Heat Transfer and Efficiency Flashcards
1
Q
List the main types of energy.
A
Magnetic Kinetic Heat Light Gravitational potential Chemical Sound Electrical Elastic potential Nuclear
2
Q
What do energy transfer diagrams show?
A
Each type of energy
Whether they are stored or not
The processes taking place as energy is transferred
3
Q
What do Sankey Diagrams summarise?
A
All the energy transfers taking place in the process
4
Q
What happens to wasted heat energy?
A
It is transferred to surroundings, making them warmer
5
Q
What is the efficiency of a device?
A
The proportion of the energy supplied that is transferred in useful ways
6
Q
How do we calculate efficiency?
A
Decimal: Useful energy out/total energy in
Percentage: Useful energy out/total energy in x 100
