Optimising Woodfuel Project Returns through Heat and Power Generation
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Optimising Woodfuel Project Returns through Heat and Power Generation

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Presentation given at the CLA's Woodfuel Conference at Doddington Hall on Wednesday 30 October by Dr Andrew Horsley, Business Development Director, Arbor Heat and Power.

Presentation given at the CLA's Woodfuel Conference at Doddington Hall on Wednesday 30 October by Dr Andrew Horsley, Business Development Director, Arbor Heat and Power.

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Optimising Woodfuel Project Returns through Heat and Power Generation Optimising Woodfuel Project Returns through Heat and Power Generation Presentation Transcript

  • Optimising Woodfuel Project Returns Through Heat and Power Generation CLA Woodfuel Conference Dr Andrew Horsley, 30th October2013, Doddington Hall
  • About Arbor Heat and Power • Innovative but pragmatic renewable energy solutions tailored for built environment • Upfront consultancy services through to implementation and maintenance • Investment in research and development to identify technologies for future applications
  • Introduction • Woodfuel energy projects traditionally focussed around heat only • Heat and Power (CHP) can be cost effectively generated from woodfuel using gasification technology • Project planning and design requires different considerations • Financial returns and carbon savings can be greatly enhanced over “heat only” projects
  • Biomass CHP - Concept Natural Gas/Oil/Biomass Backup Boilers Renewable Heat Supply Thermal Store Heat Supply for space heating and hot water Renewable Fuel Supply Waste Heat to Dry Woodchip House, Wood Fuel Drying or Leisure CHP System Biomass Gasification Syngas Renewable Electricity Supply National Grid Import/Export Electricity to balance demand/supply
  • What is Advanced Gasification?
  • Modelling Heat and Power Use
  • Modelling Heat and Power Use Plant Operation over Selected 7 Days 1500.00 Demand kWth 1000.00 500.00 Boilers kWth 0.00 1 25 49 73 97 121 145 -500.00 -1000.00 Thermal Store kWth CHP kWth -1500.00 Plant Operation over Selected 7 Days 400.00 300.00 Demand kWth 200.00 100.00 Boilers kWth 0.00 -100.00 1 -200.00 25 49 73 97 121 145 Thermal Store kWth -300.00 -400.00 -500.00 -600.00 CHP kWth
  • Biomass CHP Package 30kWe • Scalable Solution down to 30kWe • Other sizes 200kWe, 400kWe and 800kWe • Many potential applications
  • Biomass CHP Package 30kWe
  • Woodfuel Requirements • • • • • Coarse screw cut or screened wood chips Even quality with few fines Readily stored and dried Moisture content around 15-18% Wood drying opportunities are attractive projects in their own right
  • Woodfuel Requirements
  • Wood Drying Concepts
  • Financial Returns • Offsetting traditional fuels: electricity and oil/gas • Renewables Obligation Certificates – 2 per MWh electricity • Renewable Heat Incentive 7.3p/kWh flat rate • Exporting surplus electricity back to the grid
  • Typical Project Economics Arbor ElectroGen (30kWe) Thermal Output 565,530 kWh Electrical Output 230,252 kWh Heat Offset Value £47,238 Electricity Offset Value £29,933 RHI Value £40,153 ROC Value £19,341 Annual Costs (fuel/maint.) £46,000 Annual Net Benefit £90,655 Capital Cost £407,947 Payback Period 4.5 years Carbon Saving 295 tonnes
  • Summary • Woodfuel can be converted to heat and power at small scale with highly attractive economics • Project considerations are slightly different than for wood heat projects – smaller capacities with longer operating hours • Careful integration and design is paramount • Wood fuel drying opportunities can offer heat loads to optimise operation of plant throughout year • A viable alternative to biomass boilers in the right circumstances • Carbon saving potential makes integration in rural new build developments with strong planning objectives ideal
  • The Future – Next Generation Systems • Small scale waste to energy CHP plants – Removing waste disposal costs – Providing clean low carbon energy • First pilot plants in planning stages
  • Contact Andrew Horsley  andrew.horsley@arborhp.com  07970 785429  www.arborhp.com