ASHRAE Journal - June 2020 - 35

2020 ASHRAE TECHNOLOGY AWARD CASE STUDIES

Indoor Air Quality and Thermal Comfort

Innovation Through
ASHRAE Applications
The mechanical system
concepts at the Tennessee
State Museum used
leading-edge technologies
to meet multiple project

Monthly EUI (kBtu/ft2/Month)

Sys Load (kBtu/h)

Museum galleries used high-efﬁciency, polarized
MERV 16 ﬁnal particulate and gas-phase ﬁltration and
high-purity steam humidiﬁcation to control airborne
pollutants and gaseous contaminants, as well as maintain humidiﬁcation requirements. High supply-air
distribution above the collections zone, coupled with
ﬂoor-level and sidewall low-velocity return-air openings, resulted in fully mixed, even air distribution, with
a zone air distribution effectiveness of 1.0. Air-handling
systems were designed for active pressure management
to control ﬂow of particulates and contaminants away
Figure 4 Frictionless centrifugal chiller plant.
from galleries.
Design reviews of ANSI/ASHRAE Standard 55-2013
8,000
for both galleries and public spaces indicated that
7,500
thermal comfort requirements were well within
7,000
6,500
temperature and humidity ranges for visitors and
6,000
full-time occupants. As-built results indicated
5,500
fully mixed zones within museum temperature
5,000
requirements.
4,500
ANSI/ASHRAE Standard 62.1-2013 ventilation
4,000
rate procedures were used to maintain minimum
3,500
outdoor air requirements, with airﬂow measur3,000
ing stations located in all outdoor air duct con2,500
nections. The galleries, conference rooms, event
2,000
spaces, and other high-occupancy areas are
1,500
controlled with CO2 sensors, per ANSI/ASHRAE
1Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 31 Dec Jan
Standard 62.1 requirements. Zone level controls
Friday
Friday
automatically increase supply air on a CO2 alarm,
ApHVAC Hot Water Loop Load: (p_TSM-SO-Proposed 12a2016-02-04.aps)
with reheat coils preventing the boxes from overApHVAC Chilled Water Loop Load: (p_TSM-SO-Proposed 12a2016-02-04.aps)
cooling. The custom air-handling units are also
Figure 5 Simultaneous heating and cooling annual proﬁle.
equipped with demand-controlled ventilation
sequences. The buildB
ing's outside air is reset
50
B
based on CO2 measureB
P
B
B
B
B
B
ments in the return air,
B
B
B
40
B
P
but not low enough to
P
P
impact critical pressure
30
P
relationships.
A
P
A
P
P

A

20

A

A

A

A

PA

P

A

PA

A

P

A

10
0

Jan

Heating

Feb

Mar

Humidiﬁcation

Apr

May

Cooling & Heat Rejection

Jun

Jul

Fans & Pumps

Aug

Sep

Lighting

Oct

Other

Nov

Dec

Actual EUI (9/18 to 8/19)

FIGURE 6 Tennessee State Museum monthly energy use-baseline (B), proposed (P) and actual (A).

J U N E 2020

ashrae.org

ASHRAE JOURNAL

35

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ASHRAE Journal - June 2020

Table of Contents for the Digital Edition of ASHRAE Journal - June 2020

Contents
ASHRAE Journal - June 2020 - Intro
ASHRAE Journal - June 2020 - Cover1
ASHRAE Journal - June 2020 - Cover2
ASHRAE Journal - June 2020 - 1
ASHRAE Journal - June 2020 - Contents
ASHRAE Journal - June 2020 - 3
ASHRAE Journal - June 2020 - 4
ASHRAE Journal - June 2020 - 5
ASHRAE Journal - June 2020 - 6
ASHRAE Journal - June 2020 - 7
ASHRAE Journal - June 2020 - 8
ASHRAE Journal - June 2020 - 9
ASHRAE Journal - June 2020 - 10
ASHRAE Journal - June 2020 - 11
ASHRAE Journal - June 2020 - 12
ASHRAE Journal - June 2020 - 13
ASHRAE Journal - June 2020 - 14
ASHRAE Journal - June 2020 - 15
ASHRAE Journal - June 2020 - 16
ASHRAE Journal - June 2020 - 17
ASHRAE Journal - June 2020 - 18
ASHRAE Journal - June 2020 - 19
ASHRAE Journal - June 2020 - 20
ASHRAE Journal - June 2020 - 21
ASHRAE Journal - June 2020 - 22
ASHRAE Journal - June 2020 - 23
ASHRAE Journal - June 2020 - 24
ASHRAE Journal - June 2020 - 25
ASHRAE Journal - June 2020 - 26
ASHRAE Journal - June 2020 - 27
ASHRAE Journal - June 2020 - 28
ASHRAE Journal - June 2020 - 29
ASHRAE Journal - June 2020 - 30
ASHRAE Journal - June 2020 - 31
ASHRAE Journal - June 2020 - 32
ASHRAE Journal - June 2020 - 33
ASHRAE Journal - June 2020 - 34
ASHRAE Journal - June 2020 - 35
ASHRAE Journal - June 2020 - 36
ASHRAE Journal - June 2020 - 37
ASHRAE Journal - June 2020 - 38
ASHRAE Journal - June 2020 - 39
ASHRAE Journal - June 2020 - 40
ASHRAE Journal - June 2020 - 41
ASHRAE Journal - June 2020 - 42
ASHRAE Journal - June 2020 - 43
ASHRAE Journal - June 2020 - 44
ASHRAE Journal - June 2020 - 45
ASHRAE Journal - June 2020 - 46
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ASHRAE Journal - June 2020 - 48
ASHRAE Journal - June 2020 - 49
ASHRAE Journal - June 2020 - 50
ASHRAE Journal - June 2020 - 51
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ASHRAE Journal - June 2020 - 53
ASHRAE Journal - June 2020 - 54
ASHRAE Journal - June 2020 - 55
ASHRAE Journal - June 2020 - 56
ASHRAE Journal - June 2020 - 57
ASHRAE Journal - June 2020 - 58
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ASHRAE Journal - June 2020 - 60
ASHRAE Journal - June 2020 - 61
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ASHRAE Journal - June 2020 - Cover3
ASHRAE Journal - June 2020 - Cover4
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