2. Chapter 2 Lighting Environments

3. Daylight Integration and Control Advantages of daylight and windows: –Psychological & biological well-being –Constant and standard light –Passive solar energy penetration in the winter –Ventilation with non-fixed windows –View of the outdoors –Reduction in electrical lights –Enhances visual acuity 2

4. Daylight Integration and Control Disadvantages of direct light and windows: –Fading and deterioration of fabrics and artwork –Cracking and peeling of woods and paints –Glare –Increased heat in the summer –Black holes at night 3

5. Site Orientation Southern exposure: –Various intensities and colors –Can fade and deteriorate materials Northern exposure: –Even intensity and spectographic characteristics East/West exposure: –Low, variable sun angles = glare 4

7. Sunlight vs. Daylight

8. Sunlit sky vs. day-lit sky

9. Sunlight penetration changes during the year

10. Urban sites can have lots of reflected light

11. Window Apertures: shape and location Horizontal shapes Vertical shapes Consider reflected light Transoms Skylights 10

26. Light pipes

30. Room shape

33. Light shelf principles

34. Skylight with integral HVAC return system

35. Interior Surfaces Ceilings: matte finish, light color Chamfer to reflect daylight Floors and walls opposite windows can reflect daylight 34

37. Windows and Tasks Locate work areas parallel to windows Windows placed left of right-handed people; and vice versa Equipment and technology located out of direct sunlight Best lighting for a lab? 36

38. Tune into the next lecture for the exciting conclusion of this chapter