08 waves biomass - University of Cagliari · Sugarcane Cassava Sweet sorghum Sweet potato Corn...
Transcript of 08 waves biomass - University of Cagliari · Sugarcane Cassava Sweet sorghum Sweet potato Corn...
Waves
Waves
Waves
Waves
Energia dalle onde - sommario
Media
Risorsa al picco Pl= 12ρgh2v = 40kW /m
Pl= 18ρgh2v =10kW /m
Conversione elettrica Pl×η = 3kW /m
Waves
Waves
Waves
Waves
Waves
Waves
Biomasses and biofuels
Photosynthesis
Photosynthesis
Biomass yields
Biomass burning: efficiency and available power
e.g. 2kg municipal waste/person/day
Biomass burning: efficiency and available power
Output power = yield × energy density × mass density × burning efficiency Overall biomass efficiency = Power/Insolation Area = Needed power / Output power
Ex: - wood in Sardinia: yield 10 m3(7 ton)/ha/year, energy density 5 kWh/kg (dry) - sorgo: yield 50ton/ha/year, energy density 5 kWh/kg (dry)
Biomasse - sommario
Produzione yield = 10 ⋅103Kg
ha × y
Risorsa yield × energydensity =50 ⋅103KWh
104m2 × 24 ⋅365h≈ 0.6 W
m25KWhKg
Sugarcane
Ethanol
Ethanol
Biodiesel