Impact of fenestration on energy use and peak loads in daylighted commercial buildings
Effective utilization of daylight is one of several design strategies that promise to provide substantial energy savings for commercial buildings. Despite the revived interest in the field, there are very few occupied buildings for which performance data verify the magnitude and cause of real savings. In order to optimize costs it is first necessary to understand building performance data in sufficient detail to assess the contradictory component impacts. This can be done most effectively using an hour-by-hour energy analysis model, in this case DOE-2.1B. This paper reports conclusions of an extensive series of computer analyses in two climates to determine the energy use and demand impacts of fenestration in commercial buildings. Particular attention is paid to the tradeoffs involved in using fenestration to daylight perimeter zones. The study includes the effects of climate, orientation, window area, U-value, shading coefficient, visible transmittance, lighting power density, and lighting control strategy.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5248643
- Report Number(s):
- LBL-15889; CONF-830929-11; ON: DE84006057
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140900* -- Solar Thermal Utilization
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320104 -- Energy Conservation
Consumption
& Utilization-- Commercial & Industrial Buildings-- (-1987)
BUILDINGS
CLIMATES
COMMERCIAL BUILDINGS
DAYLIGHTING
DEMAND
ENERGY ANALYSIS
ENERGY CONSUMPTION
ENERGY DEMAND
OPENINGS
ORIENTATION
PERFORMANCE
SHADING
U VALUES
WINDOWS