ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 31
This shows that correct estimation of
the real-life utilization of a fan will
have a major impact on the accuracy
of a payback calculation.
Payback should not be the sole
consideration in the choice of motor
but, rather, guide the purchaser
toward the correct decision in light
of the application and organizational
priorities. For example, reliability or
noise may be weighted more heavily
by the customer, or the customer may
be striving to meet certain green
initiatives regardless of the payback.
It is worth noting that the cost of
carbon emissions is being omitted
here, as it is a much more complicated
discussion and outside the scope of
this article.
Summary
When selecting a motor for a LDCF,
specifi ers and purchasers often must
prioritize reliability, fi rst cost, and
energy effi ciency. Often, reliability
favors direct-drive motors over geardriven
motors because of the absence
of a gearbox, a potential point of
failure. Energy effi ciency can quickly
offset upfront cost and be calculated
using methods shared in this article.
It is important to have a complete
understanding of operating conditions,
requirements, and goals when
making a decision.
About the Author
A senior mechanical engineer
for 4Front Engineered Solutions
and Epic Fans, Ryan Perkinson
has over a decade of HVAC engineering
experience, the last several
years of which have been focused
on LDCF. He has served on the
www.amca.org
2024 AMCA inmot ion
31
AMCA North America Region Air
Movement Advocacy Committee
as well as technical committees
for ANSI/AMCA Standard 99,
Standards Handbook; ANSI/AMCA
Standard 210/ASHRAE Standard
51, Laboratory Methods of Testing
Fans for Certified Aerodynamic
Performance Rating; and ANSI/
AMCA Standard 230, Laboratory
Methods of Testing Air Circulating
Fans for Rating and Certifi cation.
http://berner.com
http://www.amca.org
ASHRAE Journal Supplement - AMCA InMotion - November 2024
Table of Contents for the Digital Edition of ASHRAE Journal Supplement - AMCA InMotion - November 2024
Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - CT1
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - CT2
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - Cover1
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - Cover2
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 2
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 3
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 4
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 5
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 6
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 7
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 8
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 9
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 10
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 11
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 12
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 13
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 14
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 15
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 16
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 17
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 18
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 19
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 20
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 21
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 22
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 23
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 24
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 25
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 26
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 27
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 28
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 29
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 30
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 31
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 32
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 33
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 34
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 35
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 36
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - Cover3
ASHRAE Journal Supplement - AMCA InMotion - November 2024 - Cover4
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