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Heat and Mass Transfer

Difference b/w Thermodynamics and Heat mass Transfer

Modes of Heat Transfer

Conduction

Notable exception to statement

Thermal Conductivity (K)

Insulator

Conduction in gases

Convection

Radiation

Law of Heat transfer

Fourier Law of conduction

Newtons Law of Cooling

Steafon Baltzman Law of Radiation

Black Body

Integral of Fourier Laws

Electrical Analysis of Heat Transfer

Thermal Resistance for slab

Conduction heat Transfer through a composite slab

Thermal Circuit

Convection Thermal Resistance

Conduction, convection through a composite slab

Radial conduction Heat Transfer through a hollow cylinder

Radial conduction Heat Transfer through a composite cylinder

Radial Conduction, Convection H.T through composite cylinder

Critical radius of insulation

Physical significance of critical radius of insulation

Practical Application

Electric power transmission cables

Electronic or semi-conductor devices

Radial conduction H.T through a hollow sphere

Thermal circuit for composite sphere containers

Generalized Conduction Eqn

Conduction with heat generation in a slab

Heat generation in a cylinder

Analysis of Rectangular fins

Objectives

Efficiency of fin

Fin Effectiveness

Transient (or) unsteady state conduction

Heat Exchangers

First law of thermodynamics applied to any H.R

Precaution

Rotating matrix type of regenerative heat exchangers

Classification of direct transfer type H.E

Temperature profile of Hot and cold fluids

Reason for greater Irreversibility in parallel flow H.E

Mean Temperature Difference

MTD for counter flow H.E

Effectiveness

Fouling Factor

Capacity rate ratio

Effectiveness NTU Mtd of problem solving in H.E

Radiation

Black Body

Monochromatic

Monochromatic Emissivity

Significance of grey body

Absorptivity , Reflection ,Transmissivity

Law of Radiation

Kirchoff’s Law of Radiation

Second law

Stefan Boltzman Law

Lambert’s Cosine law

Intensity of Radiation

Diffuse surface

Shape factor or view factor

Radiation Heat Exchanger b/w two infinitely large parallel plane surfaces

Application of Network Method

Radiation Shields

Convection Heat Transfer

Thermo physical property of fluids

Physical significance of dimensionless number in forced convection

Reynolds number

Nusselt’s number

Prandtss number

Thermal Boundary layer

Coefficient of skin friction

Energy balance

Momentum eqn and distribution for a hydrodynamics boundary

Energy Equation for TBL

Analog b/w fluid friction and H.T

Free convection

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