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Posted Date: 29 Jan 2020      Posted By:: Shouvik Maj    Member Level: Silver  Points: 3 (₹ 2)

2019 B.E Mechanical Engineering B.E Jadavpur University Mechanical Engineering- Heat Transfer (2nd Year First Semester) -2019 Question paper

Course: B.E Mechanical Engineering   University/board: Jadavpur University

Are you looking for previous year question papers of 2nd year in Mechanical Engineering stream of Heat Transfer? In this page you will get your question paper and thus practice for your Exam.

{Please scroll below to get the PDF file of the Question paper given as attachment}
B.E Mechanical Engineering 2nd year, 1st Semester
-Heat Transfer-

Total Time - 3 Hours
Full Marks - 100


1. Introduction: Modes of heat transfer - (1 lecture)
2. Conduction: Fourier law of heat conduction for isotropic material. Thermal conductivity. Derivation of
general heat conduction equation. Non- dimensionalisation- thermal diffusivity and Fourier number.
Types of boundary conditions. Solution of steady one dimensional conduction problem with and without
heat generation. Analogy with electrical circuits. Critical thickness of insulation. Fins-rectangular and pin
fins. Fin effectiveness and efficiency. Lumped parameter approach and significance of time constant. Biot
number Solution of I-D transient heat conduction equation without generation using product solution. -
(10 lectures)
3. Radiation: Physical mechanism of thermal radiation. Laws of radiation. definition of black body, emissive
power. radiation intensity.reflectivity. transmissivity. irradiation, radiosity.Radiation exchange between
black bodies Concept of grey- ditIuse-isotropic (OD!) surface. Exchange between GDI surfaces by
radiation network method. Radiation shielding. - (8 lectures)
4. Convection: Introduction. Newton's law of cooling and significance of heat transfer coefficient. Momentum
and energy equation in two-dimensions. Non-dimensionalisation and significance of non-dimensional
quantities. Scale analysis for flow over flat-plate. Velocity and thermal boundary layer thickness by integral
method. Natural convection-effect of coupling on the conservation equation. One dimensional solution for
COllette and Poiseulli flow.Concept of developing and developed How. Correlations-forced convection for
external and internal flows. natural convection over a vertical llat-plate.- (15 Iectures)
5. Heat exchangers: Types of heat exchangers. Introduction to UVITD. Correction factor. Fouling factor
Effcctiveness-NTU method for heat exchangers, rating and sizing. - (4 lectures)
6. Boiling and condensation: Pool boiling curve. D.N.B, critical heat nux. drop and filmwise condensation,
laminar film condensation on a vertical plate


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