( From the Physical Plant Division of the University of Florida
www.ppd. ufl. edu
We create and maintain facilities for the university community.
Chiller Replacement Helps Keep UF Cool
Summertime heat in Florida can be brutal
without air conditioning to cool you off on espe-
cially sweltering days. The campus of the Uni-
versity of Florida requires a constant supply of
cold air throughout the entire year, and especially
during the summer months. Physical Plant's
Systems Department has taken advantage of the
colder part of the year (and accompanying down-
swing in A/C usage) to upgrade the campus'
cooling power for the coming heat wave.
The major source for UF's air-conditioning
needs are the chilled water plants on campus,
eight in all. Each plant contains large machines
called chillers and cooling towers, which remove
heat from water using a refrigerant. The chilled
water is then pumped across campus through
chilled water lines into the buildings, and from This 3000 ton chiller was recently installed in Chiller
there into air handling units. The air handling units Plant II, off Mowry Road.
contain coils which allow the chilled water to
flow through; fans behind the coils blow the cool air coming off the coils through ducts and into rooms to bring the air
temperature down as neces-
sary. Finally, after the chilled
Still Life With water has run its course
Crane And Tree through the air handlers
within campus buildings, it
SA crane operator is returned back to the chiller
airlifts a windmill palm
tree towards its future plants. It is then pumped
home just outside te back through the chiller, and
front doors of the Harn the process begins again.
Museum. Meanwhile, the cooling tow-
The tree was one of ers dissipate the heat on a
three replacement separate circuit.
palms recently in- "Chillers have about a
stalledbyPPD's twenty-year lifespan," said
Grounds Department at Maintenance and Construc-
the Ham. Grounds tion Superintendent Lacy
worked with students Rabon of PPD's Systems
in UF's Environmental Department. "This fall, win-
Horticulture program ter and early spring, we've
during the procedure. replaced or are replacing five
Story on Page 3. units across campus, includ-
See CHILLER Cont
On Pg. 3
VOLUME XX, No. 4
Exhibit Illustrates PPD's Involvement With Campus Museum
The Florida Museum of Natural History, formally established on the University of Florida campus in 1917, is an
excellent public resource for observation and education on natu- ral resources, pre-historic archeology, and hu-
man cultural heritage. Visitors to the museum can
browse many fascinating, intricate exhibits deal-
ing with a wide range of subjects. Much work
goes on behind the scenes of these exhibits in
order to keep the museum in top working order,
and Physical Plant's HVAC Department is one of
the biggest contributors to keeping things run-
Maintenance Specialist Tim Noland said, "The
museum is a critical building for temperature con-
trol there are so many artifacts there that have
to be preserved in specific ways."
'We have such a high range of climate sensi-
tivity here," said Charlene Smith, Office Man-
ager at the museum. "Every exhibit is unique -
for example, we have historic objects made of
wood in some locations, and the humidity must
be kept higher in those areas to help preserve the
wood. Conversely, other exhibits contain metal
objects, such as ancient swords or axes, and these
areas have to have lower humidity levels in order
to keep the metals from rusting."
Besides its regular fixed exhibits, the museum
routinely brings in "traveling" exhibits for limited
Maintenance Specialist Tim Noland in front of the chocolate periods of time. These exhibits are usually rented
exhibit which he helped bring to UF from other museums around the country, and fre-
quently carry stringent requirements as to climate
control. A recent traveling exhibit detailing the history of chocolate serves as a good example of the meticulous work that
Physical Plant puts into helping maintain such displays.
"This particular exhibit came to us from the Field Museum of Chicago," said Tom Kyne, FMNH Traveling Exhibits
Coordinator. "In order for us to be able to host the exhibit, the Field Museum required that we submit extensive proof that
our museum had the necessary climate controls and humidity range to
keep the exhibit in good condition."
Tim Noland added, "I monitored the temperature and humidity very -
closely in the hall where the chocolate exhibit was to be displayed for
over a year before we were approved to display it. I submitted these
results to the museum staff in report form, and they forwarded the
reports to the Field Museum. Also, in order to make sure the building's
systems were up to the task, we upgraded several humidifier units.
Finally, after the exhibit arrived, I did weekly climate evaluations, keep-
ing close watch on any fluctuations or situations that might arise."
"Tim has really been a great help to us over the years that I have
been here," said Smith. "He responds immediately to our calls, can
troubleshoot virtually any problem we might have, and always provides
friendly, pleasant service."
"With the museum being such an important building in terms of
climate control, it's a big responsibility for our department, and one that
I feel we handle well," said Noland. "They rely heavily on us to make
sure that space is environmentally ready for these exhibits not just Tim points out one of the new humidifi-
certain halls, but the entire building." ers installed in the museum's upstairs
For his efforts in helping to acquire and maintain the chocolate mechanical room. The humidifiers help
exhibit, Tim was nominated for a Superior Accomplishment Award. keep humidity constant in the building.
1 Director: Dave O'Brien
PPD Works With Students On Tree Removal
Physical Plant performs many services to the University community, most of which are designed to go un-noticed.
However, from time to time PPD departments have the chance to interact with staff or students in a more visible manner.
One such instance of this was the recent removal and replacement of several dying windmill palm trees in front of the
Ham Museum, in which PPD collaborated with UF's Department of Environmental Horticulture and gave students some
"hands-on" experience in landscaping.
Landskeeping/Groundskeeping Supt. Marty Werts said, "We had two dead palm trees there and one that was stressed
really badly, and we wanted to remove them and get that situation taken care of. At the same time, (Ham Museum
Director) Rachel Nagy had talked to some people from the Department of Environmental Horticulture and they wanted to
use this opportunity to give a couple of their classes a chance to get some real world experience with this type of
"Our department head, Dr. Terrill Nell, came to myself and Dr. Ed Gillman," said David Sandrock., Asst. Professor
at Environmental Horticulture. "He told us the situation with the palms at the Ham and that Rachel Nagy had discussed it
with him, and asked if we could look at it and evaluate its potential for a case study involving my Landscape/Turfgrass
Management class and Ed's Arborculture class. After we decided we were interested, we got together with Marty and
outlined how we'd like to be involved in the project. PPD had already scheduled the trees for replacement, but they were
very receptive to working with us and allowing us to get the students involved."
The professors had their classes evaluate the site and draw up their plans for the way the situation should be handled.
The students then attended the actual tree replacement, performed by Physical Plant's Grounds Department, and Werts
talked to the class and answered questions regarding the procedure. Sandrock and Gillman also plan to have their students
monitor and observe the site and offer their input on how the trees should be managed over time.
"We really wanted to be able to keep the windmill palms out front, because they complement the architecture of the
museum very well," said Nagy. "We're very excited that PPD and Environmental Horticulture were able to help, and the
front of the museum looks so much better."
CHILLERS Cont. From Pg. 1
ing a 3000 ton Trane Duplex chiller at Chiller Plant II (west of Shands Hospital on Mowry Road). That's the largest chiller
we've ever had to replace during my time here the average chiller capacity on campus is about 1200 tons. Every chiller
we've replaced is being replaced with a larger
unit to increase our capacity. This campus keeps
expanding all the time, and as new buildings come
online we need to be able to stay ahead of the
curve in meeting their heat and A/C needs, and
increasing our chiller capacity allows us to do
Rabon, who oversees the operation of all UF's
chiller plants, said that while the replacement pe-
riod somewhat limits the cooling capacities of the
respective plants, PPD's consumers will not no-
tice any interruption in their air conditioning ser-
vice. "We planned this operation for the months
when our heat and air conditioning load is the
lightest," he said. "We don't plan to have any in-
terruptions in service even with the replacements
going on in the event of an emergency or spike
in A/C usage, most of our chiller plants are inter-
The chilled water pipes running from the chiller are insulated connected, and we can open a few valves here
with a foam/glass hybrid material, and then wrapped with an and there and even out the load."
aluminum casing, to prevent energy loss and "sweating" The list of replacement chillers includes three
from the pipes. new chillers at Chiller Plant II, including the giant
Trane chiller; a new chiller at the Southwest plant
(serving the Ham Museum area); and a new chiller is set to be installed at the Weil Hall Plant at the beginning of April.
"With these new, larger chillers, our cooling capacity is better than ever," said Rabon. "Our customers can look
forward to another summer at UF with ice cold air conditioning at their fingertips anytime they need it."
Ralph Giro, Assistant Director of Systems, added, "These replacement chillers are more efficient and environmen-
tally friendly than their predecessors, which supports the University of Florida's efforts to become a global leader in
Editor: Jeremiah AMcnnis
Physical Plant Division
PO Box 117700
Gainesville, FL 32611-7700
PPD Handles Speed Limit Sign Installation
Physical Plant has been hard
at work replacing the old
speed limit signs on campus with newer, easier to read signs. PPD Sign Shop employ-
ees Chris Roberts and Jim Tremplar have removed twenty-five old signs and installed
new ones in their place. Here, they take you through removal and installation of a sign
near the entrance to campus at Center Drive and Archer Road.
(1) Chris (left) and Jim break the old sign loose from its posts. (2) Using a 2000 pound winch attached to their
work truck, the men pull the posts (which are rooted in
cement) out of the ground. (3) When one post refuses to
come quietly ("Some of these old ones have close to 200
pounds of concrete attached to them, "says Chris), Jim .| LIMIT
uses a sledgehammer to speed the process. (4) After remov-
ing the old sign completely, Chris digs a hole for the new
sign, then (5) sets it in place, measures the distance from
ground to sign, and levels it off. (6) Jim then comes behind
him and dumps concrete and water into the hole to anchor *
the new sign. (7) Jim and Chris beside the finished product! CAMPUS WIDE