Flashcards in Energy Transfer Deck (9):
What is the principle of conservation of energy ?
Energy cannot be created or destroyed only transferred from one form to another
What are the nine different energy forms ?
• sound energy
• light energy
• elastic potential
• electrical energy
• kinetic energy
• Chemical potential
• nuclear potential
• Thermal energy
• gravitational potential
Equation for efficiency
Useful energy output
Efficiency = -------------------
Total energy input
X 100 to get %
What diagrams can represent input, output and waste energy ?
What is proportional in a Sankey diagram ?
The arrow size is proportional to the amount of energy that it indicates
What is conduction ?
When vibrating atoms pass on the kinetic energy to the atoms nearest them
What is convection ?
When hotter less dense fluid rises and cold more dense fluid sinks, this creates convection currents
What is radiation ?
Energy is transferred by electromagnetic waves