ABSTRACT
This chapter shows how the daylight inside a building is calculated from the exterior daylight climate described in Chapter 4. It begins by describing how illuminance can be calculated from daylight factors, showing the limitations of this approach and also the conditions in which the use of daylight factors is valuable. The chapter then shows how reflected sunlight can be analysed. It then considers some special cases – distant obstructions, trees and shiny façades – and concludes by discussing accuracy in daylight calculations and measurements.
