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Posted inSolid Mechanics
Normal Stress,σ
a) gives the intensity of stress uniformly distributed over the cross section in an axially loaded, prismatic bar of…
Posted inHeat & Mass Transfer
HEAT PIPES
1) A heat pipe is a simple device with no moving parts that can transfer large…
Posted inHeat & Mass Transfer
THE PRESENCE OF NON-CONDENSABLE GASES IN CONDENSERS
1) Most condensers used in steam power plants operate at pressures well below the atmospheric pressure…
Posted inHeat & Mass Transfer
DROPWISE CONDENSATION
1) Dropwise condensation, characterized by countless droplets of varying diameters on the condensing surface instead of a continuous…
Posted inHeat & Mass Transfer
FILM CONDENSATION
1) increases in the flow direction x because of continued condensation at the liquid–vapor interface. a) Heat in the…
Posted inHeat & Mass Transfer
CONDENSATION HEAT TRANSFER
1) Condensation occurs when the temperature of a vapor is reduced below its saturation temperature a) It…
Posted inHeat & Mass Transfer
FLOW BOILING
1) In flow boiling, the fluid is forced to move by an external source such as…
Posted inHeat & Mass Transfer
POOL BOILING
1) Steps involved a) Early stages of boiling, some bubbles stick to the surface of the pan…
Posted inHeat & Mass Transfer
BOILING HEAT TRANSFER
1) Boiling is a liquid-to-vapor phase change process just like evaporation, but there are significant differences…
Posted inHeat & Mass Transfer
THE EFFECTIVENESS–NTU METHOD
1) This method is based on a dimensionless parameter called the heat transfer effectiveness 2) To determine…