Consider two finned surfaces that are identical except that the fins on the first surface are formed by casting or extrusion, whereas they are attached to the second surface afterwards by welding or tight fitting. For which case do you think the fins will provide greater enhancement in heat transfer? Explain.

Consider two finned surfaces that are identical except that the fins on the first surface are formed by casting or extrusion, whereas they are attached to the second surface afterwards by welding or tight fitting. For which case do you think the fins will provide greater enhancement in heat transfer? Explain.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter16: Temperature And The Kinetic Theory Of Gases

Section16.4: Macroscopic Description Of An Ideal Gas

Problem 16.3QQ: A common material for cushioning objects in packages is made by trapping bubbles of air between...

See similar textbooks

Similar questions

A common material for cushioning objects in packages is made by trapping bubbles of air between sheets of plastic. Is this material more effective at keeping the contents of the package from moving around inside the package on (a) a hot day, (b) a cold day, or (c) either hot or cold days?
Some environmentally conscious people build their homes in the shape of a dome. Why is less heat lost in a dome-shaped dwelling than in a conventional dwelling with the same volume?
When is heat transfer through a fluid conduction and when is it convection? For what case is the rate of heat transfer higher? How does the convection heat transfer coefficient differ from the thermal conductivity of a fluid?
Shown below is a cut-away drawing of a thermos bottle (also known as a Dewar flask), which is a device designed specifically to slow down all forms of heat transfer. Explain the functions of the various parts, such as the vacuum, the silvering of the walls, the thin-walled long glass neck, the rubber support, the air layer, and the stopper.
The figure shows a cut-away drawing of a thermos bottle (also known as a Dewar flask), which is a device designed specifically to slow down all forms of heat transfer. Explain the functions of the various parts, such as the vacuum, the silvering of the walls, the thin-walled long glass neck, the rubber support, the air layer, and the stopper.
Consider steady one-dimensional heat transfer through a plane wall exposed to convection from both sides to environments at known temperatures T`1 and T`2 with known heat transfer coefficients h1 and h2. Once the rate of heat transfer has been evaluated, explain how you would determine the temperature of each surface.
On a hot dry day, evaporation from a lake has just enough heat transfer to balance the 1.00kW/m2 of incoming heat from the Sun. What mass of water evaporates in 1.00 h from each square meter? Explicitly show how you follow the steps in the Problem-Solving Strategies for the Effects of Heat Transfer.
On a hot day, the temperature of an 80,000-L swimming pool increases by 1.50ºC1.50ºC. What is the net heat transfer during this heating? Ignore any complications, such as loss of water by evaporation.
Write down the expressions for the physical laws that govern each mode of heat transfer, and identify the variables involved in each relation.
Consider a surface of area A at which the convection and radiation heat transfer coefficients are hconv and hrad, respectively. Explain how you would determine (a) the single equivalent heat transfer coefficient and (b) the equivalent thermal resistance. Assume the medium and the surrounding surfaces are at the same temperature.
The markings on an aluminum ruler and a brass ruler begin at the left end; when the rulers are at 0.00 ∘C∘C, they are perfectly aligned. Part A) How far apart will the 22.0 cmcm marks be on the two rulers at 101.3 ∘C∘C if the left-hand ends are kept precisely aligned? d= --------- cm
Compare the rate of heat transfer by radiation for two objects, the first one has the temperature??1 = 20ºC and the second is kept at the temperature ??2 = 40ºC. Suppose, that they are made of identicalmaterial (e1=e2) and have the same area participating in radiation (Ar1=Ar2). The surrounding temperature?? = 25ºC.