Micro-generation of electricity Flashcards
0
Q
Give two examples of micro-generation
A
Roof-top photovoltaic cells(PV)
Domestic wind turbines
1
Q
State the definition of micro-generation
A
The generation of electricity locally on a small scale- close to where it is needed
2
Q
State 3 advantages of micro-generation
A
- Does not produce CO2 so does not contribute to the green house effect and global warming
- Does not produce SO2 so does not contribute to acid rain
- Zero fuel costs
- Higher efficiency of generation
3
Q
State two advantages of roof-top photovoltaic cells
A
- Provide ‘free’ electricity during daylight hours
- The average system can generate 3kW of electricity(peak)
4
Q
State 2 advantages of domestic wind turbines
A
- Provide ‘free’ electricity when the wind is blowing
- Average system can generate 6kW of electricity(peak)
5
Q
State the disadvantages of micro-generation
A
- Erratic energy supply
- Cannot generate large quantities of electricity in one place
- Many locations are limited in which types of micro-generation can be used
- Some people object to the visual impact of wind turbines and solar panels
6
Q
State 2 disadvantaged of roof-top photovoltaic cells
A
- Visual impact on roof-tops
- Need to cover a large area to generate large amounts of electricity
7
Q
State 3 disadvantages of domestic wind turbines
A
- Visual impact
- Noise impact
- Unsuitable for most locations- need an un-interrupted windy site
