PPT: Heat Transfer in Boiling & Condensation | Heat Transfer - Mechanical Engineering PDF Download

 Page 1


OVERVIEW
?INTRODUCTION
?BOILING AND THEIR TYPES
?BOILING CURVES
?CONDENSATION AND THEIR TYPES
?CONDENSATION CURVES
?APPLICATIONS
?CONCLUSION
2
Page 2


OVERVIEW
?INTRODUCTION
?BOILING AND THEIR TYPES
?BOILING CURVES
?CONDENSATION AND THEIR TYPES
?CONDENSATION CURVES
?APPLICATIONS
?CONCLUSION
2
INTRODUCTION
BOILING:-
?Liquid-to-vapor phase change
?Like evaporation
CONDENSATION:-
? Gas phase into liquid phase
? water vapour to liquid water when in contact with a liquid or solid 
surface
? Reverse of evaporation
3
Page 3


OVERVIEW
?INTRODUCTION
?BOILING AND THEIR TYPES
?BOILING CURVES
?CONDENSATION AND THEIR TYPES
?CONDENSATION CURVES
?APPLICATIONS
?CONCLUSION
2
INTRODUCTION
BOILING:-
?Liquid-to-vapor phase change
?Like evaporation
CONDENSATION:-
? Gas phase into liquid phase
? water vapour to liquid water when in contact with a liquid or solid 
surface
? Reverse of evaporation
3 4
Page 4


OVERVIEW
?INTRODUCTION
?BOILING AND THEIR TYPES
?BOILING CURVES
?CONDENSATION AND THEIR TYPES
?CONDENSATION CURVES
?APPLICATIONS
?CONCLUSION
2
INTRODUCTION
BOILING:-
?Liquid-to-vapor phase change
?Like evaporation
CONDENSATION:-
? Gas phase into liquid phase
? water vapour to liquid water when in contact with a liquid or solid 
surface
? Reverse of evaporation
3 4
BOILING
?The Temprature at which the vapor pressure of the liquid is equal to the 
pressure exerted on the liquid by the surrounding atmosphere.
?The boiling point of water is 100 °C or 212 °F, but is lower with the decreased 
atmospheric pressure found at higher altitudes.
Types:-
?Nucleate                                                    
?Critical heat flux                                       
?Transition
?film
5
Page 5


OVERVIEW
?INTRODUCTION
?BOILING AND THEIR TYPES
?BOILING CURVES
?CONDENSATION AND THEIR TYPES
?CONDENSATION CURVES
?APPLICATIONS
?CONCLUSION
2
INTRODUCTION
BOILING:-
?Liquid-to-vapor phase change
?Like evaporation
CONDENSATION:-
? Gas phase into liquid phase
? water vapour to liquid water when in contact with a liquid or solid 
surface
? Reverse of evaporation
3 4
BOILING
?The Temprature at which the vapor pressure of the liquid is equal to the 
pressure exerted on the liquid by the surrounding atmosphere.
?The boiling point of water is 100 °C or 212 °F, but is lower with the decreased 
atmospheric pressure found at higher altitudes.
Types:-
?Nucleate                                                    
?Critical heat flux                                       
?Transition
?film
5
BOILING CURVE
6