Small-Scale PHES Demonstration Team Members: SwRI & Malta Inc. PI: Natalie Smith, SwRI Project Vision Total project cost: $2.5M Current Q / Total Project Qs Q9 / Q12 Bringing the Brayton Battery to life: Solving system integration and operation challenges Energy Summit May 24-27, 2021
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Small-Scale PHES Demonstration
Team Members: SwRI & Malta Inc.
PI: Natalie Smith, SwRI
Project Vision
Total project cost: $2.5M
Current Q / Total Project Qs Q9 / Q12
Bringing the Brayton Battery to life:
Solving system integration and operation challenges
Energy Summit
May 24-27, 2021
The Concept: Pumped Heat Energy Storage (PHES)
PHES Value Proposition
‣ 10+ hours of storage
‣ Separation of engine and storage
‣ Well-established component technologies
‣ Safer than other thermal-based ES technologies
‣ Potential for high round trip efficiency (RTE)
Technology Challenges
‣ First implementation challenges
‣ Control and operational unknowns
– Steady state
– Transients
‣ Charge compressor
‣ Reverse flow heat exchangers
1
Charge Mode Use excess energy to run heat pump
& store energy in hot and cold reservoirs
Discharge Mode Use thermal reservoirs to run heat engine
& generate power
The Concept: Pumped Heat Energy Storage (PHES)
2
Charge Mode Use excess energy to run heat pump
& store energy in hot and cold reservoirs
Discharge Mode Use thermal reservoirs to run heat engine
& generate power
340°C305°C
27°C12°C
340°C305°C
27°C12°C
The Team = SwRI + Malta+ Gas Turbine OEM
3
Benefiting government, industry and the public through innovative science and technology
Meet the Future of Energy Storage
kW-scale demonstration development, transient modelling, and testing
– Example consideration: From ambient conditions with warm oil tanks and ambient coolant tanks, the heat transfer directions will be initially incorrect
Challenges and Potential Partnerships‣ Challenges & Risks:
– COTS Hardware:
• Closing the cycle with COTS hardware while ensuring controllability and optimized system performance
• Complete redesign of COTS hardware to de-risk demonstration operation
– Fast Transients:
• Enabling optimal transient time while protecting hardware
• Extensive transient cycle modelling has informed a phased test matrix
– Next: What does actual implementation look like?
‣ Collaboration:
– Follow-on projects to progress PHES development using our Energy Storage Test Facility including different storage media, conditions, and working fluids
Technology-to-Market
‣ Final Goal: Full-scale system (10 or 100 MW)
demonstration and deployment
‣ Status: Approximately 2024 for a 100 MW system
‣ Accelerate Development:
– Market readiness supported by improved policy and regulation
– Continued iterative component and system improvements to progress the SOA
• Charge compressor
• Molten salt technology
‣ Potential First Markets:
– Power plants in areas with high renewable penetration
Small-Scale PHES Demo
Objective: Demonstrate operation and verify control strategies of a closed air Brayton PHES at lab scale
Outcomes:
‣ Steady state and transient operation data to inform full-scale system design
– Ambient effects
– Sequencing considerations
‣ Dedicated energy storage test facility
– Predicted RTE = 10%
– Storage capacity for 1 hour steady state operation
– 50 kWth
– Discharge Mode generates 5 kW
Cycle Analysis Facility Design Procurement Transient Analysis Assembly Commission Test