
Air Flow @ 50 Pascals :
= 2068 CFM50 +/— 0.8%
3.14 ACH50 (Air Changes Per Hour)
Effective Leakage Area (LBL) 193.12 Square Inches +/-•- 5.4%
Equivalent Leakage Area (CANADA) = 299.30 Square Inches +/— 3.3%
Estimated Natural Infiltration (50 Pascal Flow Divided By 13.6)
152 CFM
76.2 CFM/OCCUPANT
= 0.23 AIR CHANGES PER HOUR
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