ASHRAE Journal - September 2023 - 51
TECHNICAL FEATURE
Additionally, Standard 90.1-2022 added an additional
lighting power allowance for videoconferencing.
With the rise of videoconferencing technologies,
spaces may need more lighting for those dedicated
lighting systems. If a project meets the lighting
recommendations in ANSI/IES/AVIXA RP-38-17,
Recommended Practice for Lighting Performance for
Small to Medium Sized Videoconferencing Rooms,
then the project is allowed to use a little more power
(0.50 W/ft2 [5.4 W/m2]) if needed.
Table 3 provides a comparison of the additional lighting
power density values for the last three code cycles.
Credits
The August ASHRAE Journal issue included a good
overview article on the new Section 11 within Standard
90.1 on energy credits. Multiple lighting and controlrelated
credits are offered, including credits for
reduced interior lighting power, expanded use of
daylighting, expanded use of occupancy controls and
TABLE 3 Additional lighting power density values, Standards 90.1-2016, 2019, and
2023.
SPACE TYPE
Decorative Allowance
Retail Allowance
Retail 1
Retail 2
Retail 3
Retail 4
Videoconferencing
90.1-2016,
W/ft2
0.75
0.45
0.45
1.05
1.88
--90.1-2019,
W/ft2
0.75
0.45
0.45
1.05
1.88
--90.1-2023,
W/ft2
0.70
0.40
0.40
0.70
1.00
0.50
new
control options like task tuning and grid-related
operations like demand response.
Conclusion
The elements of Section 9 were revised, and several
new subsections were added. The changes in 90.1-2022
related to Section 9 alone result in at least 1.5% energy
savings in buildings.
S E PTEM B E R 2 0 2 3
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ASHRAE Journal - September 2023
Table of Contents for the Digital Edition of ASHRAE Journal - September 2023
Table of contents
ASHRAE Journal - September 2023 - Intro
ASHRAE Journal - September 2023 - Cover1
ASHRAE Journal - September 2023 - Cover2
ASHRAE Journal - September 2023 - 1
ASHRAE Journal - September 2023 - Table of contents
ASHRAE Journal - September 2023 - 3
ASHRAE Journal - September 2023 - 4
ASHRAE Journal - September 2023 - 5
ASHRAE Journal - September 2023 - 6
ASHRAE Journal - September 2023 - 7
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