HomeMy WebLinkAbout6821 Autumn Ridge Dr - Disclosures - 10/09/2003 (2)Sara's Energy Scoring
813 Oxford LN
DATE FT. COLLINS, CO 80525
10/09/03 (970)377-1056
CUSTOMER: Kaufman and Broad
6821 Autumn Ridge #2
Fort Collins ,CO
BUILDING CONDITIONS:
Interior Temp = 68 F Exterior Temp = 55 F
Volume = 12500 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
58
35
1036
-0.3
Ring A
49
27
912
-0.6
Ring A
44
24
860
1.5
Ring A
40
20
786
-0.5
Ring A
31
14
659
0.7
Ring A
20
7
467
-1.2
Ring A
Correlation Coefficient
Flow Coefficient
Exponent
r = .9991
C =
51.73
n = 0.739
Results:
Air Flow @ 50 Pascals :
931 CFM50 +/- 0.5%
= 4.47 ACH50 (Air Changes Per Hour)
Effective Leakage. Area (LBL) = 40.84 Square Inches +/-
Equivalent Leakage Area (CANADA) = 83.27 Square Inches +/-
Estimated Natural Infiltration (50 Pascal Flow Divided By 13.6)
- 69 CFM
= 34.3 CFM/OCCUPANT
= 0.33 AIR CHANGES PER HOUR
3.7%
2.3%