Advanced Energy Engineering Technology Modeling Building Energy Systems Session 7: Lighting and daylighting

Topics covered in this class session: Windows as a source of light Daylighting strategies Artificial lighting and fixtures

Windows as a source of light Solar properties of windows Window placement Window shading strategies

Daylighting strategies Clerestories and windows dedicated as light sources Light shelves Skylighting options and technologies Lighting and daylighting-interactive control systems

Artificial lighting and fixtures Task-based lighting design to increase efficiency Efficient fixtures and lighting technologies (lamps and ballasts) Automatic controls vs. user controls for lighting

Impact of windows and lighting on other building systems Effect of window area and location on heating and cooling systems Effect of increased lighting efficiency on heating and cooling systems

Lab 2: On-site visit to project buildings – Instructor’s presentation (30 min) – eQuest has default data that can be used if nothing else is available What are the most fundamental data elements needed for a simple energy model? (Instructor should distribute this list to the teams) – Building type, size, shape, and orientation – Location – weather – Envelope thermal properties – Operational schedules – Human occupancy – Lighting, plug, and miscellaneous loads – HVAC system types – Utility rate structures

Lab continued from last slide Requirements for documentation of this information at the site, and coordinating with building owner to obtain additional information needed – Lab activities First site visit—student teams adjourn to their respective buildings and meet owners/managers – Assess site and orientation data – Confirm or edit what is on drawings for HVAC and envelope