HomeMy WebLinkAbout2820 Longboat Way - Disclosures/Final Energy - 12/27/2002Sara's Energy Scoring
813 Oxford LN
DATE FT. COLLINS, CO 80525
12/27/02 (970)377-1056
CUSTOMER: Kaufman and Broad
2820 Longboat Way
Fort Collins ,CO
BUILDING CONDITIONS:
Interior Temp = 68 F Exterior Temp = 40 F
Volume = 21500 Cu. Ft. Above Grade Surface Area = 0 Sq. Ft.
Number of Stories = 2 Number of Occupants = 2
Wind Shield Factor = .9
HOUSE TEST : Depressurized
Fan Model = 3
Performed By SARA
Data Points:
House Pressure
Fan Pressure CFM
%Error
Fan Configuration
58
84
1575
—0.4
Ring A
51
70
1439
0.7
Ring A
44
55
1277
0.5
Ring A
38
42
1118
—1.3
Ring A
26
24
847
1.1
Ring A
19
14
649
—0.8
Ring A
Correlation Coefficient
Flow Coefficient
Exponent
r = .9994
C =
63.56
n = 0.792
Results:
Air Flow @ 50 Pascals :
1407 CFM50 +/— 0.4%
3.93 ACH50 (Air Changes Per Hour)
Effective Leakage Area (LBL) = 54.00 Square Inches +/— 3.2%
Equivalent Leakage Area (CANADA) = 115.53 Square Inches +/— 2.0%
Estimated Natural Infiltration (50 Pascal Flow Divided By 12.2)
= 115 CFM
= 57.6 CFM/OCCUPANT
= 0.32 AIR CHANGES PER HOUR