Niraj Poudel
Envelope parameters*:
|
Parameter\Climate zone |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|
Roof R-Value (ft2.h.F/BTU) |
15.0 |
20.0 |
20.0 |
20.0 |
20.0 |
20.0 |
20.0 |
20.0 |
|
Wall R-Value (ft2.h.F/BTU) |
NR |
5.7 |
7.6 |
9.5 |
11.4 |
13.3 |
15.2 |
15.2 |
|
Floor R-Value (ft2.h.F/BTU) |
NR |
6.3 |
6.3 |
8.3 |
10.4 |
12.5 |
12.5 |
14.6 |
|
Glazing U-Value (BTU/ft2.h.F) |
1.20 |
0.75 |
0.65 |
0.40 |
0.35 |
0.35 |
0.35 |
0.35 |
|
Glazing SHGC |
0.25 |
0.25 |
0.25 |
0.40 |
0.40 |
0.40 |
.045 |
0.45 |
|
Infiltration rate (cfm/ft2) |
0.532 |
0.532 |
0.532 |
0.532 |
0.532 |
0.532 |
0.532 |
0.532 |
*Envelope parameters reflect first use case in Table 5 of ASHRAE 90.1 2007 Energy Standard for Buildings Except Low-Rise Residential Buildings, I-P Edition. I.e. roof with insulation entirely above deck; walls and floor for the mass type.
Office
Space Uses Parameters:
|
Parameter |
Value (For all climate locations) |
|
Lighting power density (W/ft2) |
1.0 |
|
Plug Load power density (W/ft2) |
1.0 |
|
Heating Setpoint (F) |
69.8 |
|
Cooling Setpoint (F) |
75.2 |
|
Occupant Density |
1 person / 200 ft2 |
HVAC Parameters:
|
Parameter |
Value (For all climate locations) |
|
Heating Efficiency |
0.8 |
|
Cooling Efficiency |
2.78 |
|
Ventilation Rate (cfm/ft2) |
0.06 |
Residential
Space Uses Parameters:
|
Parameter |
Value (For all climate locations) |
|
Lighting power density (W/ft2) |
0.7 |
|
Plug Load power density (W/ft2) |
0.5 |
|
Heating Setpoint (F) |
69.8 |
|
Cooling Setpoint (F) |
75.2 |
|
Occupant Density |
1 person / 430 ft2 |
HVAC Parameters:
|
Parameter |
Value (For all climate locations) |
|
Heating Efficiency |
0.8 |
|
Cooling Efficiency |
2.78 |
|
Ventilation Rate (cfm/ft2) |
0.06 |
Comments