ME 3042
HEAT TRANSFER
Assignment 3 due on Thursday, September 10, 2009
Mandatory reading and studying assignment:
1.
Notes taken in class
2.
Chapter 2, Example 2.1 (except Comment No 5), pp 6869
3.
Chapter 2, Example 2.2, pp 7577
4.
Chapter 2, Example 2.3, pp 7981
Problem 1.67 (answer all the following questions)
Consider:
C1: steadystate conditions
C2: an opaque receiver (your control volume)
1.
Give the symbolic expression of the net radiation heat rate
rad
q
in terms of the emissive
power
E
, the absorptivity
α
, the irradiation
G
and the surface area
s
A
of the receiver.
Part A: The optical mode:
2.
Determine the symbolic form of each term of the energy balance equation in terms of:
•
the absorptivity
α
,
•
the optical power
opt
P
,
•
the emissive power
E
,
•
the irradiation
G
, and
•
the surface area
s
A
of the receiver.
3.
Determine the symbolic form of the energy balance equation in terms of:
•
the absorptivity
α
,
•
the optical power
opt
P
, and
•
the net radiation heat rate
rad
q
.
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 Fall '08
 Any
 Thermodynamics, Heat Transfer, Black body, net radiation heat, radiation heat rate

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