Cooling Load Factors: roof cts
number 31 to number 37
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 | assembly number (dimensionless) | ctf h00 pct | ctf h01 pct | ctf h02 pct | ctf h03 pct | ctf h04 pct | ctf h05 pct | ctf h06 pct | ctf h07 pct | ctf h08 pct | ctf h09 pct | ctf h10 pct | ctf h11 pct | ctf h12 pct | ctf h13 pct | ctf h14 pct | ctf h15 pct | ctf h16 pct | ctf h17 pct | ctf h18 pct | ctf h19 pct | ctf h20 pct | ctf h21 pct | ctf h22 pct | ctf h23 pct | description | total R m2K per W ((m2·K)/W) | u value W per m2K (W/(m2·K)) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| roof cts | number 31 | 31 | 2.8 | 2.6 | 2.5 | 2.7 | 3.3 | 4.1 | 4.9 | 5.4 | 5.7 | 5.7 | 5.7 | 5.5 | 5.3 | 5.1 | 4.9 | 4.6 | 4.4 | 4.1 | 3.9 | 3.7 | 3.5 | 3.3 | 3.1 | 2.9 | 6.12 | 0.163 | |
| roof cts | number 32 | 32 | 2 | 2.4 | 4.4 | 6.2 | 6.9 | 6.8 | 6.4 | 6.1 | 5.7 | 5.3 | 5 | 4.7 | 4.4 | 4.1 | 3.9 | 3.6 | 3.4 | 3.2 | 3 | 2.8 | 2.6 | 2.5 | 2.3 | 2.2 | 3.17 | 0.315 | |
| roof cts | number 33 | 33 | 2.4 | 2.2 | 2.6 | 3.7 | 5 | 5.8 | 6.2 | 6.2 | 6.1 | 5.8 | 5.5 | 5.2 | 4.9 | 4.6 | 4.4 | 4.1 | 3.9 | 3.6 | 3.4 | 3.2 | 3 | 2.8 | 2.7 | 2.5 | 5.82 | 0.172 | |
| roof cts | number 34 | 34 | 2.6 | 2.6 | 3.4 | 4.7 | 5.5 | 5.8 | 5.8 | 5.7 | 5.5 | 5.3 | 5 | 4.8 | 4.6 | 4.4 | 4.2 | 4 | 3.8 | 3.6 | 3.5 | 3.3 | 3.2 | 3 | 2.9 | 2.8 | 3.2 | 0.312 | |
| roof cts | number 35 | 35 | 2.9 | 2.8 | 2.8 | 3.3 | 4.1 | 4.8 | 5.3 | 5.5 | 5.5 | 5.5 | 5.3 | 5.1 | 4.9 | 4.7 | 4.5 | 4.3 | 4.2 | 4 | 3.8 | 3.6 | 3.5 | 3.3 | 3.2 | 3 | 5.85 | 0.171 | |
| roof cts | number 36 | 36 | 1.4 | 3.2 | 6.9 | 8.3 | 8.1 | 7.5 | 6.9 | 6.3 | 5.8 | 5.3 | 4.8 | 4.4 | 4 | 3.7 | 3.4 | 3.1 | 2.8 | 2.6 | 2.4 | 2.2 | 2 | 1.8 | 1.6 | 1.5 | 4.18 | 0.239 | |
| roof cts | number 37 | 37 | 1.5 | 2.1 | 5.1 | 7.5 | 8.1 | 7.7 | 7.2 | 6.6 | 6.1 | 5.5 | 5.1 | 4.6 | 4.3 | 3.9 | 3.6 | 3.3 | 3 | 2.7 | 2.5 | 2.3 | 2.1 | 1.9 | 1.8 | 1.6 | 7.53 | 0.133 |
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