Cooling Load Factors: lighting power density
lpd 051 to lpd 060
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 051 | 7.7 | Hospital |
| lighting power density | lpd 052 | 4.4 | Performing Arts Theater, Dressing Room |
| lighting power density | lpd 053 | 4.4 | All other corridors |
| lighting power density | lpd 054 | 5.3 | Stairwell |
| lighting power density | lpd 055 | 12.9 | Courtroom |
| lighting power density | lpd 056 | 8.1 | Post Office, Sorting Area |
| lighting power density | lpd 057 | 10.1 | Computer Room |
| lighting power density | lpd 058 | 5.5 | <4.6 m² |
| lighting power density | lpd 059 | 4.1 | >4.6 m² |
| lighting power density | lpd 060 | 5.8 | Fellowship hall |
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