Lectures 1-3 Flashcards
1
Q
HIerarchy of energy
A
- Mechanical
- Electrical
- Chemical
- Nuclear
- Thermal
2
Q
thermal efficiency
A
output/ input
3
Q
coefficient of efficiency
A
same as thermal efficiency
4
Q
Adiabatic
A
no energy transfer through heat
5
Q
isentropic
A
no change in entropy (reversible)
6
Q
isothermal
A
no change in temperature
7
Q
isobaric
A
no change in pressure
8
Q
isometric/ isochoric
A
no change in volume
9
Q
polytopic
A
PV^n is constant
10
Q
state postulate
A
The minimum number of independent intensive properties to find the state for a simple compressible system is two.
11
Q
1st law of theromodynamics
A
- conservation of energy
- energy cannot be created nor destroyed
- output - input = storage
12
Q
Principle of entropy
A
total entropy is always increasing
13
Q
intensive
A
doesn’t depend on the amount of material
14
Q
extensive
A
depends on the amount of material
