Tuition Savings by Going
Green?
By: Jason Wade
Va Vang
Jeremy Clark
Sara Lawhorn
Ryan Penn
Sam Ledbetter
Introduction
Energy efficiency could lead to tuition
savings for the students at NWACC?
Project Overview
• To find new ways for the
college and the
surrounding community
to save energy by going
green.
• To inform the
community about the
advantages of being
more energy efficient as
a community.
Our Solution
• How do we plan to do so? First, research what would go
in to making the college green.
• Next, we would show what would be the costs to make
the college green and how we could show that idea.
• Then, the next step would deign a model of where the
green ideas would go into place on the campus.
• The final step, would be to show how much of an effect
that the steps to go green would have added value to the
college campus and the surrounding environment.
Expected Outcome
Our research will lead to
a better understanding of
the savings an energy
efficient campus will
generate for the entire
NWACC community.
Green in the News
Ideas of Saving Money While
Going Green
• LED Lighting
• Water-free Urinals
• Reusable Energy
L.E.D Lights
• Currently, Northwest Arkansas Community College spends about $456,
737 a year on electricity.
• LED lighting is a great way to illustrate the benefits in energy savings,
maintenance costs, and the environmental impacts by going green at
NWACC.
• As a group, we feel the college can make vast improvements on saving
money by switching to LED lighting for the classrooms. A recent study
was done by Cree Inc., a manufacturer of LED lighting components,
showed the total savings from using a CC vivid 2 watt LED light bulb over
an incandescent 60 watt light bulb.
L.E.D Lights
•
One of the key advantages of LED-based lighting is its high efficiency, as measured
by its light output per unit power input.
•
Most typical LED’s are designed to operate with no more than 30-60 milli-watts of
electrical power.
•
Light Emitting Diode bulbs have been estimated to use 48 % less energy then the
bulbs used in our classrooms.
•
LED’s produce more light per watt then incandescent bulbs; which is very valuable
to saving energy.
•
LED’s are ideal for use in applications that are subject to frequent on-off cycling,
unlike fluorescent lamps that burn out much quicker when cycled on and off.
•
After 60,000 hours of use, the total cost from an incandescent 60 watt light bulb
was $400.20, compared to the $46.95 of total cost from using the LED light bulb.
Cree Inc’s study has shown a difference in price of 88 % over 60,000 hours of use.
Though it is hard to estimate how much NWACC would save by converting to LED
lights, it’s not hard to see that the savings would be crucial.
Costs of LED
Water-free Urinals
• Because there is no need to install water supply pipes or flush valves, the
initial cost for Water-free Urinals is significantly less than flush models.
• Its estimated that 20 percent of all water used in a typical building is a
result of flush urinals.
• A single water free urinal from water free Technologies can save an
average of 40,000 gallons of water every year .
• Water-free Urinals can help reduce maintenance costs and workloads.
Harsh chemical cleaners become unnecessary. Daily or as needed cleaning
of the Water-free urinal is the same as standard urinals. Clean up is simple
using any standard mildly acidic cleaner and a quick wipe.
• No rim holes or mineral deposits to worry about, just a smooth dry surface.
• Conventional urinals with wet surfaces can be become a breeding ground
for bacterial growth and odors.
Water-free Urinals
According to a research study evaluating Los Angeles' water supply,
the amount of water that could be saved by adopting the new waterfree technology could easily approach three-quarters of a billion to a
billion gallons annually.
3.5 (to compare to older units) shows a savings of 9,600 to 24,500
gallons of water per cartridge.
The table on the next slide gives three examples that illustrate how
the Water free urinal system generates savings. All assumptions are
based on conservative estimates of annual usage, water and sewer
rates, and valve replacement/repair costs. Also note that special time
payment and rental programs can result in zero-cost or immediate
payback installations, since savings are often greater than monthly
payments.
Water Free Urinals
A
B
C
1,500
3,000
15,000
Percentage of males in population
55%
50%
50%
Number of males
825
1,500
7,500
Number of urinals
33
60
185
Number of uses per day/person
3
3
Gallons per flush for old urinals
3
SAVINGS ANALYSIS ASSUMPTIONS
Total facility population
Water cost per 1,000 gallons
$2.50
$3.00
$3.50
Sewer cost per 1,000 gallons
$2.50
$3.00
$3.50
260
300
365
Operating days
ANNUAL WATER
SAVINGS
(3 uses/day x operating days x number
of users x water cost)
Gallons
1,930,50
0
2
1700,000
8,212,500
Dollars
$4,826
$8,100
$28,744
Waterfree Urinals
ANNUAL SEWER
SAVINGS
3 uses/day x operating days x number of users x sewer cost)
Gallons
1,930,500
2,700,000
Dollars
$4,826
$8,100
8,212,500
$28,744
ANNUAL OPERATING COST COMPARISON
Flush urinal: Maintenance/valve repair ($75 average
per urinal)
$4,500
$2,475
$13,875
$5,850
Falcon: Replacement cartridges
$3,218
$29,250
The rain collection in
the red harvests the
rain water for the
irrigation and the
sprinkler system at
Sam’s Club. This
would be good for
NWACC to use for
watering the plants in
the green house.
Sketch Up Movies
water flow
All the excess water
would run off into the big
silver drums for use when
needed.
Sketch Up Design
Costs
Burn
s Hall
Student
Center
Shewmaker
WCC
Adult Ed.
Physical
Plant
Annual Electric
7,068
227,8
30
139,509
61,610
7,879
12,841
Average Monthly
589
18,98
5
11,626
5,134
323
1,070
26,11
5
27,012
7,749
325
1,706
6,039
2,176
2,251
645
14
142
503
Annual Water
Average Monthly
Total Costs for all
Buildings
Annual Electric
Parking Deck
456,737
Annual Electric
Average Monthly
37,727
Annual Water
68,946
Average Monthly
5,731
Average
Monthly
40,386
3,366
Skills Developed
• Networking for life in the real world work force.
• Time Management - to know how to take the intuitive to
complete a task
• Awareness of individual responsibility in a community –
gain knowledge that will lead the future in making the
planet a better place for us all to live.
• Problem solving as a team
Future of the Project
• Any EAST group could continue our
project by adding pictures of the school by
using Picasa (Google software)
• Use Revit or AutoCad software and
develop an animated walkthrough of the
campus.
Acknowledgements
• Sam’s Club, Fayetteville, AR
• Wal Mart
• Physical Plant, Gerry Weatherford
• C. Dianne Phillips, EAST/EMPACTs
Faciliator
• Melody Thomas, Instructor PHA