DOE estimates that $1 out of every $3 spent on HVAC in large commercial buildings is wasted. FlowEnergy's revolutionary SmartValve hardware optimizes the demand side with precision control, allowing customers to reduce energy usage and simultaneously improve comfort. This presentation is a case study for the incredible savings obtained at Arizona Western College.

1. Transform Campus Cooling with Real-Time Data & Smart Control Valves
IDEA Campus Energy | February 2016
THINK OUTSIDE THE PLANT

2. 40% of building energy is
used by comfort systems.
$1 out of every $3
spent is wasted.

3. Trouble cooling far end of campus
Lots of comfort complaints and manual adjustments
Using all three chillers in the summer months
High electricity consumption and inflated peak demand
No spare chilled water capacity to support campus expansion
Building a new central plant would be multimillion dollar project
ARIZONA WESTERN COLLEGE - HOW WE STARTED
Proprietary and Confidential

4. REDUCE THE COMFORT SYSTEM DEMAND
WITH SMART HARDWARE & ENERGY MANAGEMENT SOFTWARE
Campus Buildings Central Plant
Proprietary and Confidential

5. H C
or
C C
HOW IT’S ALL CONNECTED
Cloud Monitoring
View real-time and
historical energy
consumption data.
Weather Data
Outside conditions
temperature,
dewpoint, and
enthalpy.
Electricity Meters
Collect power
consumption at
each building.
SmartValves
Capture flow, ∆T,
BTUs, pressures,
temperature,
humidity.
H
T
T
T
T

6. SMART CONTROL VALVE PROVIDES STABILITY
WHICH LEADS TO ENERGY SAVINGS & IMPROVED COMFORT
0
5
10
15
20
25
30
35
3:15 PM 3:30 PM 3:45 PM 4:00 PM 4:15 PM
Flow[GPM]
Proprietary and Confidential

7. WHY STABILITY IS CRITICAL
COIL DEMAND DRIVES SYSTEM ENERGY
Proprietary and Confidential
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
Flow[GPM]
Leaving Air Temperature [˚F]
Typical
Behavior
Precise Control
Benefit

8. MAXIMIZE COOLING CAPACITY
BY ELIMINATING SUBCOOLING, REHEAT, OVERHEATING, & OVERVENTILATION
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
2,000,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Typical Performance
Real
Demand
Subcooling
Reheat
Overventilation
Overheating
Precision Control
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
2,000,000
Real
Demand
Regained
Capacity
Load
[Ton Hours]
Load
[Ton Hours]
Proprietary and Confidential

9. PRECISE TEMPERATURE CONTROL
MAINTAIN ± 0.1° COIL LEAVING AIR TEMPERATURE
54.9
55
55.1
55.2
55.3
55.4
7:40 AM 7:55 AM 8:10 AM 8:25 AM 8:40 AM
Design Actual
Entering Water Temp. 40.0 44.1
Leaving Water Temp. 55.0 63.3
Delta T 15.0 19.2
Flow 128.0 29.7
P1 20.0 50.6
∆ P1-P2 5.0 3.2
P3 10.0 23.5
∆ P1-P3 10.0 27.1
LeavingAirTemperature[˚F]
Proprietary and Confidential

10. REAL-TIME DATA ENHANCES OPTIMIZATION
MONITOR KEY METRICS – FLOW, LOAD, DELTA T, PRESSURE
Proprietary and Confidential

11. REAL-TIME DATA ENHANCES OPTIMIZATION
USE FOR EQUIPMENT DIAGNOSTICS & FAULT DETECTION
Proprietary and Confidential

12. CAMPUS ELECTRICITY USE BY MONTH
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
2,000,000 2013
2014
2015
ElectricityConsumption[kWh]
Start of
Installation
Proprietary and Confidential

13. 2,500,000 kWh annual electricity savings ($225,000/15%)
430 kW reduction in peak demand charge (15%)
$275,000 utility rebate (largest in county history)
Significant reduction in comfort complaints
Recovered 22% of system cooling capacity
Added three new buildings to chilled water system
RESULTS @ ARIZONA WESTERN COLLEGE
Proprietary and Confidential

14. THANK YOU.
jeff.creighton@flowenergy.com
furqan.mohiuddin@flowenergy.com