Consider a tube wall of inner and outer radii r i and r o , whose temperatures are maintained at T i and T o , respectively.The thermal conductivity of the cylinder is temperaturedependent and may be represented by anexpression of the form k = k o 1 + a T , where k o and a are constants. Obtain an expression for the heat transferper unit length of the tube. What is the thermal resistanceof the tube wall?
Consider a tube wall of inner and outer radii r i and r o , whose temperatures are maintained at T i and T o , respectively.The thermal conductivity of the cylinder is temperaturedependent and may be represented by anexpression of the form k = k o 1 + a T , where k o and a are constants. Obtain an expression for the heat transferper unit length of the tube. What is the thermal resistanceof the tube wall?
Solution Summary: The author explains the expression for heat transfer per unit length and thermal resistance of the tube wall.
Consider a tube wall of inner and outer radii
r
i
and
r
o
,
whose temperatures are maintained at
T
i
and
T
o
,
respectively.The thermal conductivity of the cylinder is temperaturedependent and may be represented by anexpression of the form
k
=
k
o
1
+
a
T
,
where
k
o
and a are constants. Obtain an expression for the heat transferper unit length of the tube. What is the thermal resistanceof the tube wall?
what is heat exchanger, what are formulas, and their importance, define the diagram, and give me a script on how to explain the design of heat exchanger, and how did values end up in that number. based on standards . what is dshell
FIGURE P1.37
1.38 WP As shown in Figure P1.38, an inclined manometer is used
to measure the pressure of the gas within the reservoir, (a) Using data
on the figure, determine the gas pressure, in lbf/in.² (b) Express the
pressure as a gage or a vacuum pressure, as appropriate, in lbf/in.²
(c) What advantage does an inclined manometer have over the U-tube
manometer shown in Figure 1.7?
Patm = 14.7 lbf/in.²
L
I
C
i
Gas
a
Oil (p = 54.2 lb/ft³)
140°
8=32.2 ft/s²
15 in.
what is an low pressure Heater, what are formulas, and their importance, define the diagram, and give me a script on how to explain the design of an air preheater, and how did values end up in that number. based on standards
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