ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 22

Air-Distribution
Design for Comfort in

High-Performance
Air Systems

Monkey Business Images/Shutterstock

By DAN INT-HOUT,

AMCA High Performance Air Systems Committee

HVAC-equipment selection, location, and operation can have a significant
impact on occupant comfort and, thus, the cost of running a business. How
do you determine the suitability of a device for a given application and

A

where to place devices for effective delivery of required parameters?
mid growing concerns about climate change,

high-performance air system (HPAS) is an excellent means

resource scarcity, and carbon emissions, it can be

of cost-efficiently providing comfort and ventilation in

easy to lose sight of the biggest challenge of HVAC-system

commercial spaces. This article will discuss how to deter-

design: to provide an environment acceptable to the occu-

mine the suitability of a device for a given application and

pants of a space. This is especially true with commercial

where to locate devices for effective distribution of required

buildings. With the cost of employing people likely several

parameters, including temperature and outdoor air.

orders of magnitude greater than the cost of operating

More importantly, the article will discuss how to deter-

the HVAC systems in such spaces-employee salary costs

mine the effectiveness of room air distribution during

are at least 200 times greater than energy costs in almost

design. Using air diffusion performance index (ADPI) for

building1-it

makes sense to base selection,

open offices (no enclosed rooms or walled cubicles) and

location, and operation of HVAC components on what will

jet mapping for other spaces, we can be assured we are

provide the greatest occupant comfort.

providing a comfortable environment.

every type of

As discussed in the 2018 edition of AMCA inmotion,2 a

22

20 19 A M CA i n m o t i o n

The discussion will focus on variable- and constant-volume

w w w. a m c a .o r g


http://www.amca.org

ASHRAE Journal Supplement - AMCA InMotion - September 2019

Table of Contents for the Digital Edition of ASHRAE Journal Supplement - AMCA InMotion - September 2019

Contents
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - BB1
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - BB2
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - Cover1
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - Cover2
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - Contents
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 2
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 3
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 4
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 5
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 6
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 7
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 8
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 9
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 10
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 11
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 12
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 13
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 14
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 15
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ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 17
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 18
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 19
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 20
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 21
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 22
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ASHRAE Journal Supplement - AMCA InMotion - September 2019 - 24
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ASHRAE Journal Supplement - AMCA InMotion - September 2019 - Cover3
ASHRAE Journal Supplement - AMCA InMotion - September 2019 - Cover4
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