6 th October 2016 George Gibberd, MEng., C.Eng., MIMechE Everoze - - PowerPoint PPT Presentation

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6 th October 2016 George Gibberd, MEng., C.Eng., MIMechE Everoze - - PowerPoint PPT Presentation

Oct 03, 2022 42 likes •607 views

University of Bristol 6 th October 2016 George Gibberd, MEng., C.Eng., MIMechE Everoze & Partners Bristol www.everoze.com Congratulations! Youve chosen Engineering! Youve chosen Bristol You can make a career out of

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University of Bristol 6th October 2016

George Gibberd, MEng., C.Eng., MIMechE Everoze & Partners Bristol www.everoze.com

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Congratulations!

 You’ve chosen Engineering!  You’ve chosen Bristol  You can make a career out of decarbonisation  As a renewables engineer:

 you will never be unemployed  you should never be bored  you will be challenged to the hilt  you get to play with some fantastic “big boys toys”  you will make a real difference to society  you will contribute the nation’s wealth  you will never be very rich………

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 but neither ……….

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Be prepared for change

 Huge change in 30 years:

 No mobile phones  No laptops  No internet  No google  No antisocial media

 You will see even greater changes  As engineers you will be behind those changes

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Wind Energy 30 years ago

Picture: Courtesy Gary Johnson

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My Career - Hydropower

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2000MW coal plant

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Performance testing & emissions

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Nuclear

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UK Tidal Stream Resource

3-6GW UK Tens of GW worldwide + Run of river

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Tidal Stream

  • Seaflow Project
  • 300kW tidal stream generator
  • Severn estuary, 2003
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Seaflow statistics

  • 11m rotor diameter.
  • 16m LAT, 11m tidal range (note surface

tip clearances)

  • MSP ~5.4kt. Design Hs 7m.
  • Access by RIB to ladder on pile.
  • Weather-limited.
  • OEM access for repairs proved difficult.
  • Power and load fluctuations first

identified, characteristics of tidal machines.

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Seaflow rotor

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Seaflow installation

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SeaGen 1.2MW twin rotor

  • Strangford Lough narrows - 2008
  • Twin 16m diameter rotors.
  • 26m water, 3.2m tidal range.
  • MSP ~7.3t. Minimal wave.
  • Access by RIB to pile ladder, as per

Seaflow, but sheltered location and very close to shore.

  • Passed 2000MWh mark (Oct 2010).
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SeaGen Installation

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Tidal Generation Ltd – 2005 to 2010 Founder and technical director

  • Established TGL with two colleagues,

and grew to 18 staff.

  • Put together an industrial consortium

for a DTI-funded R&D programme.

  • Developed concepts for the turbine,

foundation & installation, and O&M strategy.

  • Tested concepts separately at both

tank and full scale, supported by numerical modeling.

  • Sept 2010 - 500kW prototype

successfully generating at EMEC.

Picture: Tidal Generation Ltd.

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First ideas:

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First ideas:

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Bristol University Tank Testing

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More serious testing at IFREMER

Pictures: Tidal Generation Ltd.

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A new idea:

Picture: TGL Alstom

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Full scale testing of deployment concept

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TGL – foundation construction

  • Tripod design developed with SLP.
  • Fabricated and loaded out at SLP’s

Lowestoft yard.

  • Towed to EMEC onboard crane barge.
  • Placed in 45m at LAT on rocky bed.
  • Exposed site, 9kt peak spring currents

measured.

Picture: Rolls Royce Tidal Generation Ltd.

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Picture: Rolls Royce Tidal Generation Ltd.

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Towage up east coast to Orkney

Picture: George Gibberd

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TGL – underwater rock drilling

  • At TGL developed a novel underwater

rapid rock socket drilling technology for tidal sites.

  • Used successfully on site during 2009

to secure tripod.

  • Deployed from moored barge.

Picture: Rolls Royce Tidal Generation Ltd.

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Trial fit onto tripod pile sleeve

Picture: Rolls Royce Tidal Generation Ltd.

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Percussive drill

Picture: Rolls Royce Tidal Generation Ltd.

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Overboarding the drill rig

Picture: Rolls Royce Tidal Generation Ltd.

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Going fishing for a tripod….

Picture: Rolls Royce Tidal Generation Ltd.

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Jacuzzi time (7000cfm air)

Picture: Rolls Royce Tidal Generation Ltd.

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Turbine delivered to quayside

Picture: Rolls Royce Tidal Generation Ltd.

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Delivered to quayside at Kirkwall

Picture: Rolls Royce Tidal Generation Ltd.

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Shoreline testing

Picture: Rolls Royce Tidal Generation Ltd.

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Blades on, beginning to look like a turbine

Picture: Rolls Royce Tidal Generation Ltd.

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You mean it floats, too??

Picture: Rolls Royce Tidal Generation Ltd.

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Sails off into the sunset happily ever after….

Picture: Rolls Royce Tidal Generation Ltd.

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EMEC Tidal Site Activity

Reproduced with kind permission Jenny Norris, EMEC

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MeyGen Inner Sound project

Pictures: MeyGen

  • 4 x 1.5MW machines in Pentland Firth
  • Many years in development
  • Part funded public sources
  • Two turbine suppliers – Andritz

Hammerfest Hydro & Atlantis

  • Gravity base foundation
  • Site licensed for up to 398MW
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MeyGen Inner Sound project

Picture: MeyGen

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And if you think tidal is a challenge:

https://www.youtube.com/watch?v=u-9P2VflRWU

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Mechanical Engineering

Pictures: www.offshorewindbiz.com

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Electrical Engineering

(Apply Kirchoff’s law!)

Picture: www.cleantechnica.com Pictures: www.offshorewindbiz.com

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Civil Engineering

Picture: http://footo.nl/11Wed/oleg-strashnov Picture: www.marinespace.co.uk Picture: www.foundocean.com Picture: www,windcarrier.com

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Mud monkeys (sorry, geoscientists)

Picture: Flickr – Christina Maghill Picture: en.wikipedia.org Picture: www.ixsurvey.com.au

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Understanding ground conditions is vital

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Aeronautical Engineering

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Control Engineering

 Heart of the machine  Complex systems – dynamic & non-linear  Multi-input / multi-output  Floating wind offers new challenges – 6-DOF motion

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You are responsible for public safety

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Finally, yes even computer programmers have a role….

 Find yourself on the Venn diagram  Nerds & Geeks welcome  All major renewables progress will

be computer-dependent:

 Information processing & mgt.  Forecasting wind & solar yield  SCADA & maintenance  Smart metering  Grid management  Device controls

Picture: laughingsquid.com

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Where are renewables going?

 Electricity generation is only part of the low carbon picture:

 Renewable heat  Heat pumps  CHP & district heating schemes

 Renewables are only part of the electricity generation picture:

 Nuclear  Carbon Capture & Storage  Gas station backup capacity

 Energy efficiency – devices, zero carbon buildings  Energy management with increased percentage renewables on

the grid:

 Storage  Interconnection  Large users  Smart metering  Demand side management

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Where are renewables going?

 Societal changes such as Transport Electrification will have big impact:  Personal Energy Trading - Rooftop solar, domestic solar, batteries –

flexible usage

1976

Top speed: 6mph Range: 10 miles Acceleration: 0 to 6 (eventually)

2016

Top speed: 125mph Range: 250 miles Acceleration: 0 to 6o in 3.7s

Picture: en.wikipedia.org Picture: en.wikipedia.org

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Some points to consider

 Take the opportunity of university to acquire breadth and

depth of technical knowledge

 Take every chance you get to work with real plant  Understand how things are made  Maintain strong cross-disciplinary interests  Consider the human angle  Take CPD seriously:

 - read papers and journals  - be aware of new technologies on the horizon  - discuss ideas with tutors and peers  - don’t be afraid of iconoclasm

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Best reference text for renewables:

  • Free download:

https://www.withouthotair.com/

  • Easy to understand orders of

magnitude and rules of thumb

  • Good supporting technical

sections

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Thank you for your attention Questions?