All Materials regarding to B.tech R-20 in Mechanical Engineering in 3rd Year 2nd Semester with unit wise for Every Subjects are available.
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| Mech 3-2 Heat Transfer | ||
|---|---|---|
| S.No | Chapters / Units | Download Link |
| 1 | Unit 1 | Download |
| 2 | Unit 2 | Download |
| 3 | Unit 3 | Download / Part 2 |
| 4 | Unit 4 | Download / Part 2 |
| 5 | Unit 5 | Download |
Mech 3-2 Heat Transfer Important Topics Questions
UNIT– I:
Introduction: Modes and mechanisms of heat transfer – Basic laws of heat transfer –General
discussion about applications of heat transfer.
Conduction Heat Transfer: Fourier rate equation – General heat conduction equation in Cartesian,
Cylindrical and Spherical coordinates – simplification and forms of the field equation – steady,
unsteady and periodic heat transfer – Initial and boundary conditions
One Dimensional Steady State Conduction Heat Transfer: Homogeneous slabs, hollow
cylinders and spheres- Composite systems– overall heat transfer coefficient – Electrical analogy –
Critical radius of insulation. Variable Thermal conductivity – systems with heat sources or Heat
generation-Extended surface (fins) Heat Transfer – Long Fin, Fin with insulated tip and Short Fin,
Application to error measurement of Temperature.
UNIT– II:
One Dimensional Transient Conduction Heat Transfer: Systems with negligible internal
resistance – Significance of Biot and Fourier Numbers –Infinite bodies- Chart solutions of transient
conduction systems- Concept of Semi-infinite body.
Convective Heat Transfer: Classification of systems based on causation of flow, condition of
flow, configuration of flow and medium of flow – Dimensional analysis as a tool for experimental
investigation – Buckingham π Theorem and method, application for developing semi – empirical
non- dimensional correlation for convection heat transfer – Significance of non-dimensional
numbers – Concepts of Continuity, Momentum and Energy Equations
UNIT– III:
Forced convection: External Flows: Concepts about hydrodynamic and thermal boundary layer
and use of empirical correlations for convective heat transfer -Flat plates and Cylinders.
Internal Flows: Concepts about Hydrodynamic and Thermal Entry Lengths – Division of internal
flow based on this –Use of empirical relations for Horizontal Pipe Flow and annulus flow.
Free Convection: Development of Hydrodynamic and thermal boundary layer along a vertical plate
- Use of empirical relations for Vertical plates and pipes.
UNIT– IV:
Heat Transfer with Phase Change: Boiling: – Pool boiling – Regimes – Calculations on Nucleate
boiling, Critical Heat flux and Film boiling
Condensation: Film wise and drop wise condensation –Nusselt’s Theory of Condensation on a
vertical plate - Film condensation on vertical and horizontal cylinders using empirical correlations.
Heat Exchangers: Classification of heat exchangers – overall heat transfer Coefficient and fouling
factor – Concepts of LMTD and NTU methods - Problems using LMTD and NTU methods.
UNIT– V:
Radiation Heat Transfer: Emission characteristics and laws of black-body radiation – Irradiation –
total and monochromatic quantities – laws of Planck, Wien, Kirchhoff, Lambert, Stefan and
Boltzmann– heat exchange between two black bodies – concepts of shape factor – Emissivity – heat
exchange between grey bodies – radiation shields – electrical analogy for radiation networks.
TEXT BOOKS:
1) Heat Transfer by HOLMAN, Tata McGraw-Hill.
2) Heat Transfer by P.K.Nag, TMH
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