ASHRAE Journal - September 2023 - 43

TECHNICAL FEATURE
be adopted without changing the OEM manufacturing
process or incurring additional, higher costs. In
addition, a signifi cantly optimized space exists for the
AGR assembly and integration in the design of new
OEM furnace products. The reported AGR integration
approach is a single large AGR (Figure 1d), but could
be multiple compact AGR (Figure 5) with the primary
tubular HX of any condensing
furnaces. Such an assembly style
will result in an AGR-equipped
furnace at least as compact as
today's condensing furnaces.
Overall, the ultraclean fl ue gas
and neutral condensate gained
by use of AGR technology enables
furnaces to potentially achieve
simpler installation, higher
effi ciency and environmental
protection. All these advantages
will help reduce the furnace
capital cost, lower installation and
maintenance expenses and grow
market adoption of high-effi ciency
condensing furnaces.
Acknowledgments
This work was sponsored by the
U.S. DOE Building Technologies
Offi ce with Antonio Bouza as a
program manager and ORNL
Technology Innovation Program.
This research used resources at the
Building Technologies Research
and Integration Center, a DOE
Offi ce of Science User Facility
operated by the Oak Ridge National
Laboratory (ORNL). The authors
also thank ORNL colleagues who
provided help in the work.
References
1. Gao, Z., et al. 2021. " Monolithic Gas
Trap Adsorber for High Effi ciency, Cost
Effective, Low-Emission Condensing
Furnace. " U.S. Patent Application
17/232,274.
2. Gao, Z., et al. 2022. " Ultra-clean
condensing gas furnace enabled with
acidic gas reduction. " Energy 243:123068.
S E PTEM B E R 2 0 2 3 ashrae.org ASHRAE JOURNAL
43
3. Brodrick, J.R., A. Moore. 2001. " Conquering corrosion:
developing new alloys for furnaces. " ASHRAE Journal 42(4):29 - 34.
4. Liberty, Plumbing, Heating, Airconditioning. Undated.
" California New Furnace Emissions Standards. " Liberty Plumbing,
Heating, and Air Conditioning. https://tinyurl.com/2cn4u22m
5. ANSI/ASHRAE Standard 103-2018, Method of Testing for Annual Fuel
Utilization Effi ciency of Residential Central Furnaces and Boilers.
6. Trane. Undated. " Gas Furnace Maintenance. " Trane. https://
tinyurl.com/yc544bw8

https://tinyurl.com/2cn4u22m https://tinyurl.com/yc544bw8 http://tinyurl.com/yc544bw8 http://www.berner.com http://www.ashrae.org

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
ASHRAE Journal - September 2023 - 8
ASHRAE Journal - September 2023 - 9
ASHRAE Journal - September 2023 - 10
ASHRAE Journal - September 2023 - 11
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ASHRAE Journal - September 2023 - Cover3
ASHRAE Journal - September 2023 - Cover4
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