The importance of interior daylight distribution in buidlings on overall energy performance

摘要

Simulations of daylight distribution within a house show that there can be significant visual discomfort associated with specific sky conditions. Thermal models of the same building, which include simplified daylight calculations and which calculate annual energy performance of the buiding, do not reflect ectreme visual discomfort and high thermal load associated with these sky conditions. These results illustrate the importance of more detailed interior daylight distribtuon calculations in assessing the thermal and visual comfort of a building, and in ddeveloping energy performance ratings for buildings. Some techniques for incorporating more detailed interior daylight distribution calculations in simplified thermal models are discussed.