Unit 3: Secondary Fuels - Electricity
- Created by: rosieevie
- Created on: 09-01-15 17:09
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- Secondary Fuels - Electricity
- Advantages
- Easy to transport
- No pollution at the point of use
- Easy to convert electricity to other energy forms e.g. sound, heat
- Disadvantages
- Cannot be stored
- Energy efficiency from primary to secondary fuels is low
- Pollution occurs at generation
- Methods of Generation
- Kinetic Energy
- Fuel heated, converting water into steam
- Steam turns turbine that spins an electrical conductor in a magnetic field
- Light Energy
- Photons strike photovoltaic cell and displace electrons (creating negatively charged surface)
- Free electrons flow along conductor to power electrical appliances
- Potential Energy
- Water converted into kinetic energy as it falls
- Used to turn a turbine
- Chemical Energy
- Redox reactions used
- Electrons flowing can be used to power electrial equipment
- Kinetic Energy
- Advantages
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