Extending the graphic daylighting design method to the clear sky condition
The Graphic Daylighting Design Method (GDDM) developed by Millet and Bedrick for overcast sky conditions is being extended to include a clear sky daylighting prediction capability, which will allow the method to be used in conjunction with passive solar design techniques. The core of the method for each of the two design conditions is a set of patterns, or footprints, which portray illumination distribution over the workplane for a variety of window configurations. Like the overcast sky design method, this clear sky method is useful for the designer at the schematic design stage, because it allows rapid evaluation of many different window configurations at a time before the building design is finalized. Both the clear and overcast design methods are useful aids for the teaching of daylighting, because they incorporate visual representations of what is occurring in a room in terms of level of illumination, distribution of light on the workplane, and movement of light across the workplane throughout the day. The effects of clear sky variables on light quantities and light distribution on the workplane are described, and the development and use of the clear sky footprint are explained.
- OSTI ID:
- 6403423
- Report Number(s):
- CONF-800604-P3
- Journal Information:
- Proc. Annu. Meet. - Am. Sect. Int. Sol. Energy Soc.; (United States), Journal Name: Proc. Annu. Meet. - Am. Sect. Int. Sol. Energy Soc.; (United States) Vol. 3.2; ISSN PMSID
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140901 -- Solar Thermal Utilization-- Space Heating & Cooling
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
BUILDINGS
CALCULATION METHODS
DAYLIGHTING
DESIGN
ENERGY SYSTEMS
EQUIPMENT
HEATING SYSTEMS
OPENINGS
PASSIVE SOLAR COOLING SYSTEMS
PASSIVE SOLAR HEATING SYSTEMS
SHADING
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
WINDOWS