Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470501979
Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine
Publisher: Wiley, John & Sons, Incorporated
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Chapter 3, Problem 3.63P
A storage tank consists of a cylindrical section that has a length and inner diameter of
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The rectangular wall of a furnace consists of 3in. fire clay brick surrounded by 0.25in. of steel on the outside. There are six 0.25in.diameter mild steel bolts per square foot connecting the steel and the brick. The furnace is surrounded by 70°F air (with a film coefficient of 1.65 Btu/hr-ft²-°F), while the inner surface of the brick is maintained at a constant 1000°F. Determine the heat flux per square foot through this wall?
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a
production field.
(1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is
used to transport warm crude oil through cold ocean water. The inner steel pipe (k, = 45 W/m-K) has an inside diameter of D;1 =
150 mm and wall thickness t; = 20 mm while the outer steel pipe has an inside diameter of D; 2 = 250 mm and wall thickness
to = tj. Determine the maximum allowable crude oil temperature to ensure the polyurethane foam insulation (k,
between the two pipes does not exceed its maximum service temperature of T, max = 70°C. The ocean water is at T , = -5°C and
provides an external convection heat transfer coefficient of h, = 500 W/m2-K. The convection coefficient associated with the
flowing crude oil is h¡ = 450 W/m2-K.
= 0.03 W/m-K)
(2) It is proposed to enhance the performance of the…
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation
from a production field.
(1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The
inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, = 35 W/m-K) has an
inside diameter of D; 1
= 150 mm and wall thickness t;
= 20 mm while the outer steel pipe has an inside diameter of
= 250 mm and wall thickness to = tj. Determine the maximum allowable crude oil temperature to ensure the
Di,2
= 0.0425 W/m-K) between the two pipes does not exceed its maximum service
= -5°C and provides an external convection heat transfer
polyurethane foam insulation (kp
temperature of T,
р, max
= 70°C. The ocean water is at T
o, 0
coefficient of ho
500 W/m2.K. The convection coefficient associated with the flowing crude oil is h;
= 450 W/m2-K.
(2) It is proposed to enhance the performance of…
Chapter 3 Solutions
Fundamentals of Heat and Mass Transfer
Ch. 3 - Consider the plane wall of Figure 3.1, separating...Ch. 3 - A new building to be located in a cold climate is...Ch. 3 - The rear window of an automobile is defogged by...Ch. 3 - The rear window of an automobile is defogged by...Ch. 3 - A dormitory at a large university, built 50 years...Ch. 3 - In a manufacturing process, a transparent film is...Ch. 3 - The walls of a refrigerator are typically...Ch. 3 - A t=10-mm -thick horizontal layer of water has a...Ch. 3 - A technique for measuring convection heat transfer...Ch. 3 - The wind chill, which is experienced on a cold,...
Ch. 3 - Determine the thermal conductivity of the carbon...Ch. 3 - A thermopane window consists of two pieces of...Ch. 3 - A house has a composite wall of wood, fiberglass...Ch. 3 - Consider the composite wall of Problem 3.13 under...Ch. 3 - Consider a composite wall that includes an...Ch. 3 - Work Problem 3.15 assuming surfaces parallel to...Ch. 3 - Consider the oven of Problem 1.54. 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