ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 27
Mechanical equipment contains moving parts,
which cause friction. The friction releases energy
in the form of vibrations, which radiate noise. The
noise can negatively impact nearby residents, not to
mention building occupants. Credit: Michael Vi/Shutterstock
duct silencers), fi xed-blade acoustic louvers, double-walled
barriers and enclosure panels, noise-control pergolas/
stacks, and sound absorbers.
Getting Started
The fi rst step in addressing any outdoor-noise problem is
to understand the source of the noise, the receiver of the
noise, and the path from the source
to the receiver. The environmental
surroundings also are important,
as noise can propagate along many
different paths. The factors most
commonly affecting noise propagation
outdoors are distance, atmospheric conditions, wind
direction, terrain, and the presence or lack of wooded
areas and buildings nearby.
In the design of a noise-control solution, equipment
accessibility is important. If routine maintenance is diffi -
cult to perform, necessary work may not be completed,
and equipment performance will suffer. What's more, the
life of the equipment will be shortened. It is important to
enable portions of a system to be removed in the event of
catastrophic equipment failure.
In summary, design of a successful
A SOLUTION THAT MITIGATES
NOISE BUT COMPROMISES
EQUIPMENT PERFORMANCE
IS A FAILED ONE.
noise-abatement solution takes into
consideration the equipment manufacturer's
warranty, local electrical
codes, equipment ventilation, local
noise ordinances, equipment location
with respect to critical areas, equipment dimensions, maintenance
access, and structural issues (e.g., wind loading,
seismic restraints, concrete footings, tie-ins, drainage).
Considerations
The key to controlling noise produced by mechanical
equipment is knowing how the equipment operates. A
solution that mitigates noise but compromises equipment
performance is a failed one.
www.amca.org
Noise-Generating
Mechanical Equipment
Mechanical equipment commonly benefi tting from noisecontrol
solutions includes ventilation fans, air-cooled
chillers, and induced-draft cooling towers.
2023 AMCA inmot ion
27
http://www.amca.org
ASHRAE Journal Supplement - AMCA InMotion - November 2023
Table of Contents for the Digital Edition of ASHRAE Journal Supplement - AMCA InMotion - November 2023
Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - BB1
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - BB2
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover1
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover2
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 2
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 3
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 4
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 5
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 6
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 7
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 8
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 9
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 10
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 11
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 12
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 13
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 14
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 15
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 16
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 17
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 18
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 19
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 20
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 21
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 22
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 23
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 24
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 25
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 26
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 27
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 28
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 29
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 30
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 31
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 32
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 33
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 34
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 35
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 36
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover3
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover4
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