ASHRAE 90.1 - 2007 - Metric Units

Envelope parameters*: 

Parameter\Climate zone

1

2

3

4

5

6

7

8

Roof U-Value (W/m2.K)

0.360

0.273

0.273

0.273

0.273

0.273

0.273

0.273

Wall U-Value (W/m2.K)

3.293

0.857

0.701

0.592

0.513

0.453

0.404

0.404

Floor U-Value (W/m2.K)

1.825

0.606

0.606

0.496

0.420

0.363

0.363

0.321

Glazing U-Value (W/m2.K)

6.81

4.26

3.69

2.27

1.99

1.99

1.99

1.99

Glazing SHGC

0.25

0.25

0.25

0.40

0.40

0.40

0.45

0.45

Infiltration rate (m3/m2.h)

9.73

9.73

9.73

9.73

9.73

9.73

9.73

9.73

 

*Envelope parameters reflect first use case in Table 5 of ASHRAE 90.1 2007 Energy Standard for Buildings Except Low-Rise Residential Buildings, SI 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/m2)

10.76

Plug Load power density (W/m2)

10.76

Heating Setpoint (C)

21

Cooling Setpoint (C)

24

Occupant Density

1 person / 18.6m2

 

 

HVAC Parameters:

Parameter

Value (For all climate locations)

Heating Efficiency

0.8

Cooling Efficiency

2.78

Ventilation Rate (L/m2.s)

0.305

 

Residential 

Space Uses Parameters:

Parameter

Value (For all climate locations)

Lighting power density (W/m2)

7.5

Plug Load power density (W/m2)

5.4

Heating Setpoint (C)

21

Cooling Setpoint (C)

24

Occupant Density

1 person / 40m2

 

HVAC Parameters:

Parameter

Value (For all climate locations)

Heating Efficiency

0.8

Cooling Efficiency

2.78

Ventilation Rate (L/m2.s)

0.305 

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