ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 19

Credit: Kwarkot/Bigstock
BY MICHAEL J. BULZOMI, AMCA NORTH AMERICA REGION
AIR CONTROL ADVOCACY COMMITTEE
H
ousing applications and information vital to
the way the world works, collaborates, and
socially interacts, data centers operate 24 hours a day,
seven days a week, 365 days a year. The processors,
servers, and other information-technology (I.T.) equipment
they contain generate an exorbitant amount of
heat. If that heat and resultant humidity is not controlled,
the equipment will be at great risk of failure, which can
lead to costly downtime, lost data, and lost revenue.
HVAC systems for data centers, thus, are designed for
year-round cooling with precise monitoring and control
of ventilation.
www.amca.org
This article will provide a foundational understanding
of the various types of control dampers available for use
in data-center ventilation and present recommendations
for specifi c performance requirements.
Damper Basics
As defined in ANSI/AMCA Standard 500-D, Laboratory
Methods of Testing Dampers for Rating, a damper
is a device mounted in a duct or opening that varies the
volume of air fl owing through the duct or opening. A
damper may be operated manually or mechanically and
have a single blade or multiple blades. Ventilation of a
space includes the integration of dampers to control the
volume of outside air, return air, and exhaust air.
If controlled mechanically with an actuator, dampers
2021 AMCA inmot ion
19
http://www.amca.org

ASHRAE Journal Supplement - AMCA InMotion - November 2021

Table of Contents for the Digital Edition of ASHRAE Journal Supplement - AMCA InMotion - November 2021

Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - BB1
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - BB2
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - Cover1
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - Cover2
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 2
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 3
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 4
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 5
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ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 7
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ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 18
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 19
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 20
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 21
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ASHRAE Journal Supplement - AMCA InMotion - November 2021 - Cover3
ASHRAE Journal Supplement - AMCA InMotion - November 2021 - Cover4
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