Hugo Faria | 11 th September 2007 H 2 High Pressure On-Board Storage Considering Safety Issues...
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Transcript of Hugo Faria | 11 th September 2007 H 2 High Pressure On-Board Storage Considering Safety Issues...
Hugo Faria | 11th September 2007
H2 High Pressure On-Board Storage Considering Safety Issues
André Vieira Hugo Faria Rui de Oliveira Nuno Correia António T. Marques
Hugo Faria | 11th September 2007
Contents
• Introduction
• Pressure Vessels for H2 Storage
• On-line Monitoring Systems
• Conclusions
Hugo Faria | 11th September 2007
Introduction
• create a knowledge based platform for H2 economy
• production > storage > logistics > utilization
• prototyping vessels for high-pressure gaseous storage of H2
http://www.h2eden.com
Portuguese EDEN Project
Hugo Faria | 11th September 2007
Introduction
• composite materials
Know-how on pressure vessels development
Hugo Faria | 11th September 2007
Introduction
• composite materials
• numerical modelling
Know-how on pressure vessels development
Hugo Faria | 11th September 2007
Introduction
• composite materials
• numerical modelling
• filament-winding technologies
Know-how on pressure vessels development
Hugo Faria | 11th September 2007
Introduction
• composite materials
• numerical modelling
• filament-winding technologies
• vessels prototyping and manufacture
Know-how on pressure vessels development
Hugo Faria | 11th September 2007
Introduction
• direct strain measurement (strain gauges)
• acoustic emission
• optical fibre’s sensors
Know-how on monitoring systems
Hugo Faria | 11th September 2007
Pressure Vessels for H2 Storage
• gaseous storage
• no specific studies on thermal environment
• high pressure storage conditions (up to 700bar)
• need of validated design methodology
• materials permeability to H2 molecules
• steel or aluminium liners or inner covers
• reliability of these vessels for mid-term applications
Main Concerns
Hugo Faria | 11th September 2007
Pressure Vessels for H2 Storage
steel liner pattern calculation/generation
200bar Prototype
Hugo Faria | 11th September 2007
Pressure Vessels for H2 Storage
CAD model meshed model FEM analysis
200bar Prototype
Hugo Faria | 11th September 2007
Pressure Vessels for H2 Storage
part manufacture 26 litres prototype
200bar Prototype
Hugo Faria | 11th September 2007
On-line Monitoring Systems
• embedment capability on composite reinforcement
• able to support processing conditions (temperature and pressure
• miniaturization to induce low stress concentration
• no degradation during service (corrosion, etc)
• monitoring strains (3%) at low frequency
• monitoring damage (AE events) at high frequency (20 kHz-1MHz)
• periodic evaluation of damage by measuring sound propagation
Sensors Requests
Hugo Faria | 11th September 2007
• monitoring of strain and temperature
• embedment capability
• multiplexing ability
• immune to electric and magnetic fields
• simplicity of interrogation scheme
• small maximum allowable
strain (for glass fiber)
ΛB
Emitted broad band light
Back reflected narrow band light
Transmitted light
2B eff Bn Bragg condition λB – central wavelength of reflected light
neff – effective refractive index ΛB – grating structure period
Bz H F T
BK T K T
Kε, KT – strain and temperature sensitivity
εz – axial strain
αH, αF – thermal expansion of host and fiberΔT – temperature variation
On-line Monitoring Systems FBG Sensors
Hugo Faria | 11th September 2007
• sensitive to transient phenomenon (AE)
• embedment capability
• no Multiplexing ability
• immune to electric and magnetic fields
• complexity of interrogation scheme
• small maximum allowable strain
Capillary tube AdhesiveOptical fiber
On-line Monitoring Systems EFPI Sensors
Hugo Faria | 11th September 2007
• embedment capability
• don’t allow quasi-static measuring of strain
• no Multiplexing ability
• sensitive to electric and magnetic fields
• complexity of interrogation scheme (amplification needed)
On-line Monitoring Systems Piezoelectric Sensors
Hugo Faria | 11th September 2007
• embedment capability
• allow quasi-static measuring of strain
• no Multiplexing ability
• sensitive to electric and magnetic fields
• flexibility dependent of the support used
On-line Monitoring Systems Piezoresistive Sensors
Hugo Faria | 11th September 2007
Conclusions
• EDEN project is developing regional competences preparing for the H2 economy
• high pressure gaseous storage is only one of the work packages
• the main challenge for the composite materials sub-group will be to pass from its experience on user-friendly fluids to H2
• the experience in on-line monitoring systems will allow us to develop cheaper prototypes both in terms of burst test criteria and daily operating safety issues
Hugo Faria | 11th September 2007
Thank you for your attention