HVAC Regulations, Refrigerants and Solutions · HVAC Regulations, Refrigerants and Solutions E360...
Transcript of HVAC Regulations, Refrigerants and Solutions · HVAC Regulations, Refrigerants and Solutions E360...
HVAC Regulations, Refrigerants
and Solutions
E360 Forum • Chicago, IL • October 5
David Hules
Director of Commercial Marketing — Air ConditioningEmerson
This presentation is intended to highlight changing developments in the law and industry topics. The law is frequently evolving and information and publications in this presentation may not reflect the latest changes in the law or legal interpretations. The statements and information provided in this presentation should not be construed as legal advice or legal opinion regarding any specific facts or circumstances, but is intended for general informational purposes only. The views and statements expressed during this presentation are the personal opinions of the presenter and do not represent those of Emerson Climate Technologies, Inc. or its affiliated companies. You should consult an attorney about your situation and specific facts and you should not act on any of the information in this presentation as the information may not be applicable to your situation. Although all statements and information contained herein are believed to be accurate and reliable, they are presented without warranty of any kind. Information provided herein does not relieve the user from the responsibility of carrying out its own tests and experiments. Statements or suggestions concerning the use of materials and processes are made without representation or warranty that any such use is free of patent infringement and are not recommendations to infringe on any patents. This presentation may not be copied or redistributed without the express written consent of Emerson Climate Technologies, Inc.
Disclaimer
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Agenda
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Commercial heating and air conditioning trends
Regulations and future refrigerants landscape
What it means for you, and technologies to watch
5.5M Commercial Buildings in the U.S. and Key
HVAC Statistics Driving Three Megatrends
4.4MILLION
BUILDINGS WITH AC
1.6MILLION
NEW AC UNITS/YEAR
10MILLION
RTU INSTALLED BASE
<15PERCENTBMS PENETRATION
EFFICIEN
CY REGS
COMFORT
& HEALTH
CONNECT
IVITY
Efficiency
Comfort and
air quality
Building automation/
connectivity
5.5M Buildings
Source: Commercial Buildings Energy Consumption Survey (CBECS)
HVAC Statistics Megatrends
32 YEARSAVERAGE AGE
ONLY 20%OF BUILDINGS WITH
HVAC UPGRAGE
45%REDUCTION IN
ENERGY/SQ. FT.
BY 2030 (DOE)
1BSQ. FT. OF NEW
CONSTRUCTION PER
YEAR (2012–19)
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Megatrends and Industry Response to Drive More Efficient Buildings
Trend Industry Response
Building automation/
connectivity
Energy efficiency
Comfort and air quality
• Modulation technologies
– Compression and controls
• Low-GWP refrigerants
– A2L compression
– Next-gen compression
• Air management
– Latent vs. sensible
– Indoor air quality (IAQ)
• Efficiency retrofits
– Equipment controls/monitoring
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Most efficient components
Most efficient buildings
Most efficient systems
• Enable green buildings (LEED, net zero)
• Whole-building efficiency targets
• Ventilation and air quality
• Commissioning and monitoring for buildings
• Coordination of building subsystems
Holistic Building Solutions Deliver on the Promise of Most Efficient Buildings
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Agenda
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Commercial heating and air conditioning trends
Regulations and future refrigerants landscape
What it means for you, and technologies to watch
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DOE Efficiency Standards for Commercial AC Packaged/Split Systems
On 1/1/2018, the DOE Will Adopt the 90.1-2013 IEER Levels Nationally.
Note: ASHRAE 90.1 also has an EER component not shown here.
Note: Electric resistance values, subtract 0.2 EER/IEER for all other equipment. https://www.energycodes.gov/status-state-energy-code-adoption
Status of State Energy Code Adoption
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Emphasis on Air Quality Driving Demand for DOAS Architecture in Buildings
• State adoption of ASHRAE 62.1 – 2004 (and newer versions) is high–Specifies minimum ventilation rates and other measures intended to
provide IAQ that is acceptable to occupants
–44 states have adopted through the international mechanical code (IMC)
• Design engineers adopting DOAS building architecture over VAV–Multiple space equation (ASHRAE 62.1) in VAV systems leads to
20 to 70% more outside air than DOAS
• Poor damper control on air handlers
• VAV box minimum settings must be high to meet standard
• Provides first cost and annual savings–DOAS architectures reduce equipment size and provide up to 25%
annual operating cost savingsSource: www.doas.psu.edu
Ventilation Standards Impacting Building Designs
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Example of How DOAS Unit Application Can Benefit End Users
Commercial RooftopCurrent Architecture
• Major retail chains are replacing a portion (~⅓) of their HVAC systems with higher-efficiency DOAS systems
• Conventional HVAC systems focus on sensible load
• Dedicated DOAS systems to handle fresh air requirement and latent load (moisture removal)
• Overall energy savings to end users provide for increased value between DOAS and conventional units
Before: 10 Rooftop Units
10 Tons Each
100 Tons Total
After: 3–10 Tons New DOAS
7– ~7 Tons Old Units
79 Tons Total
DOAS Units
Smaller or Fewer RTUs
DOAS-Based Commercial RooftopNew Architecture
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2023 Will Introduce 0.5 to 1.0 SEER Increase Under the Current
Metrics for 2–5T Commercial Packaged and Split Equipment
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• 2023 standard, as per current metrics
• 2023 standard with new metrics (updating to better reflect actual field conditions)
Product Class National Southeast Southwest
SEER HSPF SEER SEER EER
Split AC < 45 kBTU/Hr 14 15 15 12.2/10.2*
Split AC >= 45 kBTU/Hr 14 14.5 14.5 11.7/10.2*
Split HP 15 8.8
Single Packaged AC and HP 14 8.0
Product Class National Southeast Southwest
SEER2 HSPF2 SEER2 SEER2 EER2
Split AC < 45 kBTU/Hr 13.4 14.3 14.3 11.7/9.8*
Split AC >= 45 kBTU/Hr 13.4 13.8 13.8 11.2/9.8*
Split HP 14.3 7.5
Single Packaged AC and HP 13.4 6.7
*10.2 EER Limit for Equipment >= 16 SEER
* 9.8 EER Limit for Equipment >= 16 SEER
Kigali Amendment to Montreal Protocol Drives Continued Activity on Low
Global Warming Potential (GWP), Mildly Flammable (A2L) Refrigerants
0
20
40
60
80
100
120
2015 2020 2025 2030 2035 2040 2045 2050
GW
P W
eig
hte
d C
AP
(%
of B
ase
line
)
Developed
countries
(U.S., Canada, etc.)
Developing countries
(India, China, etc.) ‘17 ‘18 ‘19 ‘20 ‘21 ‘22 ‘23 ‘24
A2L —
IEC/UL/ASHRAE
A2L into bldg. codes
Bldg. codes adoption
by states
DOE residential SEER
std.
DOE commercial RTUs
IEER std.EL1 EL3
EPA delist in chillers
• Global agreement reached by 197 countries in Kigali, Rwanda, in Oct. 2016
• EPA will ban the use of R-410A in AC chillers in 2024
• More actions expected to comply with global agreement
• The U.S. has not ratified
OEM A2L
design start
RTU launches
2024
freeze2028
freeze
Interim phase 1
Long-term phase 2
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http://multimedia.3m.com/mws/media/1365924O/unep-fact-sheet-kigali-amendment-to-mp.pdf
R-410A
Like
R-407/
R-22 Like
R-134a
Like
GWP Level
400–675
< 1,500
~600
150–300
HFO 1234yf
R-410A
R-22
R-407C
0 500 1,000 1,500 2,000
Pressure
R-32/HFC/HFO
Blends
R-32, R-452B,
HFO blends
HFC/HFO
BlendsR-134a
CO2
R-290
NH3
A1 – Non Flammable
A2L – Mildly Flammable
A3 – Flammable
B2L – Toxic, Mildly Flam.
R-123 LikeHFO 1234ze
HFO
Blends
Large
chillers
(R-1234ze)
Unitary
systems
<750 <1,500<150
Current, Likely Low-GWP Candidates for Air Conditioning Applications
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Key Activities Impacting Low-GWP Refrigerant Regulations
and Timing for HVAC in the U.S.
• HFC Phase-down Timing Is Uncertain– August 2017 EPA’s SNAP Rule 20 delisting of certain HFCs vacated (by U.S. Court of
Appeals for the DC Circuit)
– Rule remanded (sent back) to EPA for further proceedings
– AHRI and other HVACR industry partners continue to support and advocate for ratification of the Kigali Amendment to the Montreal Protocol and the phase-down of HFCs
• Key Safety Standards Under Revision for A2L Refrigerants
– ASHRAE 15, UL1995 and UL60335-2-40
• Ongoing A2L Research Six studies ongoing; two complete
– AHRTI-9007: Benchmarking Risk by Real Life Leaks and Ignitions Testing
– AHRTI-9009: Leak Detection of A2L Refrigerants in HVACR Equipment
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Agenda
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Commercial heating and air conditioning trends
Regulations and future refrigerants landscape
What it means for you, and technologies to watch
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How Could Regulations Potentially Impact You?
• Higher part-load efficiency (IEER) systems–Potentially higher first cost
–Lower operating cost
• Potential increase in system footprint– Larger heat exchanger surface area
• Reduction in system refrigerant circuits
• More applications with modulated scroll compressors– Mechanical modulation and variable-speed technology
• More complicated controls
• VFDs on evaporator blower motors — staged speeds
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Technology Solutions to Optimize System Part-Load Efficiency
Multi-speed blower fans
Multi-speed condenser fans
Compression
Larger coil heat exchangers
and fewer circuits
Controls
Technology Levers
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Industry Also Focused on ROI-driven Solutions for the
Installed Base to Improve Building Performance
Only 14% of Buildings ≤200K Sq. Ft. Have Some Form of Building Management System.
Replace HVAC Equipment
• Substitute HVAC equipment to a high-efficiency system
• High first cost
• Tenant versus owner conflict
Upgrade Installed Base of Equipment
• Retrofit to improve HVAC efficiency
• Rebate incentives drive actions
• Upgrade improves comfort
Lt. Commercial Building Management System (BMS)
• Connected upgrade for system health and fault detection
• Virtual “building controls” through connectivity and cloud
• System complexity varies, depending on building size
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Small
Comm’l Building
Medium
Comm’l Building
Large
Comm’l Building
≤25K sq. ft. ≥200K sq. ft.
Lt. Commercial BMS Opportunity
~99% of U.S. Comm’l Buildings
>25K–200K sq. ft.
Well Served
Source: Commercial Buildings Energy Consumption Survey (CBECS)
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Multi-HVAC System Management Solutions
Emerging for Commercial Buildings
Analytics and reports
Machine learning
Centralized monitoring
and control
Multi-stat dashboard creates
groups, multi-site, sorting,
searching a thermostat
Multi-system management Smart automation
• Batch scheduling
• Special events scheduling
• Occupancy-based controls
• Calendar sync
Actionable alerts
Multi-user controls
• Access controls
• Admin functionality
Open-source
interoperability
Third party integrations
to expand features
Premium Feature Offerings Easy Management
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Transformative Wave Turns RTUs Into Smart, Efficient Machines
Patented
Upgrade for existing RTUsreduces overall HVAC energy
use up to 50%
Web-based connectivity package and software tools for RTU monitoring, fault detection and
reporting
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Three Pillars to Improving Installed Base Building Performance
Proven Solutions Exist to Enable Operational Efficiency
Improvements of Existing HVAC Systems and Building Infrastructure.
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optimize upgrade perpetuate
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Questions?
DISCLAIMER
Although all statements and information contained herein are believed to be accurate and reliable, they are presented without guarantee or warranty of any kind, expressed or
implied. Information provided herein does not relieve the user from the responsibility of carrying out its own tests and experiments, and the user assumes all risks and liability for
use of the information and results obtained. Statements or suggestions concerning the use of materials and processes are made without representation or warranty that any such
use is free of patent infringement and are not recommendations to infringe on any patents. The user should not assume that all toxicity data and safety measures are indicated
herein or that other measures may not be required.
Thank You!
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