Commercial-building daylighting

Conference · Tue Jun 01 04:00:00 EDT 1982

OSTI ID:5268964

Place, W; Fontoynont, M; Kammerud, R; Bauman, F; Andersson, B; Howard, T C

An investigation has been made of potential lighting electricity reductions and associated thermal impacts of replacing electric light with sunlight admitted through rooftop glazing on a single-story, prototypical commercial building. Experimental scale models have been used to determine the fraction of the solar radiation entering the aperture which reaches the work plane as useful illumination. This information is used in a developmental version of the building energy analysis computer program BLAST-3.0 to predict reductions in lighting electricity and the impacts on energy consumption for heating and cooling the building. It is found in general that the lighting electricity reductions are more significant than the heating and cooling impacts in a properly designed system. In an improperly designed daylighting system, where reduction of lighting electricity is the only design criterion, deleterious thermal impacts can negate the lighting electricity benefits.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5268964
• Report Number(s): LBL-14348; CONF-820819-11; ON: DE82018806
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320104* -- Energy Conservation
Consumption
& Utilization-- Commercial & Industrial Buildings-- (-1987)
B CODES
BUILDINGS
COMMERCIAL BUILDINGS
COMPUTER CODES
COOLING LOAD
DAYLIGHTING
ENERGY CONSUMPTION
HEAT GAIN
HEATING LOAD
POWER DEMAND
SKYLIGHTS