Better Buildings Alliance Discussion on Advanced ......Better Buildings Alliance Discussion on...
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Click To Edit Master Title Style Better Buildings Alliance Discussion on Advanced Refrigeration Thursday, January 11, 2018 4:00 – 5:00 pm ET Number: (415) 655-0060 Passcode: 330-184-264
Transcript of Better Buildings Alliance Discussion on Advanced ......Better Buildings Alliance Discussion on...
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Better Buildings Alliance Discussion onAdvanced Refrigeration
Thursday, January 11, 20184:00 – 5:00 pm ETNumber: (415) 655-0060Passcode: 330-184-264
Presenters
Tony Bouza, Technology ManagerU.S. Department of Energy – Building Technologies Office
Michael Deru, Researcher V–Mechanical EngineeringNational Renewable Energy Laboratory (NREL)
Danielle Wright, Executive DirectorNorth American Sustainable Refrigeration Council (NASRC)
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DOE’s Refrigeration Research Strategy & Opportunities to Collaborate
Tony Bouza, U.S. DOE
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U.S. DOE HVAC&R Strategy, Efficiency First
DOE’s ultimate goal is to develop the next-generation technologies that ‘leapfrog’ existing technologies and result in dramatically improved energy efficiency.
Short Term: Develop and evaluate low-GWP alternative refrigerants, including flammability characterization and hot climate performance (energy savings via today’s technologies).
Mid Term: Develop HVAC&R systems that can handle low-GWP refrigerants (energy savings via tomorrow's technologies).
Long Term: Develop non-vapor compression systems that use zero-GWP refrigerants (energy savings via next generation technologies).
U.S. DOE HVAC&R Strategy, Efficiency first
• Technical Reports Goetzler et al (Navigant
Consulting, Inc)• R&D
National Labs Private sector Universities
• International Activities IEA
Basic Science
Applied Science
Prototype / Demos
Asset Investors Market
Tech Gaps
Manufacturers
Appliance Standards Program, Regulatory
BTO: R&D with CRADAs
Strategy: National Labs CRADA projects, FOAs and use of BTO’s deployment teams with research homes
Commercialization Gaps
CRADA : Collaborative Research and Development Agreement
HVAC, Water Heating and Appliance R&D
More than just discrete one-off projects but a continuum from low TRL engineering efforts into a “market-ready” product
HillPhoenix: Transcritical CO2 Supermarket Refrigeration System (Advansor System)
Research supported by BTO, Oak Ridge National Laboratory’s (ORNL’s) cooperative research and development agreement (CRADA) with HillPhoenix
• Low GWP refrigerant (CO2), with 25 percent lower energy consumption than existing systems, and 78% lower GHG emissions
• ORNL (CRADA with Hillphoenix • Low-emission, high-efficiency commercial
refrigeration system suitable for use in current U.S. supermarkets
• Hillphoenix’s Second Nature® “Advansor System” is the first to be UL listed in North America and already has several applications in the U.S.
Honeywell (R-448A): New Refrigerant Boosts Energy Efficiency of Supermarket Display Cases
Research supported by BTO, Oak Ridge National Laboratory’s (ORNL’s) cooperative research and development agreement (CRADA) with Honeywell• Alternative refrigerant that minimizes the
environmental footprint of supermarket refrigeration systems
• Honeywell and ORNL have developed Solstice® N40 (R-448A), a non-toxic hydrofluoroolefin (HFO) -based refrigerant alternative for R-404A, most common refrigerant used
• Offers a lower-global-warming potential and energy-saving replacement for R-404A
• GWP potential of 1,300, making it 67 percent less potent than R-404A
• Creates energy savings of 10 percent compared to R-404A
IEA Annex 44: Performance indicators for energy efficient supermarket buildings
Supermarkets and the supermarket sector, main target for the Annex. • To create key performance indicators for energy
efficient supermarket buildings• To create knowledge concerning the energy
efficiency of supermarket buildings from measurements and monitored data
“It is becoming a good practice to use heat recovery on supermarket refrigeration systems, but it is still uncommon to see these systems as heat pumps. The HPT can play a role in bringing the heat pump and refrigeration sectors closer together, to the mutual benefit of both sectors.” Final Report
http://heatpumpingtechnologies.org/publications/performance-indicators-for-energy-efficient-supermarket-buildings-final-report/
Current Refrigeration work at ORNL
• Defrost technologies for Heat Pumps and Refrigeration Systems
• Novel Design for Compact Flooded Evaporators for Commercial Refrigeration Applications
• Magnetocaloric Refrigerator, develop the world’s first magnetocaloric refrigerator
• Expansion losses in commercial refrigeration systems
• Determining Safe Charge Limits for Flammable Refrigerants (HVAC)
Want to continue the conversation?
Participate in DOE Building Technologies Peer Review in April 30 - May 4 (1-2 days only)
Participate in technology roadmapping exercises/ workshops
Help DOE develop a new research proposal for and IEA Annex focused on supermarket refrigeration Join the U.S. IEA National Team (IEA USNT)
Contact me: Tony Bouza, [email protected]
Developments in Motors & Condensers
Michael Deru, NREL
High-Efficiency Motor Testing
Michael Deru, National Renewable Energy Laboratory Grant Wheeler, National Renewable Energy Laboratory
Partners:Walmart Stores, Inc.Software Motor Corporation
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Air-Cooled Refrigeration Condensers
18 fans with 1.5 hp motors
Standard technology Constant speed induction motors – 10%-12% of load VFD with induction motors – 5%-7% of load
Air-Cooled Refrigeration Condenser Performance
A New Type of High-Efficiency Motor
High Rotor Pole Switched Reluctance Motorfrom Software Motor Corporation (SMC)
Efficiency Comparison
87.6% 88.0%89.0% 89.1% 89.5% 89.9% 90.3% 90.3% 90.6% 90.7% 90.8% 90.6% 91.1%
67.7%
70.5%
72.5%74.3%
76.0%77.6%
78.4%79.2%
80.1% 80.8% 81.4%
65%
70%
75%
80%
85%
90%
95%
600 800 1000 1200 1400 1600 1800
Effic
ienc
y (%
)
Motor Speed (rpm)
Efficiency comparison between1hp SMC Vulcan Motor and1hp NEMA Premium motor delivering 4Nm Torque
SOFTWARE MOTOR CORPORATION: CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR DISCLOSED EXCEPT PURSUANT TO A WRITTEN AGREEMENT
Condenser Fan Project
Project PlanReplace half of the fan motors with HRSRMs (9 of each motor type)Phase I: side-by-side testing with same control signalPhase II: Optimize control with HRSRM controller (timeline TBD)
HRSRMHigh-efficiency induction motor
Condenser Fan Project
Motor RPM Legacy Condenser System Power
HRSRM Condenser System Power
Percent Difference
850 rpm 1.04 kW 0.73 kW -30%
Preliminary Results per Motor
Phase II Ideas• Variable Head Pressure Control
• Traditional• Individual motor control
• Adjustable temperature difference for VHPC• Predictive control algorithm to optimize power of the refrigeration system
Efficiency Opportunities with Natural and Alternative Refrigerants
Danielle Wright, NASRC
Presenter
Danielle WrightExecutive DirectorNASRC
Danielle has worked in the energy efficiency and sustainability field for the past ten years. She has experience working with the grocery and food retail sector to optimize and reduce overall energy consumption with a specific focus on refrigeration.
Prior to her role at NASRC, Danielle oversaw the EnergySmart Grocer program, a third party energy efficiency program serving the grocery sector in the Pacific Gas & Electric (PG&E) territory. Under her management, the program saved over 100 million kWh from energy efficiency retrofits primarily in refrigeration.
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The NASRC
Our mission is to overcome the barriers to the adoption of natural refrigerants
Cost Service Readiness
ROI Contractors & Techs
Codes & Standards
Activities
Progress Groups
Hurdles
Codes & Standards
PolicyBest Practices
Utilities & EE
• System components
• Refrigerants Access
• Installation
• Utility incentive programs
• State funding GHG reduction
• Trainings• Service
network• CO2
Certification• Service
standards
• Case studies• CO2
Installation spec
• CO2 retrofit guide
• Safety standards
• Eng standards
• Building codes
• Quarterly policy updates
• SNAP Applications
• Task forces
NASRC Members
What are the drivers?
Montreal Protocol - Kigali Amendment Global HFC phase-down starting in 2019 90% reduction by 2050
EPA Significant New Alternatives Policy (SNAP) Program Common refrigerants de-listed (banned) R134a, R404a and R407a
California Air Resources Board (CARB) 2030 – Reduce HFC emissions by 40% below 2013 levels 2021 – Prohibit refrigerants >150 GWP in new equipment 2020 – Restrict sales of refrigerants >2500 GWP 2024 – Restrict sales of refrigerants >1500 GWP
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Low-GWP Adoption
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Low-GWP Systems
System Type GWP Capital Investment Maintenance Energy
Performance
NH3/CO2 Cascade
R290/CO2 Cascade -
CO2 Transcritical
Self-Contained
CO2 Transcritical Performance
• Can have energy penalty in warmer climates
• Technologies can improve energy performance at additional cost premium
• Parallel compression• Ejectors• Adiabatic gas coolers
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Benefits Very low charge Very low leak rates Merchandizing flexibility Reduced install and
maintenance costs Energy savings 30 - 50%
over baseline Challenges 150 gram limit =
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Self-Contained Systems
System Type R290 Self-Contained
R404a Traditional
DX
Refrigerant Charge (lbs.) 110 2,500
Leak rate 2% 15%
Refrigerant GWP 3 3,800
Annual Leak (CO2 eq) 7 1,425,000
Stakeholder workshop held on January 9, 2018 Goal to increase charge limit of R290 in self-
contained cases IEC adopting 500 grams UL, ASHRAE, EPA SNAP
Developed NASRC Action Plan More to come! Webinar and in-person event
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NASRC R290 Workshop
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Funding Mechanisms
Energy Efficiency
• Utility Incentives
• EPIC Program
• SMUD NRIP Program
GHG Emission Reduction
• National or State SEPs
• SMUD NRIP Program
• CARB SLCP
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Incentives for Energy Efficiency
Refrigerant Regulations
New Low-GWP
Refrigeration Systems
Potential for
Energy Savings
Custom Tool• Develop broadly accepted
tool to predict and validate savings for low-GWP systems
• Workshop held Sep 2017
Deemed Measures1. Hydrocarbon self-contained2. CO2 condensing units3. Propane condensing units4. EEVs5. Case controls6. Parallel compression7. Ejectors8. Adiabatic gas coolers9. Mechanical sub-cooling
Get involved! Join NASRC progress groups Codes & Standards Utilities & Energy Efficiency Contractors & Service Technicians
Join NASRC task force Expedited codes update Incentives for low-GWP systems
Sign up for newsletter to receive latest events and updates information
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What Can You Do?
Q & A
Speaker Contact Information
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Michael DeruNational Renewable Energy Laboratory
303-384-7503 [email protected]
Tony BouzaDepartment of Energy
Danielle WrightNorth American Sustainable Refrigeration Council
Better Buildings Contact Information
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Holly CarrPartnerships & RFSG Sector Lead
Zach AbramsRetail Account Manager
Cecilia GovrikFood Service & Grocery Account Manager
Jamarcus BrewerRetail Subject Matter Expert
Adam SpitzFood Service Subject Matter Expert
