an overview of the rolls-royce sco -test rig project at...
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©2018-19 Cranfield University, School of Aerospace, Transport & Manufacturing, Centre for Propulsion EngineeringThe information presented here is the property of the Cranfield University Rolls-Royce UTC for Aero System Design, Integration & Performance and may not be copied or
communicated to a third party, or used for any purpose other than that for which it is supplied without the express written consent of Cranfield University and Rolls-Royce plc.
An Overview of the Rolls-Royce sCO2-Test Rig Project at Cranfield University
Ian BunceMichael Johnston
6th International Supercritical CO2 Power Cycles SymposiumMarch 27 - 29, 2018, Pittsburgh, Pennsylvania
Eduardo AnselmiIan BunceVassilios PachidisPavlos ZachosMichael Johnston
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• Introduction
• Test rig development
• Lessons learned
• Questions
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Design, build and commission a closed loop s-CO2system to enable critical component testing and whole cycle demonstration of a representative waste heat recovery system for marine GTs
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• Design s-CO2 cycles for waste heat recovery (marine applications)– Select cycle for proof-of-concept
• Understand their design point, off-design and transient behaviour across a range of operating conditions
• Identify critical components and key requirements for rig testing
• Define full scope of rig testing
• Design & commission a s-CO2 closed loop test facility
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Fluid CO2: Fluid Properties estimated using NIST REFPROP
Cooler
Expa
nsio
n D
evic
e
Cooler
Expa
nsio
nD
evic
e
sCO2 Compression loop test SANDIA sCO2 Gas Triangle Innovate UK
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Evaporator
Sampler Bottle
Gas Cooler
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Stage 1A
Stage 1B
Stage 2A
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Period Stage Components Outcomes
March GTCirculation compressor, gas
cooler, expansion valve 1 (refrigeration)
- De-risk s-CO2 loop.- Demonstrate component/rig
robustness and proof of concept.
June 1A Circulation compressor, pre cooler, expansion valve 2
- Characterize pre cooler performance.
- Validation of SIMULINK models.
August 1B MHEX, fan, circulation compressor, expansion valve 3
- Test MHEX performance: Cold air runs only.
December 2A Centrifugal compressor, post cooler, expansion valve 4
- De-risk compressor installation.- Develop supporting technology for
turbomachinery design
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Initial TRL 1
TRL 2
TRL 3
Target TRL 4
TRL 5
TRL 6
TRL 7
TRL 8
TRL 9
Progressiveconcept
development
General lessons
• Costing of components • Identifying an appropriate supply
chain • Managing procurement
processes
Specific lessons
• Modelling – Control systems• Compressor design• Main heat exchanger design
MHEX
Analytical modelsControl systems
Compressor subsystems
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Development of analytical models in SIMULINK to predict test rig:• Steady state performance• Part load performance• Transient response
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Initial compressor studies - 2016
Impeller studies - 2017
Preliminary simulation results using the “real gas” model at inlet conditions of P = 7.7 MPa, T = 691.2 K - 2018
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Successful hybrid design (PCHE + FPHE)
First MHEX released to manufactured - 2018
Preliminary designs tested
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This research has received funding from Innovate UK under project
reference 101982. The authors are grateful to Rolls-Royce plc and
Heatric Division of Meggitt UK Ltd organisations for their support during
the project. The authors would like to thank Robert Collins, Mark
Hassan, Anmol Manohar, Joseph Palmer, Pawel Safuryn and Russell
Limbrick for their input into this research effort.
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…. Thank you
Friday 8th December 2017 Achieved supercritical CO2 conditions for the first time