Cooling Load Factors: below grade wall
wall d1p8 R0p88 to wall d2p4 R1p76
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) | insulation level | u factor W per m2K (W/(m2·K)) |
|---|---|---|---|---|
| below grade wall | wall d1p8 R0p88 | 1.8 | R-0.88 | 0.505 |
| below grade wall | wall d1p8 R1p76 | 1.8 | R-1.76 | 0.343 |
| below grade wall | wall d1p8 R2p64 | 1.8 | R-2.64 | 0.262 |
| below grade wall | wall d1p8 Uninsulated | 1.8 | Uninsulated | 1.075 |
| below grade wall | wall d2p1 R0p88 | 2.1 | R-0.88 | 0.476 |
| below grade wall | wall d2p1 R1p76 | 2.1 | R-1.76 | 0.328 |
| below grade wall | wall d2p1 R2p64 | 2.1 | R-2.64 | 0.252 |
| below grade wall | wall d2p1 Uninsulated | 2.1 | Uninsulated | 0.98 |
| below grade wall | wall d2p4 R0p88 | 2.4 | R-0.88 | 0.45 |
| below grade wall | wall d2p4 R1p76 | 2.4 | R-1.76 | 0.315 |
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