Introduction to Heat Transfer
6th Edition
ISBN: 9780470501962
Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine
Publisher: Wiley, John & Sons, Incorporated
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Chapter 4, Problem 4.22P
To determine
The conduction heat transfer through an individual stainless steel pillar.
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An engineer proposes to decrease the gap between the windows of
double pane window to decrease heat transfer. Is it good approach or
not?
O Yes, because by this way, less air will be trapped and therefore better insulation
O Yes, because by this way, radiation heat transfer will decrease
O Not sufficient information
O No, because by this way, radiation heat transfer will increase
O No, because by this way, current loops will be created inside the gap
A brass plate has a circular hole whose diameter is slightly smaller than the diameter of an aluminum ball. Ifthe ball and the plate are always kept at the same temperature,(a) should the temperature of the system be increased or decreasedin order for the ball to fit through the hole? (b) Choose the bestexplanation from among the following:I. The aluminum ball changes its diameter more with temperature than the brass plate, and therefore the temperatureshould be decreased.II. Changing the temperature won’t change the fact that the ballis larger than the hole.III. Heating the brass plate makes its hole larger, and that willallow the ball to pass through.
Please include a free body diagram and assumptions
Chapter 4 Solutions
Introduction to Heat Transfer
Ch. 4 - In the method of separation of variables (Section...Ch. 4 - A two-dimensional rectangular plate is subjected...Ch. 4 - Consider the two-dimensional rectangular plate...Ch. 4 - A two-dimensional rectangular plate is subjected...Ch. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Free convection heat transfer is sometimes...Ch. 4 - Prob. 4.8PCh. 4 - Radioactive wastes are temporarily stored in a...Ch. 4 - Based on the dimensionless conduction heat rates...
Ch. 4 - Prob. 4.11PCh. 4 - A two-dimensional object is subjected to...Ch. 4 - Prob. 4.13PCh. 4 - Two parallel pipelines spaced 0.5 m apart are...Ch. 4 - A small water droplet of diameter D=100m and...Ch. 4 - Prob. 4.16PCh. 4 - Pressurized steam at 450 K flows through a long,...Ch. 4 - Prob. 4.19PCh. 4 - A furnace of cubical shape, with external...Ch. 4 - Prob. 4.21PCh. 4 - Prob. 4.22PCh. 4 - A pipeline, used for the transport of crude oil,...Ch. 4 - A long power transmission cable is buried at a...Ch. 4 - Prob. 4.25PCh. 4 - A cubical glass melting furnace has exterior...Ch. 4 - Prob. 4.27PCh. 4 - An aluminum heat sink k=240W/mK, used to coolan...Ch. 4 - Hot water is transported from a cogeneration power...Ch. 4 - Prob. 4.30PCh. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - An igloo is built in the shape of a hemisphere,...Ch. 4 - Consider the thin integrated circuit (chip) of...Ch. 4 - Prob. 4.35PCh. 4 - The elemental unit of an air heater consists of a...Ch. 4 - Prob. 4.37PCh. 4 - Prob. 4.38PCh. 4 - Prob. 4.39PCh. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - Determine expressions for...Ch. 4 - Prob. 4.43PCh. 4 - Prob. 4.44PCh. 4 - Prob. 4.45PCh. 4 - Derive the nodal finite-difference equations for...Ch. 4 - Prob. 4.47PCh. 4 - Prob. 4.48PCh. 4 - Consider a one-dimensional fin of uniform...Ch. 4 - Prob. 4.50PCh. 4 - Prob. 4.52PCh. 4 - Prob. 4.53PCh. 4 - Prob. 4.54PCh. 4 - Prob. 4.55PCh. 4 - Prob. 4.56PCh. 4 - Steady-state temperatures at selected nodal points...Ch. 4 - Prob. 4.58PCh. 4 - Prob. 4.60PCh. 4 - The steady-state temperatures C associated with...Ch. 4 - A steady-state, finite-difference analysis has...Ch. 4 - Prob. 4.64PCh. 4 - Consider a long bar of square cross section (0.8 m...Ch. 4 - Prob. 4.66PCh. 4 - Prob. 4.67PCh. 4 - Prob. 4.68PCh. 4 - Prob. 4.69PCh. 4 - Consider Problem 4.69. An engineer desires to...Ch. 4 - Consider using the experimental methodology of...Ch. 4 - Prob. 4.72PCh. 4 - Prob. 4.73PCh. 4 - Prob. 4.74PCh. 4 - Prob. 4.75PCh. 4 - Prob. 4.76PCh. 4 - Prob. 4.77PCh. 4 - Prob. 4.78PCh. 4 - Prob. 4.79PCh. 4 - Prob. 4.80PCh. 4 - Spheres A and B arc initially at 800 K, and they...Ch. 4 - Spheres of 40-mm diameter heated to a uniform...Ch. 4 - To determine which parts of a spiders brain are...Ch. 4 - Prob. 4.84P
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- Calculate the heat loss through a 1-m by 3-m glass window 7mm thick if he inner surfacetemperatures is 20C and outer surface temperature is 17C. Sketch the figure.arrow_forwardFind the amount of heat transfer transmitted through a west window (5 m2) 6 mm clear single glass window without interior shading in Amman in July at 15 pm. Assume ho=22.7 W/m2.K and the construction is heavy.arrow_forward(a) What is the rate of energy loss in watts per square meter through a glass window 2.9 mm thick if the outside temperature is -15°F and the inside temperature is +78°F? (b) A storm window having the same thickness of glass is installed parallel to the first window, with an air gap of 6.8 cm between the two windows. What now is the rate of energy loss if conduction is the only important energy- loss mechanism? (The thermal conductivity of window glass is 1.0 W/m-K, and of air is 0.026 W/m.K.) Jak w (a) Number i (b) Number i Units Units ✪ ✪arrow_forward
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- LTE !!!: خاص A docs.google.com Untitled Question Q1/ consider a (0.8m) high and (1.5m) wide double pane widow consisting of two (4mm) thick layers of glass (k=0.78W/m.°C) separated by a (10mm) wide stagnant air space (k=0.026W/m.°C). ). Take the (hi) on the inner surface = 10W/m2.°C and (ho) on the outer surface = 40W/ m².°C. Determine Your answer The steady rate of heat transfer through this double pane window is equal * 69.28W 6528W 6.028W 692.8W The temperature of its inner surface for a day during which the room is maintained at (293K) while the temperature of the outdoor is (263K) is equal to * 13.932 C 139.32 C 17.932 C 139.32 oC Request edit accessarrow_forwardThis is a Physical problem, please reply as soon as posible. Thanks.arrow_forwardUntitled Question QI/ consider a (0.8m) high and (1.5m) wide double pane widow consisting of two (4mm) thick layers of glass (k=0.78W/m.°C) separated by a (10mm) wide stagnant air space (k=0.026W/m.°C). ). Take the (hi) on the inner surface = 10W/m².°C and (ho) on the outer surface = 40W/ m². °C. Determine * The steady rate of heat transfer through this double pane window is equal 69.28W 6528W 6.028W 692.8W O The temperature of its inner surface for a day during which the room is * maintained at (293K) while the temperature of the outdoor is (263K) is equal to 13.932 C O 139.32 C O 17.932 C O 139.32 oc Oarrow_forward
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