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Lernmaterialien für renewable Energies an der TU München

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TESTE DEIN WISSEN
Primary energy consumption in 2019
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TESTE DEIN WISSEN
~150.000 TWh (~18 TW) ≅ 14.000 Mt oil equivalent ≅ 500.000 liters of oil per second
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TESTE DEIN WISSEN
Energy Consumption of the Human Being
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TESTE DEIN WISSEN
For one person:

10 % Heat

30% Physical Activity

60 % Basic Metabolic Function

• Food Only: ~ 2 kWh/day or 0.08 kW average power

• Stone Age:

• Hunter/Gatherers: ~0.24 kW

• Farmers: ~0.6 kW

• Current Age:

• Germany: ~6.5 kW

• Japan: ~3.5 kW

• USA: >10 kW

• World average consumption per person: ~2.3 kW

Total world energy consumption in 2050:

1x10 10 humans x 2.3 kW/human = 2.3x10 10 kW = 23 TW
Lösung ausblenden
TESTE DEIN WISSEN
In Germany, almost 30 Mio. tons CO2-equivalent of greenhouse gas emissions were avoided die to PV electricity.
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TESTE DEIN WISSEN
Yes
Lösung ausblenden
TESTE DEIN WISSEN
In the lecture, the orbit of the earth is assumed to be circular. Calculate the variation of the solar constant in W/m² during the course of the year with the maximum and the minimum distance Earth-Sun being reciprocally Rmin = 1,47E8 km and Rmax = 1,52E8 km.
Lösung anzeigen
TESTE DEIN WISSEN
92
Lösung ausblenden
TESTE DEIN WISSEN
Global Fossil Fuel Reserves
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TESTE DEIN WISSEN
• Oil: 50 years

• Natural Gas: 51 years

• Coal: 132 years

• (Lithium: 225 years)
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TESTE DEIN WISSEN
As a green energy source, biomass witnessed a consistent increase of usage in transportation sectors recently.
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TESTE DEIN WISSEN
No
Lösung ausblenden
TESTE DEIN WISSEN
The surface tension gives rise to an additional force facilitating the formation of waves?
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TESTE DEIN WISSEN
No
Lösung ausblenden
TESTE DEIN WISSEN
Assume a g* =0,16 for the ocean and the average wind speed at 10 m above the sea level is around 10 m/s estimate the wind speed in m/s at a height of 100 m. (with an accuracy of one decimal place)
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TESTE DEIN WISSEN
14
Lösung ausblenden
TESTE DEIN WISSEN
Which type of chlorophyll dimer is involved in Photosystem I

The number in the name indicates
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TESTE DEIN WISSEN
P700

The wavelength of absorption maximum
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TESTE DEIN WISSEN
What is the atmospheric CO2 concentration in 2019 in ppm? (with three significant digits)
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TESTE DEIN WISSEN
412
Lösung ausblenden
TESTE DEIN WISSEN
Use an ideal atomic gas with 7.2E23 molecules for an adiabatic CAES. Suppose the starting temperature is 300 K, how much energy is stored if the gas is compressed from 1 atm to 2 atm?  Give the answer in J with one decimal point accuracy.
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TESTE DEIN WISSEN
1442,7
Lösung ausblenden
TESTE DEIN WISSEN
Assume k=2, λ= 100m/s,  which wind speed in m/s has the largest probability density?
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TESTE DEIN WISSEN
70,71
Lösung ausblenden
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Q:
Primary energy consumption in 2019
A:
~150.000 TWh (~18 TW) ≅ 14.000 Mt oil equivalent ≅ 500.000 liters of oil per second
Q:
Energy Consumption of the Human Being
A:
For one person:

10 % Heat

30% Physical Activity

60 % Basic Metabolic Function

• Food Only: ~ 2 kWh/day or 0.08 kW average power

• Stone Age:

• Hunter/Gatherers: ~0.24 kW

• Farmers: ~0.6 kW

• Current Age:

• Germany: ~6.5 kW

• Japan: ~3.5 kW

• USA: >10 kW

• World average consumption per person: ~2.3 kW

Total world energy consumption in 2050:

1x10 10 humans x 2.3 kW/human = 2.3x10 10 kW = 23 TW
Q:
In Germany, almost 30 Mio. tons CO2-equivalent of greenhouse gas emissions were avoided die to PV electricity.
A:
Yes
Q:
In the lecture, the orbit of the earth is assumed to be circular. Calculate the variation of the solar constant in W/m² during the course of the year with the maximum and the minimum distance Earth-Sun being reciprocally Rmin = 1,47E8 km and Rmax = 1,52E8 km.
A:
92
Q:
Global Fossil Fuel Reserves
A:
• Oil: 50 years

• Natural Gas: 51 years

• Coal: 132 years

• (Lithium: 225 years)
Mehr Karteikarten anzeigen
Q:
As a green energy source, biomass witnessed a consistent increase of usage in transportation sectors recently.
A:
No
Q:
The surface tension gives rise to an additional force facilitating the formation of waves?
A:
No
Q:
Assume a g* =0,16 for the ocean and the average wind speed at 10 m above the sea level is around 10 m/s estimate the wind speed in m/s at a height of 100 m. (with an accuracy of one decimal place)
A:
14
Q:
Which type of chlorophyll dimer is involved in Photosystem I

The number in the name indicates
A:
P700

The wavelength of absorption maximum
Q:
What is the atmospheric CO2 concentration in 2019 in ppm? (with three significant digits)
A:
412
Q:
Use an ideal atomic gas with 7.2E23 molecules for an adiabatic CAES. Suppose the starting temperature is 300 K, how much energy is stored if the gas is compressed from 1 atm to 2 atm?  Give the answer in J with one decimal point accuracy.
A:
1442,7
Q:
Assume k=2, λ= 100m/s,  which wind speed in m/s has the largest probability density?
A:
70,71
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