Cooling Load Factors: below grade floor
floor d1p8 w6 to floor d2p1 w9
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 | depth below grade m (m) | floor width m (m) | u factor W per m2K (W/(m2·K)) |
|---|---|---|---|---|
| below grade floor | floor d1p8 w6 | 1.8 | 6 | 0.202 |
| below grade floor | floor d1p8 w7 | 1.8 | 7 | 0.188 |
| below grade floor | floor d1p8 w8 | 1.8 | 8 | 0.176 |
| below grade floor | floor d1p8 w9 | 1.8 | 9 | 0.166 |
| below grade floor | floor d2p1 w6 | 2.1 | 6 | 0.187 |
| below grade floor | floor d2p1 w7 | 2.1 | 7 | 0.175 |
| below grade floor | floor d2p1 w8 | 2.1 | 8 | 0.164 |
| below grade floor | floor d2p1 w9 | 2.1 | 9 | 0.155 |
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