ASHRAE Journal - April 2015 - 48

Odor Control
Odor control in penguin exhibits
is often a struggle for HVAC designers. Typically, animals are physically
separated from guests making control simpler. However, in this project
guests are allowed to flow freely into
and out of the exhibit through openings large enough to accommodate
the ride vehicles.
Based on positive past experience, the design team recommended the use of excitation
technology via a "non-homogenous, in-unit electrical field" to
help control odor. Such a system
increases the rate of collisions
among the suspended particles
in the HVAC system's airstream,

causing an increase in particle size
by combining these submicron
particles. The particles both absorb
and adsorb odor. As particle sizes
increase, the HVAC filters can trap
them along with the odor. The
large recirculating air-handling
units that house these electrical
grids are located above the exhibit.
In addition to providing special
excitation technology and the highest level of filtration, HVAC systems
serving areas surrounding the
exhibit were fitted with titanium
dioxide catalytic filtration systems.
The design team felt employing
these two technologies would afford
us the best possible odor control
approach for the facility.

Photo Credit: SeaWorld

2015 ASHRAE TECHNOLOGY AWARD CASE STUDIES

Light fixtures were placed outside the cold envelope
to minimize heat gain in the exhibit.

Energy Efficiency

www.info.hotims.com/54427-7
48

ASHRAE JOURNAL

ashrae.org

APRI L 2015

When creating a 32°F (0°F) space
in hot and humid Orlando, the efficiency of the envelope and the systems serving that space are crucial to
keep operating costs at a minimum.
As noted earlier, the design team's
first task was to reduce the effect of
the outdoor conditions by ensuring the coldest and driest areas (less
than 50°F [10°C]) were properly
encapsulated by a thermal panel
system with excellent insulation
and vapor barrier characteristics.
A high quality freezer panel system
was used to provide this barrier.
In addition, temperate, low dew
point zones surround the coldest
areas. Very efficient liquid desiccant systems with ERV (air-to-air
total energy plate heat exchangers)
perform dehumidification work in
these areas. Sally ports and revolving
doors help maintain the envelope
around the low dew point areas
while allowing thousands of guests
to enter each hour.



ASHRAE Journal - April 2015

Table of Contents for the Digital Edition of ASHRAE Journal - April 2015

Contents
ASHRAE Journal - April 2015 - Cover1
ASHRAE Journal - April 2015 - Cover2
ASHRAE Journal - April 2015 - 1
ASHRAE Journal - April 2015 - 2
ASHRAE Journal - April 2015 - Contents
ASHRAE Journal - April 2015 - 4
ASHRAE Journal - April 2015 - 5
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ASHRAE Journal - April 2015 - Cover4
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