Transcript My Summer Project: Measuring Chilled Water Needs for Winter Cooling on Campus By Scott Womer, Engineering Intern College of Engineering, Class of ‘15 My Odyssey.

My Summer Project:
Measuring Chilled Water Needs for
Winter Cooling on Campus
By Scott Womer, Engineering Intern
College of Engineering, Class of ‘15
My Odyssey al La Plant
Technology Trash Recycler
Compost Hauler
Engineering Intern
Winter Cooling Summer Project Idea
Buildings on campus attached to
chilled water require winter
cooling.
As of now most use air and
domestic water for cooling.
Is there a way we can use our
chilled water to more effectively
provide this cooling
Join the
Physical plant,
go exotic
places find
interesting
equipment and
record the
information
Coolers/Cold Rooms
Server Rooms
Growth Chambers
Freezer Rooms
Have all the info but how are we going to
quantify the loads and chilled water required?
…(stay with me, here’s where it gets “science-y”)
Energy Produced
HIGH HEAT
LOW HEAT
Reverse…Cool Mike and Take heat
HIGH HEAT
LOW HEAT


Cool in Different Ways
Air Cooled
Water Cooled
Heat Conduction Difference
Air Conduction = .025
Water = .563
Water 25 times better than
“conducting” heat than air
Quantify?
Total Thermal Energy = Thermal Loss * Amount of Stuff Losing it
Q
= (Tin – Tout) *(Gallon/min)(500)
Temperature DROP & GPM
I got to use a……
Temperature…Laser
then I’m asked to…
“Find out how fast the flow goes?”
• Use a Flow Meter (best and
easiest method)
• Manual (“a pail and a stopwatch”)
• Guess (using standards and
equipment specs)
When there were no flow meters…
Liters/Second  GPM
Liters Per Second converted
into Gallons Per Minute
….but then people wondered what the student
intern was doing in the closet all day….
Organized the Information in Shared folder
…and massive Excel file
Chilled Water GPM
• GPM for known loads already entered
into spreadsheet.
• All information and equations are ready
for when the unknown GPM is known
Auto-Cad Cooling Details
Major Opportunity and Solution Example
Davis Center
Jeffords Hall
Davis Center
Proper Controls
Set in place
Rooftop Condenser to
Outside Air
Davis GPM & Temperature Trending
Trending of GPM
and Temp show
maximum and
minimum
demands on loop
Davis Center results
GPM of Food Loop MAX = 22
Max Temperature Drop = 12 F
Max HEAT = 121,000 BTU/hr
GPM Required Chilled
Water = 15.37
More Buildings Ready and More to Come
MUCH Thanks to these PPD staff:
Mike Pelletier
Russ Charron
Dave Blatchly
Scott O’Brien
Matt Malloy
Randall Reynolds
Erica Spiegel
Corey Berman
Former Intern: Shaun Connelly