The School of Forest Resources Building Aquaculture Lab Lighting Layouts Chris Hoyman Dr. Mistrick, Faculty Advisor February 3, 2006

Overview The first space chosen for redesign was the Aquaculture Lab located in the basement. An analysis of the general room lighting was performed. Lights in the individual tanks are controlled centrally from a dimming panel with a day/night cycle setting.

Overview The original design, pictured here, used suspended linear fluorescent downlight fixtures, with no drop ceiling. For the redesign, I applied two new systems along with a drop ceiling.

Overview In applying the drop ceiling, I hope to create a brighter, more uniform looking space. Hiding the currently exposed piping will give the room a cleaner look as well. With the increased reflectance off the drop ceiling tiles it may be possible to reduce the overall number of fixtures in the room (saving on fixture and energy costs).

Original Design Original design featured 18 suspended fluorescent fixtures –Two 32W T8 bulbs each –59W Input for two lamp ballast, 18 total –1062W total over an are of 760 sq. ft. –Power Density = 1.4 sq. ft.

Original Design

New Design- Suspended New design features 15 suspended fluorescent fixtures with a drop ceiling –Two 28W T5 bulbs each –63W Input for two lamp ballast, 15 total –945W total over an are of 760 sq. ft. –Power Density = 1.24 sq. ft.

New Design- Suspended

New design useless less energy, fewer fixtures, has lower Avg./Min. and Max./Min. ratios, and creates a more comfortable space.

New Design- Recessed New design features 15 recessed fluorescent fixtures with a drop ceiling –One 54W T5 bulb each –62W Input for one lamp ballast, 15 total –930W total over an are of 760 sq. ft. –Power Density = 1.22 sq. ft.

New Design- Recessed

New design useless less energy, fewer fixtures, has lower Avg./Min. and Max./Min. ratios, and creates a more comfortable space.

New Design Both new designs performed better than the existing, however the suspended system yields higher illumination and better uniformity for only a small increase in power density. The suspended system with the drop ceiling was chosen for the final design.

Light Loss Factors LDD- suspended- Category II, very clean environment, 12 month cycle, LDD=0.97 LDD- recessed- Category IV, very clean environment, 12 month cycle, LDD=0.94 LLD- suspended- 2697/2900=0.93 LLD- recessed- 4650/5000=0.93

Light Loss Factors RSDD-suspended- 7% expected dirt depreciation, Direct/Indirect, RCR= 3.1 (H=8’), RSDD= 0.94 from table RSDD-recessed- 7% expected dirt depreciation, Direct, RCR= 3.9 (H=10’), RSDD= 0.97 from table

Suspended System- Circuits 63W/ fixture * 15 fixtures= 945 W Power factor = W / 0.99 pf = 955 VA 955 VA / 277V = 3.45 A 16A limit, only one circuit needed

Suspended System- Switching General lighting in the room is for the occupants only, during observation and experiments. Dimming on this lighting is not required. For some flexibility of light levels, and potential energy savings, each row of lights (in the longer direction) will be switched together. In this manner the two outer rows could be on leaving the middle row off if desired (see next slide).

Suspended System-Switching

Notes This space is not going to be one of the photo quality rendering spaces I complete for the final submission All AGI files, cutsheets, and assorted information are available on my P Drive, under thesis/aquaculture.