Shading effect analysis:-
u The comparison of the energy performance between the two
schemes (i.e., assuming with and without day lighting)
u Daylight admitted through the building envelope offers
an opportunity to significantly reduce lighting requirements and, to lesser
extent, cooling loads
u To neglect the shading effect due to surrounding
buildings (i.e., no sky obstruction). Without external obstruction, the
reference-building facade will be able to receive natural light from the half
of the sky hemisphere, contributing to large electric-lighting and
total-building energy savings when dimming controls are used.
u To facilitate an understanding of the shading effects,
the obstructed areas of nearby buildings are often changed para metrically in computer simulations.
Regression techniques are then used to study the
shading effects due to external
obstructions on the
building’s energy-consumption for the whole generic reference building as well as individual floors
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