Tooic 3 Flashcards
What is a close system
An area which has no external forces acting on it
Where no energy is lost
Types of waste energy
Light , heat , sound
How to reduce waste energy part 1
Lubricate systems - less heat and friction created
Thermal insulation - less heat lost to surroundings
How to reduce waste energy with buildings
Thicker walls - greater thermal insulation - less heat is lost
How can efficiency be increased
Reducing waste output - from lubrication or thermal insulation
Recycling waste output - using wasted Heat energy as an input like for power
Common energy sources
Fossil fuels.
Nuclear fuel
Bio fuel
Wind
When is renewable energy used
Used for more large scale energy suppliers because of thelarge energy output per kilogram of fuel renewable energy sources can’t provide such a large amount of energy as well as non renewabme
Disadvantages of renewable enegy
Unable to provide such large amounts of energy as easily as they take up lots of space and sometimes aren’t as efficient as non renewable
