HomeMy WebLinkAbout6857 Ranger Dr - Disclosures - 09/18/2003Sara's Energy Scoring
813 Oxford LN
DATE FT. COLLINS, CO 80525
09/18/03 (970)377-1056
CUSTOMER: US Homes '/
6857 Ranger
Fort Collins ,CO
BUILDING CONDITIONS:
Interior Temp = 68 F Exterior Temp = 50 F
Volume = 51500 Cu. Ft. Above Grade Surface Area = 0 Sq. Ft.
Number of Stories = 2 Number of Occupants = 5
Wind Shield Factor = 1
HOUSE TEST : Depressurized
Fan Model = 3
Performed By SARA
Data Points:
House Pressure
Fan Pressure
CFM
%Error
Fan Configuration
38
220
2561
-1.7
Ring A
35
190
2382
1.1
Ring A
32
150
2119
0.5
Ring A
30
134
2004
2.8
Ring A
27
97
1708
-0.2
Ring A
25
75
1504
-3.6
Ring A
Correlation Coefficient
Flow Coefficient
Exponent
r = .9941
C =
29.83
n = 1.229
Results:
Air Flow @ 50 Pascals :
3650 CFM50 +/- 3.1%
4.25 ACH50 (Air Changes Per Hour)
Effective Leakage Area (LBL) = 46.45 Square Inches +/- 14.1%
Equivalent Leakage Area (CANADA) = 148.36 Square Inches +/- 8.0%
Estimated Natural Infiltration (50 Pascal Flow Divided By 13.6)
= 269 CFM
= 53.8 CFM/OCCUPANT
= 0.31 AIR CHANGES PER HOUR