Research Centre Rez sCO2 experimental loop and CVR R&D activities Aleš Vojáček 01.09.2017
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Research Centre Rez
sCO2 experimental loop and
CVR R&D activities
Aleš Vojáček
01.09.2017
Providing a facility to study key aspects of the
Brayton cycle (heat transfer, performance of
compressor and turbine, erosion, corrosion etc.)
with wide range of parameters: temperature up to
550°C, pressure up to 30 MPa
The sCO2 loop is flexible, easy to modify and
suitable for testing key components of the Brayton
cycle:
compressor and turbine
heat exchangers
heaters
valves
Goals SUSEN sCO2 loop
1
SUSEN sCO2 loop
2
- High pressure section
- Low pressure section
Circulation pump
Pressure pulse dumper
Electrical pre-heater
Low temperature HX
High temperature HX
Test-section with
the main heater
Oil cooler Reduction valveMain water cooler
CVR S-CO2 loop (SUSSEN)Max. operating temperature: 550˚C
Max. pressure at high pressure site: (25) 30 MPa
Max. pressure at low pressure site: (12,5) 15MPa
Max. flow rate: 0,4 kg/s
Total heating power: 110 kW
Power of the pre–heater : 20 kW
Power of the main heater : 90 kW
SUSEN sCO2 loop
3
SUSEN sCO2 loop
4
SUSEN sCO2 loop
5
Manufacturing process
Pressure vessels
Heat exchangers, heaters, coolers, pipeline system….
Other parts are purchased and assembled in CVR
All pumps (CO2 , oil, H2O,), oil cooler, oil HX, valves, vacuum
pump, heatings rods, isolation… etc.
GoFastR / FP7 / 2010-2013 / finished
Optimisation of CO2 cycle for GFR reactor
SUSEN – sCO2 loop / finishing
Design, construction, calculations, fabrication,
commissioning
COPRO / TAČR / 2014 - disapproved
Partners – CVR, UJV, UJV – EGP, DOOSAN
Goals – cycle optimization, basic design of the turbine,
material selection, material testing, ...
CVR projects
6
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
The sCO2 loop was used for testing heat transfer
components, particularly air heat sink. Further, the turbo
machine (compressor, turbine) is tested to verify the
numerical results of the performance map.
CVR projects
7
http://www.sco2-hero.eu/
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Experimental data – air heat sink
CVR projects
8
T_CO2_in=166°C
V_air=12 000 m3/h
9 000 m3/h
6 000 m3/h
12 000 m3/h
p_CO2_in=7.8 MPa
T_CO2_out=34.5°C 34.9°C 35.8°C
T_air_out=50°C55°C
65°C
T_air_in=23.5°C
3 min.
6.4 MPa
7.8 MPa 7.8 MPa
CVR projects
9
Modeling and simulation play a key role in the design
phase and performance optimization of the sCO2 loop
Modeling TH tools for sCO2 loop
Modelica simulation language (object-oriented,
equation based) in Dymola environment
complex systems, e.g., systems containing
mechanical, electrical, electronic, hydraulic, thermal,
control, electric power or process-oriented
subcomponents
Open source - Modelica library – ClaRa (Clasius-
Rankine cycles)
Dynamic investigation of power processes
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Dynamic model of air heat sink
CVR projects
10
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Air heat sink experimental data vs Dynamic model
CVR projects
11
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Air heat sink experimental data vs Dynamic model
CVR projects
12
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Air heat sink experimental data vs Dynamic model
CVR projects
13
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Air heat sink experimental data vs Dynamic model
CVR projects
14
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Air heat sink experimental data vs Dynamic model
CVR projects
15
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Air heat sink experimental data vs Dynamic model
CVR projects
16
sCO2-HeRo / H2020 / 2015 – 2018 / ongoing
Operating scheme for TG testing
CVR projects
17
POSITIF / TAČR / 2017 – Czech – China
colaboration/ disapproved
Physical properties, heat transfer, critical flow and dynamic
oscilation in super-critical media
Partners – CVR, SJTU, (CVUT)
sCO2-Flex - project for demonstration unite /
H2020 – start in 2018
develop and optimize the design of a 25 MWe sCO2 Brayton
cycle and its main components (boiler, HX, turbomachinery,
instrumentation and control strategies).
Partners: EDF (coordinator), GE, Fives Cryo, Politecnico di
Milano, Centro Sviluppo Materiali S.p.A. , University of
Duisburg-Essen, CVR, University of Stuttgart, ZABALA
Innovation Consulting
CVR activity proposal – sustainability of sCO2 SUSEN loop
Cycle calculations, TH code validation and/or benchmarking, HX
testing, corrosion tests
CVR projects
18
Fluoride salt cooled High temperature Reactor /
Molten Salt Reactor - potential applications for
small modular reactors
FHR/MSR - potential applications –
ongoing
19
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