Application of Perez Daylight Efficacy Model for Kolkata

The availability of daylight on any plane of a building and the passive heat gain due to the corresponding incident solar radiation is correlated by daylight luminous efficacy

Debashis Raul

2014

Scholarcy highlights

  • The availability of daylight on any plane of a building and the passive heat gain due to the corresponding incident solar radiation is correlated by daylight luminous efficacy
  • The analytical model was selected according to the sky conditions throughout the year
  • The predicted global and diffuse illuminance was validated with the measured illuminance values using standard statistical tools
  • It has been found that diffuse luminous efficacy varies from 114–138 lm/W whereas global luminous efficacy varies from 98–112 lm/W in a year
  • It is observed that sky clearness index and diffuse irradiance ratio have significant effect on the variations of luminous efficacy in different seasons

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