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Piezoelectric Energy Harvesting
under air flow excitation
Francesco Petrini*, Konstantinos Gkoumas, Franco Bontempi
france...
What is StroNGER
Francesco Petrini.
francesco.petrini@ustronger2012.com
A spin-off research Company
Founded in November 2012
Operating in the civil and environmental engineering industry
FromNovember2012
The research group of structural analysis and design at Sapienza Univ.
StroNGER – who we are
Franco Bontempi, PhD
StroNGER srl, Scientific Advisor
Prof. of Structural Analysis and Design
Sapien...
Academic research Industry research R&D
University courses Professional courses
Big group Small group
Design consultant ac...
StroNGER S.r.l.
a Spin-off Company (Small Medium Enterprise)
that operates in the Civil Engineering industry.
High-profile...
StroNGER S.r.l.
a Spin-off Company (Small Medium Enterprise)
that operates in the Civil Engineering industry.
High-profile...
Introduction
Francesco Petrini.
francesco.petrini@ustronger2012.com
Research motivation
• Sustainability nowadays is a key issue for structures and
infrastructures
• Over the last few years,...
Energy Harvesting (EH) can be defined as the sum of all those processes that
allow to capture the freely available energy ...
Piezo Energy Harvesters drawback
12
In-Vento2014.June22-252014
Francesco Petrini. Co-founder and Director
francesco.petrin...
Applications for the energy sustainability
EH in buildings – a premise
13
• EH devices are used for powering remote monito...
The EH device:
PiezoTSensor
Francesco Petrini.
francesco.petrini@ustronger2012.com
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 15
a. Steel plate (support)
b. Sensor transm...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 16
In-Vento2014.June22-252014
Advantages fro...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 17
In-Vento2014.June22-252014
PiezoTSensor –...
FEM analysis
Francesco Petrini.
francesco.petrini@ustronger2012.com
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 19
In-Vento2014.June22-252014
PiezoTSensor –...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 20
In-Vento2014.June22-252014
PiezoTSensor –...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 21
PiezoTSensor
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-2
-1
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Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 22
In-Vento2014.June22-252014
PiezoTSensor –...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 23
In-Vento2014.June22-252014
PiezoTSensor –...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 24
PiezoTSensor – tip mass analysis
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Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 25
PiezoTSensor – power production
In-Vento2...
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0.0095 0.014 0.0185 0.023 0.0275 0.032 0.0365 0.041 0.0455 0.05
ΔV(V)
l2 (m)
ΔV
ΔV1-peak
ΔV1-RMS
...
Applications for the energy sustainability
Energy Harvesting for monitoring HVACs operating conditions
Currently:
• Power ...
Francesco Petrini. Co-founder and Director
francesco.petrini@stronger2012.com 28
In-Vento2014.June22-252014
Conclusion – A...
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Energy Harvesting IN VENTO 2014 - Petrini StroNGER.com

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Piezoelectric Energy Harvesting under Air Flow Excitation
by
Francesco Petrini, Konstantinos Gkoumas and Franco Bontempi.

This study focuses on the numerical analysis of a high efficiency Energy Harvesting device, based on
piezoelectric materials, for the sustainability of smart buildings, structures and infrastructures. Before that, a
comprehensive literature review on the topic takes place. The device consists in an aerodynamic fin attached to a
piezoelectric element that makes use of the air flow to harvest energy. The principal utilization of this device is
for energy autonomous sensors, with applications inbridges, transportation networks and smart buildings. The results are corroborated by advanced analytical and numerical analyses (in ANSYS®) that demonstrate the energy harvesting capacity.

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Transcript of "Energy Harvesting IN VENTO 2014 - Petrini StroNGER.com"

  1. 1. Piezoelectric Energy Harvesting under air flow excitation Francesco Petrini*, Konstantinos Gkoumas, Franco Bontempi francesco.petrini@uniroma1.it , francesco.petrini@stronger2012.com -- *Research Associate, School of Civil and Industrial Engineering, Sapienza Università di Roma Via Eudossiana 18 - 00184 Rome (ITALY) tel. +39-06-44585072 StroNGER S.r.l., Co-founder and Director Via Giacomo Peroni 442-444, Tecnopolo Tiburtino, 00131 Rome (ITALY) -- Genova 24 June 2014
  2. 2. What is StroNGER Francesco Petrini. francesco.petrini@ustronger2012.com
  3. 3. A spin-off research Company Founded in November 2012 Operating in the civil and environmental engineering industry
  4. 4. FromNovember2012 The research group of structural analysis and design at Sapienza Univ.
  5. 5. StroNGER – who we are Franco Bontempi, PhD StroNGER srl, Scientific Advisor Prof. of Structural Analysis and Design Sapienza University of Rome Expertise: - Fire Safety Engineering - Forensic Engineering Expertise: - Structural Safety - Structural Identification Expertise: - Wind Engineering - Performance Based Design Chiara Crosti, PhD StroNGER srl, CEO Francesco Petrini, PhD StroNGER srl, Vice Director Stefania Arangio, PhD StroNGER srl, Director Konstantinos Gkoumas, PhD StroNGER srl, Partner Expertise: - Energy Harvesting - Dependability Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 5
  6. 6. Academic research Industry research R&D University courses Professional courses Big group Small group Design consultant activityResearch experience in structural analysis CONVERSION: StroNG points
  7. 7. StroNGER S.r.l. a Spin-off Company (Small Medium Enterprise) that operates in the Civil Engineering industry. High-profile tools and methodologies that lead to structures that fulfill required performances under a resilience and sustainability point of view. StroNGER expertise: • Design and rehabilitation of Civil structures and infrastructures with regard to wind, earthquakes, waves, landslides, fire and explosions. • Disaster resilience assessment. • Advanced numerical modeling of Civil structures and infrastructures. • Forensic engineering. • Sustainability and Energy Harvesting in Civil structures and infrastructures. StroNGER has been recently awarded by the European Space Agency with the space technology transfer permanent award StroNGER S.r.l. was founded in 2012 by researchers from the academic world working in the civil engineering field, each one having more than 10 years of experience in the field www.stronger2012.com info@stronger2012.com Phone: +39 0644585070 Structures of the Next Generation – Energy harvesting and Resilience In-Vento2014.June22-252014
  8. 8. StroNGER S.r.l. a Spin-off Company (Small Medium Enterprise) that operates in the Civil Engineering industry. High-profile tools and methodologies that lead to structures that fulfill required performances under a resilience and sustainability point of view. StroNGER expertise: • Design and rehabilitation of Civil structures and infrastructures with regard to wind, earthquakes, waves, landslides, fire and explosions. • Disaster resilience assessment. • Advanced numerical modeling of Civil structures and infrastructures. • Forensic engineering. • Sustainability and Energy Harvesting in Civil structures and infrastructures. StroNGER has been recently awarded by the European Space Agency with the space technology transfer permanent award StroNGER S.r.l. was founded in 2012 by researchers from the academic world working in the civil engineering field, each one having more than 10 years of experience in the field www.stronger2012.com info@stronger2012.com Phone: +39 0644585070 Structures of the Next Generation – Energy harvesting and Resilience In-Vento2014.June22-252014
  9. 9. Introduction Francesco Petrini. francesco.petrini@ustronger2012.com
  10. 10. Research motivation • Sustainability nowadays is a key issue for structures and infrastructures • Over the last few years, many promising applications of Energy Harvesting (EH) have appeared, not only in academy but also in the design practice • In the civil engineering field, the energy obtained by EH devices can be used in different applications (e.g. alimentation of monitoring sensors) focusing at the energy sustainability Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com In-Vento2014.June22-252014 10
  11. 11. Energy Harvesting (EH) can be defined as the sum of all those processes that allow to capture the freely available energy in the environment and convert it in (electric) energy that can be used or stored. Harvesting Conversion Use Storage Energy harvesting - Overview Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com Resources Sun Water Wind Temperature differential Mechanical vibrations Acoustic waves Magnetic fields … Extraction systems Magnetic Induction Electrostatic Piezoelectric Photovoltaic Thermal Energy Radiofrequency Radiant Energy In-Vento2014.June22-252014 11
  12. 12. Piezo Energy Harvesters drawback 12 In-Vento2014.June22-252014 Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 12
  13. 13. Applications for the energy sustainability EH in buildings – a premise 13 • EH devices are used for powering remote monitoring sensors (e.g. temperature sensors, air quality sensors), also those placed inside heating, ventilation, and air conditioning (HVAC) ducts. • These sensors are very important for the minimization of energy consumption in large buildings Image courtesy of enocean-alliance® http://www.enocean-alliance.org Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 13 In-Vento2014.June22-252014
  14. 14. The EH device: PiezoTSensor Francesco Petrini. francesco.petrini@ustronger2012.com
  15. 15. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 15 a. Steel plate (support) b. Sensor transmitter module c. Piezoelectric bender d. Fin e. Temperature probe f. Tip mass Proposal of space technology transfer for the design, testing, production and commercialization of a self-powered piezoelectric temperature and humidity sensor (PiezoTSensor), for the optimum energy management in building HVAC (Heating, Ventilation and Air Condition) systems. In-Vento2014.June22-252014 PiezoTSensor © HVAC upper wall HVAC lower wall HVAC lower wall
  16. 16. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 16 In-Vento2014.June22-252014 Advantages from the vortex shedding effect A body, immersed in a current flow, produces a wake made of vortices that periodically detach alternatively from the body itself with a frequency ns. ݂௦௅ ‫ݐ‬ ൌ ‫ܣ‬௦ ∙ sin 2ߨ ∙ ݊௦‫ݐ‬ ݊௦ ൌ ܵ‫ݐ‬ ∙ ‫ݒ‬௠ ܾ ‫ݒ‬௖௥ ൌ ݊௜,௅ ∙ ܾ ܵ‫ݐ‬ ‫ܨ‬௅.௜ ‫ݏ‬ ൌ ݉ ‫ݏ‬ ∙ 2 ∙ ߨ ∙ ݊௜,௅ ∙ ߶௜,௅ ‫ݏ‬ ∙ ‫ݕ‬௣௅,௜ ∙ ‫ܥ‬்ோ,௜ ݊௜,௅ ൌ ݊௦ ‫ݒ‬௠ ൌ ‫ݒ‬௖௥ ‫ݒ‬ ൌ 2 ൊ 5 ݉/‫ݏ‬ AVOID THE DRAWNBACK: By setting the aerodynamic fin to undergo in VS regime we can obtain the maximum efficiency in terms of energy extraction CNR-DT 207/2008
  17. 17. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 17 In-Vento2014.June22-252014 PiezoTSensor – development plan Numerical model Analytical model Experimental test FEM structural model CFD flow model Field tests Commercialization © IPR Patent
  18. 18. FEM analysis Francesco Petrini. francesco.petrini@ustronger2012.com
  19. 19. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 19 In-Vento2014.June22-252014 PiezoTSensor – parametric analysis LEAD ZIRCONATE TITANATE Density ρ 7800 kg/m3 Young Modulus E 6.6 x103 N/m2 Poisson ratio υ 0.2 Relative dielectric constant kT 3 1800 Permittivity ε 1.602 x10-8 F/m Piezoelectric constant d31 -190 x10-12 m/V (C/N) ELEMENTS DIMENSIONS VALUES (m) BENDER l 0.06÷0.2 m b 0.001÷0.08 m d 0.02÷0.05 m a 0.01 PIEZOELECTRIC PATCH l1 0.0286 b1 0.0017 d1 0.0127 ADDED MASS l2 variable b2 0.01 d2 d MATERIAL E (N/m2) ρ (kg/m3) Aluminium 6.4 ∙ 10ଵ଴ 2700 Lead 4 ∙ 10ଵ଴ 7400 © In collaboration with Sara Ferri
  20. 20. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 20 In-Vento2014.June22-252014 PiezoTSensor – parametric analysis Design of a bender made of a certain material with a piezoelectric patch, which can experiment the resonance (lock-in) with the external force deriving from the Vortex Shedding phenomenon. The lock-in conditions produce the highest level of power. ࢔࢏,ࡸ, ࢜ࢉ࢘, ࡲࡸ࢔࢏,ࡸ, ࢜ࢉ࢘, ࡲࡸ Dimensions Materials Configurations ∆ࢂ, ࡼ∆ࢂ, ࡼ Dimensions Added mass Design points © In collaboration with Sara Ferri
  21. 21. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 21 PiezoTSensor -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ΔV2(V) t (s) (x10-3) ΔV2 (Length) l=0.15 l=0.16 l=0.17 l=0.18 l=0.19 l=0.20 Voltage output for different bender lengths In-Vento2014.June22-252014 © In collaboration with Sara Ferri
  22. 22. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 22 In-Vento2014.June22-252014 PiezoTSensor – parametric analysis 0 2 4 6 8 10 12 0.02 0.03 0.04 0.05 CriticalVelocity(m/s) d (m) Critical Velocity (Width) The Critical Velocity increases with the thickness and the width, it decreases with the length. 0 5 10 15 20 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 CriticalVelocity(m/s) b (m) Critical Velocity (Thickness) 0 10 20 30 40 50 60 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0.2 CriticalVelocity(m/s) l (m) Critical Velocity (Length) © Velocity range in HVACs ‫ݒ‬ ൌ 2 ൊ 5 ݉/‫ݏ‬ In collaboration with Sara Ferri
  23. 23. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 23 In-Vento2014.June22-252014 PiezoTSensor – mass analysis (material) High frequencies High critical velocities b=0.003 b=0.004 b=0.005 b=0.006 0 50 100 150 200 250 l=0.1 5 l=0.1 6 l=0.1 7 l=0.1 8 l=0.1 9 l=0.2 0 Frequency(Hz) Frequency (Aluminium) 200-250 150-200 100-150 50-100 0-50 b=0.003 b=0.004 b=0.005 b=0.006 0 5 10 15 l=0.1 5 l=0.1 6 l=0.1 7 l=0.1 8 l=0.1 9 l=0.2 0 CriticalVelocity(m/s) Critical Velocity (Aluminium) 10-15 5-10 0-5 © Velocity range in HVACs ‫ݒ‬ ൌ 2 ൊ 5 ݉/‫ݏ‬ In collaboration with Sara Ferri
  24. 24. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 24 PiezoTSensor – tip mass analysis 0.00 0.01 0.02 0.03 0.04 0.05 0.06 2 2.5 3 3.5 4 4.5 5 MassLegnth(m) Critical Velocity (m/s) Mass length (Vcr) 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.15 0.16 0.17 0.18 0.19 0.2 Masslength(m) l (m) Mass Length (Bender Length) 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.003 0.0035 0.004 0.0045 0.005 0.0055 0.006 Masslength(m) b (m) Mass Length (Bender Thickness) ‫ݒ‬௖௥ ൌ ‫̅ݒ‬௖௥ ݊ത௦ ൌ ‫̅ݒ‬௖௥ ∙ ܵ‫ݐ‬ ܾ ൌ ݇ ݉ഥൗ ݊௜ ൌ ݇ ݉ൗ ∆݉ ൌ ݉ഥ െ ݉ ൌ ݇ ݊௜ ଶ െ ݊തଶ ݊തଶ݊௜ ଶ In-Vento2014.June22-252014 © In collaboration with Sara Ferri
  25. 25. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 25 PiezoTSensor – power production In-Vento2014.June22-252014 0 5 10 15 20 25 30 0.15 0.16 0.17 0.18 0.19 0.2 Power(µW) l (m) Power (Length) P1-PEAK P1-RMS P2-PEAK P2-RMS 0 10 20 30 40 50 60 70 0.003 0.004 0.005 0.006 Power(μW) b (m) Power (Thickness) P1-PEAK P1-RMS P2-PEAK P2-RMS 0 5 10 15 20 25 30 2 3 4 5 Power(µW) Critical Velocity (m/s) Power (vcr) PEAK RMS FICTITIOUS MATERIAL Young Modulus E 3.45 x1010 N/m2 Density ρ 7000 kg/m3 ܲ ൌ ∆ܸଶ ܴ Rൌ 1000 Ω © In collaboration with Sara Ferri
  26. 26. 0 2 4 6 8 10 12 14 16 18 0.0095 0.014 0.0185 0.023 0.0275 0.032 0.0365 0.041 0.0455 0.05 ΔV(V) l2 (m) ΔV ΔV1-peak ΔV1-RMS ΔV2-peak ΔV2-RMS 0 50 100 150 200 250 0.0095 0.014 0.0185 0.023 0.0275 0.032 0.0365 0.041 0.0455 0.05 Power(µW) lnec (m) Power P1-PEAK P1-RMS P2-PEAK P2-RMS VOLTAGE (V) POWER (µW) PEAK 15.4 237.2 RMS 11.23 126.25 Dimensions Values Length l 0.17 m Thickness b 0.005 m Width d 0.03 m Added mass (kg) 0.017÷0.189 Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 26 In-Vento2014.June22-252014 Summary In collaboration with Sara Ferri
  27. 27. Applications for the energy sustainability Energy Harvesting for monitoring HVACs operating conditions Currently: • Power is provided by batteries or EH devices based on thermal or RF methods • Sensors work intermittently (to consume less power ~ 100µW) An EH sensor based on piezoelectric material has several advantages being capable to provide up to 10-15 times more power than currently used devices leading to additional applications or longer operation time. Image courtesy of enocean-alliance® http://www.enocean-alliance.org In-Vento2014.June22-252014 Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 27
  28. 28. Francesco Petrini. Co-founder and Director francesco.petrini@stronger2012.com 28 In-Vento2014.June22-252014 Conclusion – Advantages VS competitors • PiezoTSensor harvests a higher amount of energy from air flow, and thus has a higher autonomy, something that can lead to a higher sampling rate. • PiezoTSensor generates energy from an intrinsic characteristic of HVAC systems (the air flow inside the ducts). • Competitors • EnOceanTM ECT 310 Perpetuum • POWERCASTTM P1110 Powerharvester Receiver • Distech ControlsTM SR65 AKF - Duct Temperature
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