Cooling Load Factors: lighting power density
lpd 041 to lpd 050
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 | lpd W per m2 (W/m2) | space type |
|---|---|---|---|
| lighting power density | lpd 041 | 10.5 | Conference/Meeting/Multipurpose |
| lighting power density | lpd 042 | 13.4 | High-bay area |
| lighting power density | lpd 043 | 7.5 | Confinement Cells |
| lighting power density | lpd 044 | 6.8 | All other restrooms |
| lighting power density | lpd 045 | 9.3 | Low-bay area |
| lighting power density | lpd 046 | 3.3 | Copy/Print Room |
| lighting power density | lpd 047 | 11.3 | Sales Areaᵈ |
| lighting power density | lpd 048 | 7.7 | Facility for visually impaired (and |
| lighting power density | lpd 049 | 3.3 | General exhibition area |
| lighting power density | lpd 050 | 11.9 | Restoration room |
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