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 stea
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 surfa
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 be
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
Co
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
Fi
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
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 b
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.
Solu
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
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
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 l
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
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
atmosphe
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 directio
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 Equat
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
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 laye
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 hea
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 appea
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: [email protected]
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
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
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