ASHRAE Journal - August 2024 - 54
TECHNICAL FEATURE
the no setback approach may even be an effective way
to maintain comfort conditions without costly and
disruptive infrastructure replacements. Lastly, for
buildings with electric heat, the improved morning
warm-up strategies may reduce winter demand charges.
In areas where time-of-use utility tariffs have morning
peak periods in the winter (of which there will be
more in the future as more buildings are electrified),
improved morning warm-up strategies have the
opportunity to reduce both energy and demand charges
and reduce strain on electrical grids.
Future study should examine how different warm-up
strategies may better achieve varying objectives,
whether minimizing energy cost, peak heating load,
peak electrical demand or marginal carbon emissions
and consider suggesting revisions to Guideline 36.
Acknowledgments
The authors are grateful to Michael Schenone,
formerly at Los Medanos College and Tracy Marcial at
Contra Costa Community College District for supporting
this research and generously allowing this testing to
be performed at their facility. This work was partially
funded by the California Energy Commission's Gas
Research and Development Program, agreement
number: PIR-19-013.
References
1. ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and
Buildings Except Low-Rise Residential Buildings.
2. ICC. 2021. International Energy Conservation Code. International
Code Council.
3. CEC. 2022. California Energy Code (Title 24), Part 6-California's
Building Energy Efficiency Standards for Residential and
Nonresidential Buildings. California Energy Commission.
4. ASHRAE Guideline 36-2021, High-Performance Sequences of Operation
for HVAC Systems.
5. Wang, J., J. Stein, K. Choi, P. Mustacich, M. Waltner, G. Achong. et
al. 2022. " Boiler Research Project Final Report In Support of ASHRAE
Standard 155P. " PG&E. https://tinyurl.com/4ryx8k32
6. Raftery, P., R. Singla, H. Cheng, G. Paliaga. In Press. " Insights
from hydronic heating systems in 259 commercial buildings. " Energy
and Buildings.
7. Raftery, P., A. Geronazzo, H. Cheng, G. Paliaga. 2018. " Quantifying
energy losses in hot water reheat systems. " Energy and Buildings
179:183-199. https://doi.org/10.1016/j.enbuild.2018.09.020
8. Raftery, P., D. Vernon, R. Singla, M. Nakajima. 2023. " Measured
space heating hot water distribution losses in large commercial
buildings. " ASHRAE Transactions 129(1)
Commissioning for repairs
and replacements?
Ensure your project meets minimum requirements for
existing buildings with new ASHRAE Standard 230.
ashrae.org/bookstore
54
ASHRAE JOURNAL ashrae.org A U G U ST 2 0 2 4
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ASHRAE Journal - August 2024
Table of Contents for the Digital Edition of ASHRAE Journal - August 2024
Contents
ASHRAE Journal - August 2024 - Intro
ASHRAE Journal - August 2024 - Cover1
ASHRAE Journal - August 2024 - Cover2
ASHRAE Journal - August 2024 - 1
ASHRAE Journal - August 2024 - Contents
ASHRAE Journal - August 2024 - 3
ASHRAE Journal - August 2024 - 4
ASHRAE Journal - August 2024 - 5
ASHRAE Journal - August 2024 - 6
ASHRAE Journal - August 2024 - 7
ASHRAE Journal - August 2024 - 8
ASHRAE Journal - August 2024 - 9
ASHRAE Journal - August 2024 - 10
ASHRAE Journal - August 2024 - 11
ASHRAE Journal - August 2024 - 12
ASHRAE Journal - August 2024 - 13
ASHRAE Journal - August 2024 - 14
ASHRAE Journal - August 2024 - 15
ASHRAE Journal - August 2024 - 16
ASHRAE Journal - August 2024 - 17
ASHRAE Journal - August 2024 - 18
ASHRAE Journal - August 2024 - 19
ASHRAE Journal - August 2024 - 20
ASHRAE Journal - August 2024 - 21
ASHRAE Journal - August 2024 - 22
ASHRAE Journal - August 2024 - 23
ASHRAE Journal - August 2024 - 24
ASHRAE Journal - August 2024 - 25
ASHRAE Journal - August 2024 - 26
ASHRAE Journal - August 2024 - 27
ASHRAE Journal - August 2024 - 28
ASHRAE Journal - August 2024 - 29
ASHRAE Journal - August 2024 - 30
ASHRAE Journal - August 2024 - 31
ASHRAE Journal - August 2024 - 32
ASHRAE Journal - August 2024 - 33
ASHRAE Journal - August 2024 - 34
ASHRAE Journal - August 2024 - 35
ASHRAE Journal - August 2024 - 36
ASHRAE Journal - August 2024 - 37
ASHRAE Journal - August 2024 - 38
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ASHRAE Journal - August 2024 - 40
ASHRAE Journal - August 2024 - 41
ASHRAE Journal - August 2024 - 42
ASHRAE Journal - August 2024 - 43
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ASHRAE Journal - August 2024 - 45
ASHRAE Journal - August 2024 - 46
ASHRAE Journal - August 2024 - 47
ASHRAE Journal - August 2024 - 48
ASHRAE Journal - August 2024 - 49
ASHRAE Journal - August 2024 - 50
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ASHRAE Journal - August 2024 - 55
ASHRAE Journal - August 2024 - 56
ASHRAE Journal - August 2024 - 57
ASHRAE Journal - August 2024 - 58
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ASHRAE Journal - August 2024 - 60
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ASHRAE Journal - August 2024 - 69
ASHRAE Journal - August 2024 - 70
ASHRAE Journal - August 2024 - 71
ASHRAE Journal - August 2024 - 72
ASHRAE Journal - August 2024 - Cover3
ASHRAE Journal - August 2024 - Cover4
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