Week 1

Question 0

Estimatet amount of energy needed in the World in future scenarios 24 hours a day, all days

Answer 0

2007 : 15 TW
2050 : 30 TW
2100 : 50 TW

Question 1

Name the different types of renewable energy and the amount of energy that they each Havest all year long

Answer 1

Biomass 5-7 TW
Hydroelectric 1.2TW
Geothermal 1.9 TW
Tide/ Osean Currents 0.7 TW 
Wind 14 TW 
Sun 10.000 TW

Question 2

What is required of a sustainable solarcell ?

Answer 2

Cover a large surface
The material
Manufacturing
Low energy payback time 
Low Carbon footprint
Efficiency
Low cost
Speed

Question 3

Who made the first discoveries towards extracting energy from the Sun ?

Answer 3

A. E. Becquerel. 1839

Question 4

When and where was the first solar cell made?

And what was its efficiency?

Answer 4

Bell labs in 1950s

6 % efficiency

Question 5

What kickstartet the solar Industry ?

Answer 5

The energy crisis in the 1970

Question 6

What was the first solar cell used fore?

And why not everywhere?

Answer 6

It was used to power satellites.

It was to expensive to use other places

Question 7

What was the factors of the 1.genneration of solar cells

Answer 7

Made of Crystalline silicon
Expensive
High material usage
Very stabel

Question 8

What was the factors of the 2.generation of solar cells?

Answer 8

Thin film solar cells
Amorphous silicon
Lower teperature
Inherent problems
Poor stabillity

Used in calculators

Question 9

The factors of the 3. generation

Answer 9

Lower cost
Thinner films 
Lower temperatures
Many different variation
>10% efficiency 
Low material usage
Fast manifacture
Scalable 
No toxic materials 
Low invironmental impact
Very unstable

Question 10

What can life cycle analysis be used for ?

Answer 10

You can measure the impact of

• Processing
• Operation
• Decommissioning
• End of life management

Question 11

What is life cycle assessment ?

Answer 11

• A tool to guide research

- Eco-design

Question 12

What is the requirements og life cycle assessment ?

Answer 12

• sound data

- thorough analysis

Question 13

The LCA proces ?

Answer 13

• Goal and scope definition
• Inventory analysis
• impact assessment
• interpretation for all of them.

Question 14

Goal and scope definition of LCA

Answer 14

• opv to electricity
• identify hotspots
• Guide research
• Support policy decision
  
  • Rigorous study
  • Extensive documentation
  • Peer review

Functional Unit: kWh
Reference flow : m2

Question 15

Inventory analysis of LCA

Answer 15

• Collect inputs
• Materials
• Processes
• Transport
• Electricity
• Releases

Question 16

Impact assessment of LCA

Answer 16

• Inputs / outputs
• LCIA
  
  • Climate change
  • Eutrophication
  • Ozone depletion
  • Human toxicity
  • Etc

Impact potential

• CO2:1
• CO : 3
• Methane : 25

Question 17

Interpretation in the LCA

Answer 17

• indentify key parameters
  
  • Energy balance
  • Material fluxes
  • Emissions
  • waste
• Complete information
  
  • check consistency
  • make sensibility studies