Ch 2 Flashcards
1
Q
Energy in transit
A
Heat
2
Q
Heat transfer occurs on a molecular level as a result of…
A
Temperature differences
3
Q
Unit for heat?
A
BTU British thermal unit
4
Q
Metric system unit for heat
A
Calorie
5
Q
Amount of heat added or removed to produce a phase change.
Invisible to thermometer
A
Latent Heat
6
Q
Amount of heat added or removed that causes a temperature change
Visible on thermometer
A
Sensible Heat
7
Q
Identifies amount of energy present in the fluid of a system but cannot be measured directly.
Internal energy plus flow energy
A
Enthalpy
8
Q
Identifies amount of energy that is unable to do work in a given system.
A
Entropy
9
Q
h=u + Pv
Specific enthalpy = internal energy + pressure x specific volume
A
Specific Enthalpy
