Digital Commemorative Magazine - 38

Price
Radiant Panels
combined with low
level displacement
to provide energy
eﬃcient ventilation
and conditioning.

(most notably people),
far less fan power is
required. The characteristics of low air speed
(<50 fpm [<15 m/min]),
and low static pressure
drop (<0.05 in. w.c. [12
Pa]) associated with DV
diﬀusers help minimize
noise and is a signiﬁcant
reason why DV has seen large adoption in
noise-sensitive spaces such as oﬃces, classrooms
and performing art centers.
The coupling of DV and DOAS units provides
additional savings against long-term operational
costs. The supply air for a DV system is usually
10°F (6°C) warmer compared to conventional
overhead systems using 55°F (13°C) supply air
temperatures. The coupling of DV and DOAS
allows for economical cooling using outdoor air for
an increased number of hours throughout the year.

of outdoor air helped assist the design team in
meeting the targeted energy use goals for the
building. The training rooms use a demand control
ventilation strategy that allows modulation of the
outdoor air based on the actual level of CO2 in
the space. Overall energy consumption is reduced
by supplying conditioned outdoor air only when
required. Studies have shown DV to have signiﬁcantly lower concentrations of contaminants and
CO2 in the breathing zone versus a traditional
mixing dilution system.

ASHRAE Standard 62.1- 2019 (ventilation standard) allows for a reduction in outdoor air volumes
of up to 33% for standard space heights and up to
53% for tall spaces due to ventilation eﬀectiveness
and the improved air quality that displacement
systems provide. The ability to reduce the quantity

Other typical design challenges encountered with
existing oﬃce space are the various ventilation
requirements (as per ASHRAE Standard 62.1) and
cooling loads, both latent and sensible, for each
zone. The required cooling loads within the space
will vary depending on a number of conditions
Figure 2.1

Digital Commemorative Magazine

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