THE UNIVERSITY OF HONG KONG
DEPARTMENT OF MECHANICAL ENGINEERING
MECH3011/4411: HEAT TRANSFER
MIDTERM TEST
Date: March 27, 2015
Time: 1.20pm2.20pm
VENUE: KB115
University number:
Name:
Consider a steam pipe of length L, inner radius , outer radius , and c

Quiz 2
2015615
9:24
A rectangular metallic slab with thickness ta = 40 mm
is mounted on an electric insulating substrate with
thickness tb = 10 mm and thermal conductivity kb = 10
W/mK. The side surfaces of the slab and the substrate
are adiabatic such th

Vm335 Heat Transfer
Homework 6
Name:
Student ID:
Date Due: 10:00 a.m., Wednesday, July 1, 2015
Note: Before you work on this homework, you should read Section 6.1-6.7.2 & 7.1-7.5.
Find the problems below in the 6th edition of the textbook and solve them.

Mid-Term Exam Vm335
BASIC EQUATION SHEET
Conservation Laws
.
.
.
.
.
.
.
Control Volume Energy Balance: Ein Eout + Egen =
Est ; Est = mC p dT
dt
.
; Egen = qV
.
Surface Energy Balance: Ein Eout =
0
Conduction
T
T "
"
; qcond ,n = k
; qcond = qcond
A
n
x

Vm335 Heat Transfer
Homework 7
Name:
Student ID:
Date Due: 10:00 a.m., Wednesday, July 9, 2014
Note: Before you work on this homework, you should read Section 8.1-8.5, 9.1-9.6, 10.110.4 & 10.6-10.9
Find the problems below in the 6th edition of the textboo

Vm335 Heat Transfer
Homework 1
Name:
Student ID:
Date Due: 10:00 a.m., Wednesday, May 20, 2015
Note: Before you work on this homework, you should read Section 1.1-1.7 & 2.1.
Find the problems below in the 6th edition of the textbook and solve them.
1. Pro

Vm335 Heat Transfer
Homework 5
Name:
Student ID:
Date Due: 10:00 a.m., Wednesday, June 18, 2014
Note: Before you work on this homework, you should read Section 5.4-5.8 & 5.10-5.11.
Find the problems below in the 6th edition of the textbook and solve them.

Vm335 Heat Transfer
Homework 10
Name:
Student ID:
This is the last homework and you dont have to submit it. But I highly recommend
you to work on this because this will be part of the final exam.
Solutions will be uploaded next week so that you can check

Vm335 Heat Transfer
Homework 9
Name:
Student ID:
Date Due: 10:00 a.m., Wednesday, July 23, 2014
Note: Before you work on this homework, you should read Section 12.5-12.8, 13.1
Find the problems below in the 6th edition of the textbook and solve them.
1. P

FORMULA SHEET
Conservation Laws
.
.
.
.
.
.
.
Control Volume Energy Balance: Ein Eout Egen Est ; Est mC p dT
dt
.
; Egen qV
.
Surface Energy Balance: Ein Eout 0
Conduction
T "
T
"
; qcond ,n k
; qcond qcond
A
n
x
T T T
Heat Flux Vector: q" q"x i q"y j q"

2015524
20:07
A square glass window of width W = 1m is composed of three layers, as shown in the figure. The
interior layer and outer layer are glass with thickness tg = 5 mm, while the intermediate layer is an air
gap with thickness ta = 5 mm. Heat trans

Quiz 4
Cold air flows axially over a hot cylindrical rod, causing it to cool in a transient fashion.
Convection on the ends of the rod and axial conduction are negligible, so that rod
temperature is a function only of time t and radial position r. You are

2
Greenhouse effect is a process related to the thermal radiative heat change between the sun, the
earth, and the atmosphere. Global warming, a recent warming of the Earth's surface and lower
atmosphere, is believed to be the result of a strengthening of

2009 A1
(a) The inner surface of the base plate is subjected to uniform heat flux at
q = 1200W/0.03m2 = 40000W/m2
The outside of the plate is subjected to the convection condition.
Taking the direction normal to the surface of the plate as x direction wit

Chapter-2 Fundamental Concepts of Conduction
ME-315
Hua Ouyang
School of Mechanical Engineering
Shanghai Jiao Tong University
Heat Transfer
Shanghai Jiao Tong University
2-1 The Conduction Rate Equation Fouriers Law
Temperature field instantaneous temper

Chapter-4 Two-Dimensional, Steady-State
Conduction
ME-315
Hua Ouyang
School of Mechanical Engineering
Shanghai Jiao Tong University
Heat Transfer
Shanghai Jiao Tong University
Integrated Mathematical formulation of heat conduction
heat diffusion equation

External Flow:
Flow over Bluff Objects
(Cylinders, Spheres)
Chapter 7
Sections 7.4 through 7.8
1. The Cylinder in Cross Flow
Flow Considerations
Conditions depend on special features of boundary layer development, including onset
at a stagnation point an

Chapter-5 Transient Conduction
ME-315
Hua Ouyang
School of Mechanical Engineering
Shanghai Jiao Tong University
Heat Transfer
Shanghai Jiao Tong University
Transient (Unsteady-state) Conduction
A heat transfer process for which the temperature varies wit

Free Convection:
General Considerations
Chapter 9
Sections 9.1 through 9.6.2, 9.9
General Considerations
Free convection refers to fluid motion induced by buoyancy forces.
Buoyancy forces will appear in a fluid where there are density gradient
and a bod

Introduction to Convection:
Flow and Thermal Considerations
Chapter Six and Appendix D
Sections 6.1 through 6.8
and D.1 through D.3
Chang-Ying ZHAO (
Office: A417, Tel: 34204541
Email: Changying.zhao@sjtu.edu.cn
Definition of Convection Heat Transfer
Conv

PROBLEM 4.3
KNOWN: Temperature distribution in the two-dimensional rectangular plate of Problem 4.2.
FIND: Expression for the heat rate per unit thickness from the lower surface (0 x 2, 0) and result
based on first five non-zero terms of the infinite seri

PROBLEM 3.3]
KNOWN: Temperature dependence of the thermal conductivity, k.
FIND: Heat ux and form oftemperature distribution for a plane wall.
SCHEMATIC:
_ k = kc, + 37' T a 1, O
75 t. H 7.; a=0
(rbif'rary a < O
T. collection)
" I 7i
x
lrx i O L
ASSUMPTIO

Vm335 Heat Transfer
Homework 3
Name:
Student ID:
Date Due: 10:00 a.m., Wednesday, June 3, 2015
Note: Before you work on this homework, you should read Section 3.3-3.6.2.
Find the problems below in the 6th edition of the textbook and solve them.
1. Problem