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
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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
Original Design
Original Design
Original Design
Original Design
New Design- Suspended
• New design features 15 suspended fluorescent
fixtures with a drop ceiling
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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- Suspended
New Design- Suspended
New Design- Suspended
New Design- Suspended
New Design- Suspended
New Design- Suspended
New Design- Suspended
New Design- Suspended
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
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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- Recessed
New Design- Recessed
New Design- Recessed
New Design- Recessed
New Design- Recessed
New Design- Recessed
New Design- Recessed
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
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63W/ fixture * 15 fixtures= 945 W
Power factor = 0.99
945W / 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.