Bergman, Lavine, Incropera, Dewitt, Intro. to Heat Transfer, 6th Ed.
Whitaker, Fundamental Principles of Heat Transfer
Whitaker, Fundamental Principles of Heat Transfer
Whitaker, Fundamental Principles of Heat Transfer
Bergman, Lavine, Incropera, Dewitt, Intro. to Heat Transfer, 6th Ed.
Whitaker, Fundamental Principles of Heat Transfer
T
-Steady State
-2-D
-Laminar Flow
Whitaker, Fundamental Principles of Heat Transfer
Steady Boundary Layer Equations for Planar Surface
-Steady State
-2-D
-Laminar Flow
-Constant , , k
-No rev. work
-No irrev. Work
-No heat generation term
Dimensionless G
Governing Equations for Mass, Momentum and
Thermal Energy
+ v = 0
t
( )
v
+ v v = g + T
t
T + v T = q + T Dp + v : +
Cp
Dt
t
Whitaker, Fundamental Principles of Heat Transfer
Total area, Aa(t), composed of three distinct types
Aa (t) =
Ae (t) +
Area
Bergman, Lavine, Incropera, Dewitt, Intro. to Heat Transfer, 6th Ed.
BSL
H
L
Bergman, Lavine, Incropera, Dewitt, Intro. to Heat Transfer, 6th Ed.
Cellular flow in a vertical cavity, 2 H/L 10 and 1 H/L 2
Bergman, Lavine, Incropera, Dewitt, Intro. to Heat T
ChemE 101B: Heat Transfer
Discussion, Week 2
TA: Mac Clay
Heat Flow through Composite Cylindrical Pipe (BSL Example 10.6-1):
(a familiar situation presented as an explicit problem)
A pipe is made from 3 layers
ChemE 101B: Heat Transfer
Discussion, Week 3
TA: Mac Clay
Conduction with Temperature-Dependent Thermal Conductivity (BSL
10.B12):
=
r1
=0
r2
T=T
T=T0
Heat travels in the theta dir
ChemE 101B: Heat Transfer
Discussion, Week 4
TA: Mac Clay
Adiabatic and frictionless processes in an ideal gas (BSL example 11.4-6):
How do we solve for the heat properties of an ideal gas in an adiabatic (
ChemE 101B: Heat Transfer
Discussion, Week 5
TA: Mac Clay
Free-Convection Heat Transfer from a Vertical Plate (BSL Ex. 11.4-5):
Remember from lecture:
A large, hot, flat plate is submerged in fluid and creates
Porous spherical shells
Air ow out
Fig. 11.4-1. Transpiration cooling. The
inner sphere is being cooled by means
of a refrigeration coil to maintain its
temperature at TK. When air is blown
outward, as shown, less refrigeration is
required.
BSL ~ Fi . 1
PROBLEM 11.49
KNOWN: Conditions of oil and water for heat exchanger, one shell with 4 tube passes.
FIND: Length of exchanger tubes per pass, L; and (b) Compute and plot the effectiveness, , fluid outlet
temperatures, Th,o and Tc,o, and water-side convecti
Chemical & Biomolecular Engineering 101B
Homework #1
Due 1/15/2015
Read: BSL ch. 9-10
1. BSL 9A.1
2. BSL 9A.5
3. An apparatus for measuring thermal conductivity of solids employs an electrical
heater sandwiched between two identical samples of diameter 30
Chemical & Biomolecular Engineering 101B
Homework #6
Due 2/19/2015
1. BSL 12B.2. Notes: In part b, substitute 12B.2-4 into 12B.2-3 and evaluate as an
integral on . In part c, set the quantity in brackets equal to 2 (simply because it works
well) and solve
Chemical & Biomolecular Engineering 101B
Homework #2
Due 1/22/2015
Read: BSL ch. 11, 12
1. Derive the Special Form of the Reynolds Transport Theorem,
D
DS
t S dV =V t Dt dV ,
Dt Vm ( )
m( )
where S is a scalar function using the Continuity Equation, th
Chemical & Biomolecular Engineering 101B
Homework #3
Due 1/29/2015
Read: BSL ch. 11, 12
1. In our analysis of transient heat conduction in a semi-infinite slab, we arrived at the
following expression for the dimensionless temperature:
2
( ) = 1
e d = 1
Chemical & Biomolecular Engineering 101B
Homework #9
Due 3/12/2015
1. 15A.1
2. 15B.1
3. 15B.8
4. Show that BSL Eq. 15.4-14 holds for the counter-flow case as well. Keep the flow direction
of the cold stream the same, but have the hot stream enter at plane