sustentabilidade aula mcbrito 2017 - fenix.ciencias.ulisboa.pt · carla silva [email protected]...
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![Page 1: Sustentabilidade Aula MCBrito 2017 - fenix.ciencias.ulisboa.pt · Carla Silva camsilva@fc.ul.pt Sustentabilidade, FCUL, 17 Maio de 2017 19 CO2emissions g/pkmWtW 0 20 40 60 80 100](https://reader034.vdocuments.net/reader034/viewer/2022050216/5f623e64bee74760b63916c6/html5/thumbnails/1.jpg)
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 3
Carla Silva
Who am I
Integrated master Energy and Environment Engineering
Bioenergy, alternative road vehicles,
System energy and emissions analysis
Engenharia Geográfica,
Geofísica e Energia
Sustainable mobility
Combustion
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 4
Msc Energy and Environment Engineering
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 5
Msc Energy and Environment Engineering
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 6
Msc Energy and Environment Engineering
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 7
Sustainability
• Reduce carbon dioxide
• Less energy consumption
• Renwable energy
Less CO2
More efficiency
Zero fossil
• Resource depletion
• Affordability
• Easy access
• …
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 8
Travelling throughout the years….
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 9
Measuring energy efficincy MJ/pkm
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 10
Soft/active modes and Public transport
Hong Kong
6 500 MJ/hab.ano
Paris
15 500 MJ/hab.ano
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 11
Transport sector 2013
World…… Portugal…..
(<0.01%)
Road transport accounts for 50-60%
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 12
Liquid fuels in transportation sector
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 13
Liquid fuels in transportation sector
Ethanol ∼ 95 000 Million Liters
Biodiesel ∼ 30 000 Million Liters (2014)
Corn
Soy
Sugar cane
Palm
Rapeseed
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 14
Liquid fuels in transportation sector
Ethanol ∼ 25 MJ/kg
Biodiesel ∼ 37 MJ/kg
Liquid fossil fuel Gasoline/diesel ∼ 40 MJ/kg 125 kg CO2/MJ
Solid biomass energy from combustion 14 - 21 MJ/kg
C2H6O
C18H32O2
Biogenic CO2
105 kg/MJ
50 kg/MJ
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 15
Queima de Carbono fóssil (formado em milhões de anos)
MOBILE COMBUSTION
Emissões de CO2
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 16
Life cycle thinking
Fuel origin
FOSSIL or RENEWABLE????
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 17
CO2 emissions g/pkm
0 5 10 15 20 25 30
Average diet including imported food
UK grown low-processed food
Local organically produced food only
Average diet including imported food
UK grown low-processed food
Local organically produced food only
WA
LKW
ALK
WA
LKC
YCLE
CYC
LEC
YCLE
g/pkm
agricultural activities
Walking and cycling
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 18
CO2 emissions
Pure eletric doesn’t burn!!!!
Zero tailpipe CO2
55%
20%
23%
2%
Portugal 2015
TÉRMICA
HIDRÁULICA
EÓLICA
FOTOVOLTAICA
Thermal power plants burn fuel
CO2 ∼300-400 g/kWh
CO2 ∼60 g/pkm
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 19
CO2 emissions g/pkm WtW
0 20 40 60 80 100 120 140
Average SUV / 4x4 electric (green)
Average city-car electric (standard)
Average city-car natural gas
Average city-car petrol hybrid
Average city-car LP gas
Average city-car diesel
Average city-car petrol
g/pkm
Tailpipe
Life cycle
WtW –Well-to-Wheels
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 20
Energy and emission analysis
Biogenic CO2
Direct 0.75 kg/Lethanol
C6H12O6 + yeast → 2C2H5OH + 2CO2 + heat
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 21
Energy and emission analysis
ethanol biodiesel
Yield < 1% in Wt EROI <1
Microalgae to biohydrogen
EROI=energy delivered by a particular fuel to society
energy invested in the capture and delivery
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 22
Biorefinery concept
22
Sustainable mobility
Biofuel
Bioplastic
Et al…..
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 23
Energy and emission analysis
RED-Renewable Energy Directive
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 24
Electrification an biofuels
Diesel/biodiesel plug-in hybrid
Flex-fuel plug-in hybrid
Autonomous….Need less “bioenergy”…..no driver ☺
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 25
Other aspects….sustainability
Lithium based bateriesResource depletion
@https://www.statista.com/statistics/268790/countries-with-the-largest-lithium-reserves-worldwide/
1200000000 cars x 5 kgLi = 60 000 000 ton
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 26
Other aspects….sustainability
BiofuelResource depletion
bio-oil could be used as vehicle oil raw material for the pharmaceutical and cosmetics industries
Waste materials use, e.g. waste cooking oil, pulp industry waste, wastewater use to grow microalgae……even bioplastic
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 27
Other aspects….sustainability
“Rebound effect”
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 28
The fact that is A assures sustainability?
27 g/km
VS
Exercise
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 29
Behaviour….Rebound effects
104 g/km (só gasolina)5 l/100 km; 1.3 €/l €/km?????
Fazia 5 km/dia semana + 30 km fim semana
CO2 semana= ?
27 g/km (parte da gasolina 1 L/100km), resto eletricidade (6 kWh/100 km) + barato por km€/km???
Passa a fazer 5 km/dia semana + 120 km fim semana
CO2 semana= ???
Exercise
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 30
Behaviour….Rebound effects
104 g/km (só gasolina)5 l/100 km; 1.3 €/l ⇒ 0.065 €/km
Fazia 5 km/dia semana + 30 km fim semana
CO2 semana= 104*(5*5+50) = 7.800 kg
27 g/km (parte da gasolina 1 L/100km), resto eletricidade (6 kWh/100 km * 125 CO2 g/km ∼ 8 g/km) + barato por km(0.0013 €/km gasolina + 0.0006 €/km eletricidade = 0.0019 €/km)
Passa a fazer 5 km/dia semana + 120 km fim semana
CO2 semana= 35g/km*(5*5+4*50) = 7.865 kg
Exercise
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Carla Silva [email protected] Sustentabilidade, FCUL, 17 Maio de 2017 31
Outros aspetos….sustentabilidade
Custo total de aquisição EUR/km
(aquisição + carregamento + seguro+ impostos de circulação+ manutenção - valor residual)
Affordability
**
Eletrico puro 0.42* 0.53**
Hibrido não plug-in 0.468* 0.4
Convencional 0.443-0.470* 0.43
Petrol Diesel Electricity
*€1.504/l €1.491/l €0.085/kWh
**€ 1.59/L € 1.43 /L € 0.29 /kWh @ http://www.sciencedirect.com/science/article/pii/S0301421515000671
@ http://www.sciencedirect.com/science/article/pii/S2210539516000043
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