Thermodynamics
CHANGE OF PHASE
Change of Phase Summary
•
Classification of Properties
Intensive properties are independent of mass (temperature,
pressure, or any specific property)
Extensive properties are a function of the mass of the system
(mass, volume)
•
The following terms were defined in this chapter:
Saturation
-
combination of temperature and pressure
at which a mixture of vapor and liquid
can exist at equilibrium
Subcooled liquid -
a liquid at a temperature below saturation
temperature for its pressure
Superheated vapor -
a vapor at a temperature above saturation
temperature for its pressure
Critical point
-
the temperature and pressure above which
there is no distinction between the liquid
and vapor phases
Triple point
-
the temperature and pressure at which all
three phases can exist in equilibrium
Vapor pressure curve -
a graphical representation of the
relationship between temperature and
pressure at saturated conditions
Quality
-
the fraction of the total mass of
a mixture that is in the vapor
phase
Moisture Content -
the fraction of the total mass of
a mixture that is in the liquid
phase
Rev. 0
Page 39
HT-01
