best student award 12th iea heat pump conference 2017 · best student award 12th iea heat pump...
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Best student award
12th IEA Heat Pump Conference 2017
ORC driven Heat Pumps running with gas supported turbomachinery : potential and optimization
Mounier VioletteLaboratory for Applied Mechanical Design
Ecole Polytechnique Fédérale de Lausanne
6/6/20171
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Why focusing research on Heat Pumps?
6/6/2017 2
Electricity driven heat pumps
Advantages
Highly efficient
Mature market
Challenges
CO2 footprint
Rising electricity demand
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Why focusing research on Heat Pumps?
6/6/2017 3
Thermally driven heat pumps
Advantages
Control of the energy source
Decreased elec. demand
Main technologies
Sorption
Gas fired heat pumps
…
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ORC Driven Heat Pumps (HP ORC) : Exploring the potential
6/6/2017 4
Condenser C T
HP evaporator
ORC evaporatorNovelty 1
ORC driven
Novelty 2 :
Oil-free micro-turbocompressor
What is the full potential of this technology for domestic heating ?
Thermodynamics
Thermoeconomics
Heat Transfer
Turbomachineries
Rotordynamics
Design methodology
Cogeneration
Low temp sources
High efficiency
High power density
Simulation Experimental
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Integrated Multi Objective Optimization
6/6/2017 5
Design point
Heat exchanger
TurbomachinesCost
Performance
FeasibilityBearings
HP-ORC
…
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Integrated and optimized design of the turbocompressor
6/6/2017 6
Performance Feasibility
What are the most critical components to optimize ?
How to speed up the optimization process and keeping the accuracy ?
Can we increase the design robustness ?
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Integrated and optimized design of the turbocompressor
6/6/2017 7
What are the most critical components to optimize ?
How to speed up the optimization process and keeping the accuracy ?
Can we increase the design robustness ?
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Integrated and optimized design of the turbocompressor
6/6/2017 8
What are the most critical components to optimize ?
How to speed up the optimization process and keeping the accuracy ?
Can we increase the design robustness ?
![Page 9: Best student award 12th IEA Heat Pump Conference 2017 · Best student award 12th IEA Heat Pump Conference 2017 ORC driven Heat Pumps running with gas supported turbomachinery : potential](https://reader036.vdocuments.net/reader036/viewer/2022080719/5f78f13323a5a203212f5429/html5/thumbnails/9.jpg)
Integrated and optimized design of the turbocompressor
6/6/2017 9
What are the most critical components to optimize ?
How to speed up the optimization process and keeping the accuracy ?
Can we increase the design robustness ?
![Page 10: Best student award 12th IEA Heat Pump Conference 2017 · Best student award 12th IEA Heat Pump Conference 2017 ORC driven Heat Pumps running with gas supported turbomachinery : potential](https://reader036.vdocuments.net/reader036/viewer/2022080719/5f78f13323a5a203212f5429/html5/thumbnails/10.jpg)
Integrated and optimized thermodynamic design
6/6/2017 10
What are the optimum thermodynamic components design ?
What are the best configurations ?
Is this technology competitive with typical TDHPs ?
Performance Cost
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Integrated and optimized thermodynamic design
6/6/2017 11
What are the optimum thermodynamic components design ?
What are the best configurations ?
Is this technology competitive with typical TDHPs ?
COP vs 𝛈𝐞𝐱𝐞 ?
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Integrated and optimized thermodynamic design
6/6/2017 12
What are the optimum thermodynamic components design ?
What are the best configurations ?
Is this technology competitive with typical TDHPs ?
Thot = 120 ºC Thot = 180 ºC HP-ORC vs
Absorption
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Integrated and optimized thermodynamic design
6/6/2017 13
What are the optimum thermodynamic components ?
What are the best configurations ?
Is this technology competitive with typical TDHPs ?
Performance Cost Feasibility
Full system optimization
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Experimental validation
6/6/2017 14
Turbocompressor test bench
First proof of concept with air (Nrot > 150 krpm) Check rotordynamics models with air High-precision balancing knowledge (<1 micron)
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Experimental validation
6/6/2017 15
Promising results
COP > 1.5
Qc = 40 kW
Nrot = 200 krpm
Thermal test bench
Proof of concept with R-134a Validation of turbomachineries 1D models Identification of technical challenges
Turbine 1D validation
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Conclusion
6/6/2017 16
Experimental validation
Design methodology
ORC driven Heat Pump
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Micro-turbocompressor
Market
investigation
Various
applications
Optimization
Cross-disciplinary
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Conclusion
6/6/2017 17
Experimental validation
Design methodology
Insert your technology here
Market
investigation
Various
applications
Optimization
Cross-disciplinary
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Thank you for your attention
Any questions ?