This course is aimed at Mechanical Engineering students writing Heat Transfer subject as part of their 3 year 2nd semester
We will be covering the following topics in the course:
Watch the course Intro video at the bottom of the page
HEAT & MASS TRANSFER TUTION
This course is aimed at Mechanical Engineering students writing Heat Transfer subject as part of their 3 year 2nd semester
We will be covering the following topics in the course:
Watch the course Intro video at the bottom of the page
UNIT – I
Introduction, Basic Modes of heat transfer – Fundamental laws of heat transfer – Simple General discussion about applications of heat transfer.
Conduction Heat Transfer: Fourier Heat transfer 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.
UNIT – II
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 and fins.
One Dimensional Transient Conduction Heat Transfer:Systems with negligible internal resistance -Chart solutions of transient conduction systems.
UNIT – III
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 Il Theorem and method, application for developing semi – empirical non-dimensional correlation for convection heat transfer – Significance of non-dimensional numbers – use of empirical correlation for convective heat transfer.
Forced convection: External Flows: Flat plates and Horizontal pipes. Free Convection: Vertical plates and pipes-concepts about Hydrodynamic and thermal boundary layer along a vertical plate.
UNIT – IV
Heat Transfer With Phase Change: Boiling:– Pool boiling- Calculations on Nucleate boiling, Critical Heat flux and Film boiling.
Condensation: Film wise and drop wise condensation -Film Condensation on a vertical and horizontal cylinders using empirical correlations.
Radiation Heat Transfer: Emission characteristics and laws of black-body radiation – Irradiation – total and monochromatic quantities – laws of Planck, Wien, Kirchoff, 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.
UNIT – V
Heat Exchanges: Classification of heat exchanges – overall heat transfer Coefficient and fouling factor – Concepts of LMTD and NTU methods – Problems using LMTD and NTU methods
UNIT – 5 : HEAT EXCHANGERS rough notes click here:
