Heat and Mass Transfer

Teacher

Dr.Ashok Misra

Category

Core Courses

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Course Name : Heat and Mass Transfer

Code(Credit) : CUTM1525(2+1+1)

Course Objectives

  • To understand the basic concepts and mechanisms of heat and mass transfer under steady state and transient conditions.

Learning Outcomes

  • Apply heat conduction equations to different surface configurations under steady state and transient conditions and solve problems.
  • Apply free and forced convective heat transfer correlations to internal and external flows through/over various surface configurations and solve problems.
  • Explain basic laws for radiation and apply these principles to radiative heat transfer between different types of surfaces to solve problems.
  • Apply diffusive and convective mass transfer equations and correlations to solve problems for different applications.

Course Syllabus

Module I (T-3 Hrs.+Pr-2Hrs.+Pj-2Hrs.)

Conduction:

Fourier’s Law of Conduction, General Heat Conduction Equation in Different Coordinate Systems (No Derivation), One Dimensional Steady State Conduction in Plane Wall, Composite Wall, One Dimensional Steady State Conduction in Composite Cylinders and Composite Spheres with Convective Atmosphere. Electrical Analogy, Conduction with Internal Heat Generation.

Practice 1: To find the thermal conductivity of a material by the two slabs guarded hot plate method.

Project 1: Assignment on Conduction.

Module II (T-2 Hrs.+Pr-2Hrs.+Pj-2Hrs.)

Fins and Transient Conduction:

Overall Heat Transfer Coefficients, Critical Thickness of Insulation, Heat Transfer from Extended Surfaces, Effectiveness and Efficiency, Unsteady State Heat Conduction, Lumped Heat Capacity System and Lumped Capacitance Method.

Practice 2: To find the thermal resistance of the sample.

Project 2: Assignment on Fins and Transient Conduction.

Module III (T-4 Hrs.+Pr-4Hrs.+Pj-2Hrs.)

Convection:

Hydrodynamic and Thermal Boundary Layer, Principles and Governing Equations, Forced Convection: External Flow over a Flat Plate, Cylinder, Sphere and Non-Circular Ducts, Use of Empirical Relations, Internal Flow Through Pipe, Annular Spaces and Non-Circular Conduits, Natural Convection: Vertical, Horizontal, Inclined Surfaces.

Practice 3: To determine the overall heat transfer coefficient at the surface of a given vertical metal cylinder by the natural convection method.

Practice 4:  To verify Newton's Law of Cooling of different materials and different liquids.

Project 3: Assignment on Convection.

Module IV (T-2 Hrs.)

Heat Transfer with Phase Change:

Film Wise and Drop Wise Condensation, Boiling Heat Transfer, Regimes of Boiling.

Module V (T-2 Hrs.+Pr-2Hrs.+Pj-2Hrs.)

Heat Exchangers:

Types of Heat Exchangers, Heat Exchanger Analysis, LMTD, Overall Heat Transfer Coefficient, Heat Exchanger Effectiveness, NTU.

Practice 5: Determination of Effectiveness and Efficiency of Parallel Flow and Counter Flow Heat Exchanger.

Project 4: Assignment on Heat Exchangers.

Module VI (T-4 Hrs.+Pr-2Hrs.+Pj-2Hrs.)

Radiation:

Electromagnetic Spectrum, Black Body Emission, Emissive Power, Laws of Radiation, Nature of Black and Grey Bodies, Concepts, Radiation Shape Factor, Thermal Resistance and Electrical Analogy, Radiation Heat Transfer Between Two Surfaces, Reradiating Surface, Radiation Shield.

Practice 6: To find the emissivity of different material surface.

Project 5: Assignment on Radiation.

Module VII (T-3 Hrs.+Pj-2Hrs.)

Mass Transfer:

Introduction, Analogy between heat and mass transfer, Mass diffusion, Fick’s law of diffusion, boundary conditions, Steady mass diffusion through a wall, Mass convection.

Project 6: Assignment on Mass Transfer.

Text Books:

  1. Mahesh M. Rathore, Engineering Heat Transfer , Jones & Bartlett Learning, 2011
  2. Yunus A. Cengel & Afshin J. Ghajar, “Heat and Mass Transfer-Fundamentals and Applications”, McGraw Hill, 5th Edition 2015
  3. Yunus Cengel, Heat And Mass Transfer: Fundamentals And Applications, McGraw-Hill Higher Education, 2014

Reference Books:

  1. C Sachdeva, Fundamentals of Heat and Mass Transfer
  2. K. Rajput, Heat Transfer, Laxmi Publication

Session Plan

Session 1

Fourier’s Law of Conduction, General Heat Conduction Equation in Different Coordinate Systems (No Derivation), One Dimensional Steady State Conduction in Plane Wall, Composite Wall.

https://www.youtube.com/watch?v=hz058PnzUCE&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=5

https://www.youtube.com/watch?v=6Zpf3YpkNCM&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=2

https://www.youtube.com/watch?v=w58EujeBk6s

https://www.youtube.com/watch?v=L3ig-2wPbkM

Session 2

One Dimensional Steady State Conduction in Plane Wall, Composite Wall, One Dimensional Steady State Conduction in Composite Cylinders and Composite Spheres with Convective Atmosphere.

https://www.youtube.com/watch?v=o7Mq4Rdyd1k&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=6

Session 3

Electrical Analogy, Conduction with Internal Heat Generation.

 

https://www.youtube.com/watch?v=qVmYGVv5-dg&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=8

Sessions 4 & 5

Practice 1. To find the thermal conductivity of a material by the two slabs guarded hot plate method.

http://vlab.amrita.edu/?sub=1&brch=194&sim=801&cnt=1

http://htv-au.vlabs.ac.in/heat-thermodynamics/Heat_Transfer_by_Conduction/

Sessions 6 & 7

Project 1. Assignment on Conduction.

Session 8

Overall Heat Transfer Coefficients, Critical Thickness of Insulation, Heat Transfer from Extended Surfaces, Effectiveness and Efficiency.

https://www.youtube.com/watch?v=g6_H1GOxad4&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=11

Session 9

Unsteady State Heat Conduction, Lumped Heat Capacity System and Lumped Capacitance Method

https://www.youtube.com/watch?v=cOoq41vOono&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=12

Sessions 10 & 11

Practice 2. To find the thermal resistance of the sample.

http://vlab.amrita.edu/?sub=1&brch=194&sim=801&cnt=1

Sessions 12 & 13

Project 2. Assignment on Fins and Transient Conduction.

Session 16

Use of Empirical Relations, Internal Flow Through Pipe, Annular Spaces and Non-Circular Conduits.

https://www.youtube.com/watch?v=WMUV8Nm1yJc&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=33

Session 17

Natural Convection: Vertical, Horizontal, Inclined Surfaces.

https://www.youtube.com/watch?v=WMUV8Nm1yJc&list=PLbRMhDVUMngeygd_uWiLqa3fzA2h7vdRx&index=33

Sessions 18 & 19

Practice 3. To determine the overall heat transfer coefficient at the surface of a given vertical metal cylinder by the natural convection method.

http://vlab.amrita.edu/?sub=1&brch=194&sim=791&cnt=1

http://htv-au.vlabs.ac.in/heat-thermodynamics/Heat_Transfer_by_Natural_Convection/

Sessions 20 & 21

Practice 4. To verify Newton's Law of Cooling of different materials and different liquids.

http://vlab.amrita.edu/?sub=1&brch=194&sim=354&cnt=1

http://htv-au.vlabs.ac.in/heat-thermodynamics/Newtons_Law_of_Cooling

Sessions 22 & 23

Project 3. Assignment on Convection.

Session 24

Film Wise and Drop Wise Condensation.

https://www.youtube.com/watch?v=N1yZwRcQSZw

Session 25

Boiling Heat Transfer, Regimes of Boiling.

https://www.youtube.com/watch?v=6OGnB9tywtI

Sessions 28 & 29

Practice 5. Determination of Effectiveness and Efficiency of Parallel Flow and Counter Flow Heat Exchanger.

https://www.youtube.com/watch?v=w9A_0IlJrdg

Sessions 30 & 31

Project 4. Assignment on Heat Exchangers.

Session 33

Sessions 36 & 37

Sessions 38 & 39

Project 5. Assignment on Radiation.

Session 40

Session 42

Sessions 43 & 44

Project 6. Assignment on Mass Transfer.

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