4-Year Private Liberal Arts College: Founded 1857
1,455 Undergraduate Students
13,000 acre Domain atop the Cumberland Plateau in southern
middle Tennessee
About 100 Buildings totaling 1,300,000 square feet
Cool Fact: we have more plant species on the Domain than there are
in Great Britain
Simple: low-cost/operational
Behavioral
Complex/capital-requiring (esp. HVAC)
The bad news is that only one of the first
group of interns had ever even taken a
physics class!

Very high efficiency chilled water plant which serves
central campus air conditioning featuring very low
(0.54)kw/ton centrifugal chillers; variable secondary
chilled water flow; and most-open-valve control of chilled
water flow to air handling units.

Very high efficiency condensing hot water boilers and
domestic water heaters in many locations

Lighting retrofits for virtually all fixtures on campus: T12
to T8 fluorescents; electronic ballasts; compact
fluorescents; LED exit lights; high-pressure sodium
outdoor lights; some LED pilot installations. Motion
sensors and photocells used extensively to control lighting

Low-flow shower heads throughout all residence halls

Low-flow toilets in most buildings

Front-loading clothes washers in all residence halls
Utility bills --- consumption and demand
Basics of energy, power, work
Electric circuits
Combustion
Lighting basics
Heat transfer
HVAC: peak loads, weather and part loads,
psychrometrics, comfort, refrigeration systems, air
and water distribution, control methods
Energy Conservation Measures (ECMs)
ECM SUMMARY
ENERGY CONSERVATION MEASURE
SHUT OFF REFRIGERATION CASES AND ICE MACHINE IN PUB DURING BREAKS
ELIMINATE ELECTRIC RESISTANCE HEATERS
CHANGE SPACE TEMPERATURES TO 76/68 DURING OCCUPANCY
ADD OVERRIDE SWITCH AND INCREASE SETBACK PERIODS
ADD VARIABLE SPEED DRIVE TO REDUCE PEAK CFM OF AHU FAN
ADD TIMER FOR GRIDDLE EXHAUST FAN
CONVERT REMAINING T12s/MAG BALLASTS TO T8/ELECTRONIC BALLASTS
CONVERT REMAINING INCANDESCENTS/HALOGENS TO LEDs
COST
$0
$0
$0
$300
$2,000
$200
$1,158
$1,650
$5,308
ANNUAL
KWH
COST
SAVINGS
SAVINGS
14,987
$1,349
6,000
$540
10,848
$976
39,762
$3,579
16,509
$1,486
980
$88
9,449
$850
4,685
$422
103,220
$9,290
SIMPLE
PAYBACK
YEARS
IMMED
IMMED
IMMED
0.1
1.3
2.3
1.4
3.9
0.6