CEAC-2022-06-June

“The parapet walls are 10 feet high around all the rooftop equipment
to hide it. We had one side that was basically all louvers to
allow airflow to the cooling towers.”
Airflow issues also meant that the units had to be raised five feet,
so that in the end it spanned three floor heights from the 21st
floor up to the rooftop level of the towers.
Of course, these cooling towers don’t work in isolation. Each one
is served by two pumps: one for each cell. Patterson pumps were
installed: 1250 GPM pumps for tower one, 1500 GPM pumps for
tower two and 900 GPM pumps serving the cooling towers for
tower three.
Separating the cooling towers from the closed loop condenser
systems is a plate and frame heat exchanger for each tower.
Integrated Cooling Solutions provided the Kelvion stainless steel
heat exchangers with flanged connections. System pumps were
sized at 1100 GPM for tower one, 1300 GPM for tower two and
700 GPM for tower three, all Patterson.
The tower condenser water distribution was taken off a main
header in the mechanical room. Sanek described the piping for
the building’s cooling system. “On tower two it goes from 14
inch headers down to one and-a-quarter inch branches to the
heat pumps. There are eight risers serving the residential suites
and one six-inch express riser serving the spa and common area.
The unit risers range from two- to four-inch pipes.”
Controls for the cooling towers, however, are very simple.
“The cooling tower controls are basically integrated for system
monitoring,” said Sanek, “while the suite controls are based on
comfort setpoints.”
PARK GROVE CONVENIENCES
The bank installation was even more challenging without a rooftop
to install equipment. “At the bank we used indoor cooling
towers,” said Sanek. “They’re ducted to the outside with sound
attenuators to reduce noise and keep it all contained because
there was no roof.”
Intake air comes from below and is exhausted through sidewall
louvers. “The bank’s mechanical space is located above the
parking garage,” explained Sanek. “The garage has one open
side so fresh air can get in. An opening in the mechanical room
floor allows air to enter for the cooling towers. The side of the
mechanical room has 50 percent free air exhaust louvers with a
plenum and drain pan on the back.”
An EVAPCO cooling tower was also used for the new restaurant,
which sits in tower three’s lobby. “The cooling tower for
the restaurant is the same as the bank’s,” said Sanek. “These were
also ducted using sound attenuators.”
Luxurious Park Grove tower interior.
KEEPING IT UPSCALE
Anyone occupying real estate at Park Grove towers has access
to spaces served by reliable equipment. Sanek painted a clear
picture of his experience with EVAPCO when he said, “they
are very easy to work with and the design team gave excellent
support to the engineers. So most issues were already taken care
of before installation. They’ve also been very quick to respond
to questions and their engineers were very helpful, even making
themselves available for meetings.”
“Today, Park Grove is one of the trendier places overlooking
Biscayne Bay,” said Fernandez. “Even though it’s well established,
the neighborhood is now enjoying quite a renaissance.”
Thermal comfort plays a large role in perceptions about luxury.
Reputation means everything on a project like this and there
can be no compromise on quality. With the right equipment in
place, rarely if ever to be seen by the residents of Park Grove,
their investment in the luxury they see is amply supported by
the luxury they can feel.
Project Manager Andrew Sanek, Nagelbush Mechanical Inc.,
and Engineer David Fernandez, Integrated Cooling Solutions,
LLC, contributed to this story.
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