Please enable JavaScript.
Coggle requires JavaScript to display documents.
Energy Transfer 5 - Coggle Diagram
Energy Transfer 5
Phase Diagram
Phase Diagram of Water
Terms
Saturation Temperture
Temp which vaporization takes place at given pressure
Saturation Pressure
Pressure vaporization takes place
Saturated liquid
Liquid about to vaporize
All water in liquid state
Saturated Vapor
Vapor that is about to condense
When vapor will condense with any decrease in temp
All water in gas state
Superheated Vapor
Steam that is heated above 100C
Subcooled Liquid
A saturated vapor condensing back to a liquid
Quality of Vapor
Ratio of mass of water vapor to total mass of substance
Triple Point
A state which 3 phases may exists in equilibrium
Critical Point
End Point of Phase Equilibrium Curve
E.g.
Condition where liquid and vapor @ same time
Steam Quality
Process
A
Water in Boiler
B
Water becomes Saturated Liquid
C
Saturated steam
D
Saturated steam become Superheated vaport
X in between B & C
X closer to B
Low steam quality
X closer to C
High stem quality
Enthalpy of steam
H=(1-Xs)Hc+XsHv
H=Entalpy of steam
Hc is enthalpy of liquid
Hv is enthalpy of vapor
Xs is steam quality
Thermodynamic Properties of Water
Importance
Steam and water often heat transfer media
Major component many food products
Forms of Water :potable_water:
Saturated Liquid
Saturated Vapor
Vapor-Liquid Mixture
Superheated Steam
Pressure/ Enthalpy diagram of water
How to use
Process
A
Water @ 90C
B
Water at 100C but Saturated Liquid
C
All Water is Vapor but Saturated steam/vapor
D
Superheated Steam at 200C