Bauhaus Luftfahrt Jahrbuch 2017

BauhausLuftfahrt

35

Wasserbedarf verschiedener

Kraftstoffe

Wasserverbrauch verschiedener Kraftstoffpfade

(nichtbiogen: grau, biogen: gelb, fossil: dunkelblau).

Die Werte der Vergleichspfade wurden der wissenschaftlichen

Literatur entnommen.

Solar thermochemical

Biodiesel from microalgae

Biodiesel from biomass

Ethanol from biomass

Gas-to-Liquid (jet fuel)

Water requirements of different

fuels

Water footprint of different fuel production pathways

(nonbiogenic: grey, biogenic: yellow, fossil: dark blue).

The values of the other fuel pathways were taken

from the scientific literature.

Coal-to-Liquid (jet fuel)

Enhanced oil recovery

Canadian oil sands (gasoline)

Conventional gasoline

1

10

100 1000 10,000 100,000

Water footprint of fuel production [litres per litre of jet fuel]

Electricity

34.5 %

Mirror cleaning

44.1 %

Concentrated

solar power

6.5 %

Other

0.2 %

Concentration infrastructure

14.7 %

On-site total:

7.4 litres per litre of jet fuel Off-site total:

42.4 litres per litre of jet fuel

Thermochemistry

21.4 %

Ceria

78.6 %

Direkter und indirekter Wasserbedarf

solarthermochemischer Kraftstoffe

Direkter (links) und indirekter (rechts) Wasserverbrauch solarthermochemischer

Kraftstoffe. Der direkte Verbrauch ist durch das Reinigen der Spiegel geprägt,

der indirekte Verbrauch durch den Abbau von Ceroxid.

Direct and indirect water requirements

of solar thermochemical fuels

Direct (left) and indirect (right) water footprint of solar thermochemical

fuels. The direct footprint is dominated by the cleaning of the mirrors

and the indirect one by the mining of cerium oxide.

Flächenertrag verschiedener

Kraftstoffe

Flächenertrag verschiedener Kraftstoffpfade

(nichtbiogen: grau, biogen: gelb, fossil: dunkelblau).

Die höchsten Werte werden von Power-to-Liquid-Prozessen (PtL)

und dem solarthermochemischen Pfad erreicht.

Area-specific productivity

of different fuels

Area-specific productivity of different fuel pathways

(nonbiogenic: grey, biogenic: yellow, fossil: dark blue).

The highest values are reached by Power-to-Liquid (PtL)

processes and the solar thermochemical pathway.

PtL – wind power

PtL – parabolic trough

PtL – solar tower

PtL – PV (Germany/ US)

Solar thermochemical

PtL – coal

HEFA – oil palm

BtL – wood from plantation

Ethanol – sugar cane

HEFA – jatropha

Ethanol – corn

HEFA – soybean

0 40,000 80,000 120,000 160,000

Area-specific productivity [L jet fuel eq. ha -1 yr -1 ]

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