Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Steady Heat Conduction (Chapter 17)
Steady Heat Conduction in Plane Walls (Section 17-1)
Heat transfer through the wall of a house can be
modeled as steady and one-dimens

Midterm Review Lecture (Chapters 1 to 7)
Course Introduction and Overview (Chapter 1)
Thermodynamics (Section 1-2)
Thermodynamics: The science of energy.
From the Greek words therme (heat) and dynamis (power).
Thomas Savery (1697): Miners Friend
Thomas Ne

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Steady Heat Conduction (Chapter 17)
Fin Equation
d2 T
dx2
hp
(T
kAc
T1 ) = 0
1. Infinitely Long Fin
2. Negligible Heat Loss from the Fin Tip (Adiabatic fin tip)
3. Specif

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Forced Convection (Chapter 19)
Physical Mechanism of Convection (Section 19-1)
Conduction and convection both require the
presence of a material medium but convection
req

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Forced Convection (Chapter 19)
Parallel Flow Over Flat Plates (Section 19-3)
The transition from laminar to turbulent flow
depends on the surface geometry, surface
roughn

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Forced Convection (Chapter 19)
What did we learn from last lecture?
1. Convection analysis for flow in pipes requires an understanding of the flow behaviour.
2. Flow is l

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Natural Convection (Chapter 20)
Natural Convection Over Surfaces (Section 20-3)
Empirical correlations of the form:
Natural convection heat transfer on a surface depends

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Steady Heat Conduction (Chapter 17)
Heat Conduction in Cylinders and Spheres (Section 17-4)
Cylindrical Layer
Heat transfer through the pipe can be modeled as
steady and

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Radiation Heat Transfer (Chapter 21)
Introduction (Section 21-1)
Radiation differs from conduction and convection in that it does
not require the presence of a material m

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Forced Convection (Chapter 19)
General Considerations for Pipe Flow (Section 19-5)
Liquid or gas flow through pipes or ducts is commonly used in
heating and cooling appl

Entropy (Chapter 8)
Example:
Refrigerant-134a is throttled from 1200 kPa and 40C to 200 kPa. Heat is lost from the refrigerant
in the amount of 0.5 kJ/kg to the surroundings at 25C. Determine (a) the exit temperature of the
refrigerant and (b) the entropy

Entropy (Chapter 8)
Entropy Change of Pure Substances (Section 8-3)
Entropy is a property, and thus the value of
entropy of a system is fixed once the state of
the system is fixed (two intensive independent
properties fixes the state of a simple
compressi

Properties of Pure Substances (Chapter 4)
Property Tables (Section 4-5)
! For most substances, the relationships among thermodynamic properties are too complex
to be expressed by simple equations.
! Therefore, properties are frequently presented in the fo

Energy, Energy Transfer, and Energy Analysis (Chapter 3)
Forms of Energy (Section 3-2)
Numerous forms of energy: thermal, mechanical, kinetic, potential,
electric, magnetic, chemical, and nuclear, and their sum
constitutes the total energy, E of a system

Energy, Energy Transfer, and Energy Analysis (Chapter 3)
Mechanical Forms of Work (Section 3-5)
Work = Force x Distance
W = Fs
(kJ)
When force is not constant:
W =
Two requirements for a work interaction between a
system and its surroundings:
1.! there mu

Energy, Energy Transfer, and Energy Analysis (Chapter 3)
Mechanical Forms of Work (Section 3-5)
Work = Force x Distance
W = Fs
(kJ)
When force is not constant:
W =
Two requirements for a work interaction between a
system and its surroundings:
1. there mus

MECE 2640U Thermodynamics and Heat Transfer
Introduction to the course
Part 1: About me. What research do I do?
Professor Brendan MacDonald
Research Projects
Evaporative Cooling using Sessile Droplets
Marangoni
convection
Gatorade
Temperature
disc

Mass and Energy Analysis of Control Volumes (Chapter 6)
Some Steady-Flow Engineering Devices (Section 6-4)
A modern land-based gas turbine used for electric power production
(General Electric LM5000 turbine). It has a length of 6.2 m, weighs
12.5 tons, an

Review of Property Tables Quiz
P, kPa
T, C
v, m3/kg
250
535.35
300
175
h, kJ/kg
40
2.6389
Condition description and quality
Energy Analysis of Closed Systems (Chapter 5)
Moving Boundary Work (Section 5-1)
Assume a quasi-equilibrium process:
Wb =
Z
2
P dV

Energy Analysis of Closed Systems (Chapter 5)
Example 5-5:
A piston-cylinder device contains 25 g of saturated water vapour that is maintained at a constant
pressure of 300 kPa. A resistance heater within the cylinder is turned on and passes a current of

The Second Law of Thermodynamics (Chapter 7)
Introduction to the Second Law (Section 7-1)
The first law of thermodynamics (conservation of energy) is not sufficient to completely describe the
nature of energy transport. Some processes cannot occur even th

The Second Law of Thermodynamics (Chapter 7)
The Carnot Cycle (Section 7-6)
The net work, and thus cycle efficiency, can be maximized by using processes that require
the least amount of work and deliver the most: reversible processes.
Reversible cycles

Some material is from:
Fundamentals of Heat and Mass
Transfer, Bergman et al. (2011)
Review Lecture
Entropy (Chapter 8)
This is a new thermodynamic
dS =
property, entropy:
S = S2
S1 =
Z
Q
T
2
1
(kJ/K)
int rev
Q
T
(kJ/K)
int rev
The entropy change between