District Heating• Typical range of power 500 kWth –
20 MWth
Optimum size about 1 MWth
• Consumption about 1.000 tons/year compatible with local availability
• Reduced impact• Repeatability• Contained costs
District heating pipe
Boiler
Chips cost 40 – 60 Euro/tonsHeat cost 6 - 8 cEuro/kWh
CHPCombined production of Electric and Thermal power from biomass
Technologies– Steam (classical Rankine Cycle)
Power range 5 MWe 20 MWeAnnual use of wood higher than 50.000 tons/yearEfficiency about 15-25%
– Organic Rankine CyclePower range 450 kWe 1.5 MWeAnnual use of wood from 5.000 to 15.000 tons/yearEfficiency about 15%
Green CertificateTo improve the production of electricity from renewable energy source GREEN CERTIFICATES (about 10 c€ per kWh)
ORC Turbogenerator
Pellets boiler – Typical installations
• 8-10 kWth– Domestic heating– Production of hot air– Consumption: 0,6 – 2,1 Kg/h– Cost: 2.000 – 4.000 Euro
• 25 kWth– Small houses– Production of hot water and hot air– Consumption about 5 kg/h– Cost 5.000 – 10.000 Euro
• 110 kWth– Buildings– Production of hot water– Consumption about 20 kg/h– 35.000 – 50.000 Euro– It needs place to store Pellets boiler
E. Logistic systems
• Chainsaw• Transportation system with mobile
engine• Timberjack (less used)• Tractors (in most of cases)
SUPPLY CHAIN
Cut off using chainsaw
Measurement and section
Transportation with tractor
Supply chain - 1
Supply chain - 2Transportation system with
mobile engine
Transportation with track trailer
Truck loading
Heavy mobilechips machine
Next deliverables (short term)
• List of regional stakeholder• Analysis of wood resources and energy• Demand Catalogue of technologies and
logistic systems
Proposals for next deliverables
• Common template for deliverables• Set deadlines for deliverables• Next study tour: where ? when ? focus on: technologies ? Logistic
systems ?