Cooling Load Factors: construction material
G03 to I05
ASHRAE cooling load calculation factors — people heat gain, lighting power density, luminaire heat fractions, motor efficiency, cooking/warewashing appliance heat gain, office/computer equipment heat gain, glazing optical properties, radiative/convective fractions, surface solar absorptance, wall and roof conduction time series (CTS), construction material layer properties, radiant time series (RTS), zone characteristics, and below-grade heat transfer coefficients. Source: ASHRAE Handbook Fundamentals 2021, Chapter 18.
| factor type | item id | conductivity W per mK (W/(m·K)) | density kg per m3 (kg/m3) | description | layer id | mass kg per m2 (kg/m2) | resistance R m2K per W ((m2·K)/W) | specific heat kJ per kgK (kJ/(kg·K)) | thermal capacity kJ per m2K (kJ/(m2·K)) | thickness mm (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| construction material | G03 | 0.07 | 400 | 13 mm fiberboard sheathing | G03 | 5.1 | 0.19 | 1.3 | 6.61 | 12.7 |
| construction material | G04 | 0.15 | 609 | 13 mm wood | G04 | 7.7 | 0.08 | 1.63 | 12.63 | 12.7 |
| construction material | G05 | 0.15 | 609 | 25 mm wood | G05 | 15.5 | 0.17 | 1.63 | 25.26 | 25.4 |
| construction material | G06 | 0.15 | 609 | 50 mm wood | G06 | 30.9 | 0.33 | 1.63 | 50.52 | 50.8 |
| construction material | G07 | 0.15 | 609 | 100 mm wood | G07 | 61.8 | 0.66 | 1.63 | 101.25 | 101.6 |
| construction material | I01 | 0.03 | 40 | 25 mm insulation board | I01 | 1 | 0.88 | 1.47 | 1.49 | 25.4 |
| construction material | I02 | 0.03 | 40 | 50 mm insulation board | I02 | 2 | 1.76 | 1.47 | 2.98 | 50.8 |
| construction material | I03 | 0.05 | 40 | 75 mm insulation board | I03 | 3.1 | 2.64 | 1.47 | 4.47 | 76.2 |
| construction material | I04 | 0.05 | 8 | 89 mm batt insulation | I04 | 0.7 | 1.94 | 0.84 | 0.59 | 89.4 |
| construction material | I05 | 0.05 | 8 | 154 mm batt insulation | I05 | 1.2 | 3.35 | 0.84 | 1.02 | 154.4 |
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