PowerPoint by Neuqua Valley High School presented at Illinois Innovation Talent Conference on April 11, 2011.

1. Neuqua Valley
Energy Reduction Challenge 2011

2. Meet the Problem
• Students were introduced
to the problem with letters
from ComEd and ARAMARK
district 204’s energy
management services.

3. The Problem
Neuqua Valley’s
Monthly Electric Bill
$50,380
per month

4. Understanding the Problem
• Process of listing what they already
knew and what needed to be
determined.
• Students created a statement to
reflect what their role was in the
process and what they wanted to
accomplish.

6. Community Partners
• ComEd: Mr. Mark Wizniak- senior Energy Specialist
• ARAMARK: Mr Mike Paperella- energy Manager Dist 204
• ARAMARK: Mr. Leonard Sharum- building manager
• OSRAM Sylvania: Ms Rose Lenchner-
Industrial/Commercial Senior Sales
• Neuqua Valley: Mr Mark Kolkman assistant principal-
operations

7. Energy Audit
• Survey conducted throughout the
building
• Students using ipads and journals,
documented how electrical energy
was being used in lighting and
motors

8. Energy Audit

9. Tools of the Audit
Light meter
Kill a watt meter Laser measuring tape

12. Post Audit
Identified areas of energy reduction
or energy inefficiency
Students organized themselves into
teams of 2 or 3 to attack one
identified area.
Students reported back findings and
created this presentation.

13. Identified Possible Opportunities
• Classroom lighting
• Bathrooms
• Weight room and Gym
• Computers
• Plug Loads
• Motors

14. Classroom Lighting
• Light level intensity measurements
indicated that each classroom was overlight
• The Advanced Energy Design Guide for K-12
School Buildings, developed by the
American Society of Heating, Refrigerating
and Air-Conditioning Engineers (ASHRAE)
recommends 30-70 footcandles of
illumination

15. Classroom lighting
• Light levels were measured to 60-70 foot-
candles when all the switches in the classroom
were on.

16. Classroom Lighting: Solution
• By ONLY turning on one switch, light
levels were still at 50 footcandles.
• Energy usage could be reduced by one
third in each classroom

17. Classroom Lighting
• Based on 60 T-8, 28Watt light bulbs
and roughly 110 classrooms.
• Operating for 12 hours a day and 177
days in the school year
• Projected savings:
131,000 KWhr @$0.10/KWhr
Savings of $13,000

18. Classroom Lighting
• Solution: Ad Campaign to educate
staff and students of the savings.
– Switch plate stickers, poster

19. Bathrooms
• Lights are on at least
18 hours/day
• Bathrooms are only
occupied a total of 4
hours/day

20. Current State
Location #bathrooms #bulbs Kw/bathroom
Aud. 4 20 0.560
Lobby
Hallways 10 12 0.336
Commons 2 21 0.588
Gym Hall 2 12 0.336
Total 18 266 7.448
Estimated hours of usage = 18 hours a day = 540 hours a
month

21. Current Usage
Location KWhr/bathroom
Auditorium Lobby 302
Hallways 181
Commons 318
Gym Hall 181
Total 983
Total Operating Cost $323.75

22. Proposed Savings with Motion Sensors
Location KWhr/bathroom
Auditorium Lobby 67
Hallways 40
Commons 71
Gym Hall 40
Total 218
Total Operating Cost $71.51
Estimated hours of usage = 4 hours a day
= 120 hours a month

23. Return on Investment
Initial Cost With Labor $6,473
Savings per month $252.25
# months to cover 25.66 months
Return on Investment 2.14 years

24. Weight Room
• Current lighting:
T-12
• Proposed
lighting: T-8

25. Cost Savings
40000
35000
Cumulative Cost 30000
25000
20000
T12
15000
T8
10000
5000
0
0 2 4 6 8 10 12
Years
Return on Investment reached at less than 5 years

26. Gym
• Current lighting: HID
• Proposed lighting: T-5
HID fixtures in Gym Proposed T5 fixture

27. Cost Savings
250000
200000
Cumulative Cost
150000
HID Retrofit
100000
T-5 H.O.
50000
0
0 2 4 6 8 10 12
Years
Return on Investment reached in just over 4 years

28. Computers
Currently 1100 computers in use
• 850 are old CRT type •250 are new LCD type
5.2W phantom load No phantom load
141W when on 89W when on

29. Current Configuration
850 Old Computers 250 New Computers
ON Phantom Load ON
(141W x 12hr + 5.2W x 12hrs) x850 + 89W x 10hrs x250
= 1714 KWhr/day x 177 days/school year
303,378 KWhr/year
Total cost at $0.10/KWhr $30,378

30. Current Computers with
Shutdown Software
850 Old 250 New computers
Computers Phantom Load
(141W x 10hrs + 5.2W x 14hrs) x850 + 89W x 10hrs
x250
=1482 KWhr/day x 177 days /school year
262,314 KWhr/year
Total cost at $0.10/KWhr $26,231

31. Solution: New Computers with
Shutdown Software
1100 New Computers
= 89W x 10 hrs x 1100 x 177 days/school year
173,283 KWhr/year
Total cost at $0.10/KWhr $17,328
Total Projected Energy Savings:
130,095 KWhr/year

32. Phantom Loads
• Electricity is used even when
electrical device is not in use

33. Phantom Loads KWhr Used / Cost Per
Item Number of Units Year Year
Survey of Electrical
TV 21 4200 551.88
Projector 7 3150 413.91
devices in Building
Printers 39 956 125.57
Fridge 7 5740 754.25
Microwaves 9 900 177.39
Total Phantom Load:
LCD computer 21 2100 551.88 21,318 KWhr/year
Smartboards 2 180 41.06
Dishwasher 1 170 5.58
VCR 1 40 7.88 Total cost
Freezer 1 790 51.9 @$0.10/KWhr
Overhead 1 3092 414.33
TV 21 4200 551.88
$2,132 /year
Projector 7 3150 413.91

34. Phantom Loads
• Out of TV, overhead, VCR and projector, just use
one, and get rid of the rest; projector seems the
most reasonable to use
• For fridges, freezers, microwaves, dishwashers, and
other appliances, purchase energy-efficient models
• Smart powerstrips
• For printers, scanners, and copy machines, buy
models where all are combined into one unit.
• Unplug
TV, overhead, VCR, projector, computers, scanners,
and copy machines when the school day ends.

35. Phantom Loads
• 30 % energy reduction
• Energy Savings of 6,396 KWhr/year
• Cost Savings: $639.60

36. Cafeteria Lighting
• About 100 lights total
• 87 CFLs
• 13 T-8 bulbs

37. Replace All with LEDs

38. Conclusion
• ROI/Year and initial cost not feasible
• Realistically, this solution is not
financially practical
• Better to leave the cafeteria as is
– CFL lights are the next best thing
CFL LED

39. The VariableFrequencyDrive

40. Overview
•Summary: The VariableFrequencyDrive, belonging to a class of
electric variable speed drives, acts as the brains of a motor
that converts electrical power, which is at a fixed voltage and
frequency, to variable voltage and frequency
•Purpose: To control the output speed of a motor by
consuming only the power that is needed. This reduces energy
usage by almost 2/3
VFD

41. Methods of Measurement
VS

42. Total Projected Energy Savings:
120,971 KWhr/ year

43. Summary
• Total energy savings for all feasible
solutions is 600,000 kwhr per year
• Once ROI year is reached…
• Savings is $60,000 per year OR
• $5,000 per month

44. Summary
Energy Equivalence Calculation Courtesy of SIEMENS
http://siemens.greentouchscreen.com/CO2eCalculator/