Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Why are finned surfaces frequently used in practice? Why are the finned surfaces referred to as heat sinks in the electronics industry?

Short Answer

Expert verified
Answer: Finned surfaces are frequently used in practice because of their effectiveness in improving heat transfer by increasing the overall surface area, allowing for faster heat dissipation. They are referred to as heat sinks in the electronics industry because of their critical role in maintaining optimal temperatures for the proper functioning and longevity of electronic components by effectively "sinking" the heat away from the components and into the surrounding medium.

Step by step solution

01

Understanding Finned Surfaces

A finned surface is a surface with extended protrusions, called fins, designed to enhance or improve heat transfer by increasing the overall surface area. This allows for faster heat dissipation, owing to the larger contact area with the surrounding medium, such as air or water.
02

Application of Finned Surfaces in Practice

Finned surfaces are frequently used in practice because of their ability to improve heat transfer. By increasing the surface area, more heat can be transferred from a warm object to a cooler medium, allowing the object to cool down more quickly. This is essential in industries where equipment or components may generate a lot of heat during operation, and efficient heat dissipation is crucial for maintaining performance and preventing damage.
03

The Role of Finned Surfaces in the Electronics Industry

In the electronics industry, heat is generated due to the energy conversion that takes place within electronic devices and components. Excess heat can cause these components to overheat, leading to reduced performance, shorter life spans, and even failures. Therefore, it is important to keep electronic devices cool, which is where finned surfaces come in.
04

Finned Surfaces as Heat Sinks

The term "heat sinks" refers to the role finned surfaces play in maintaining optimal temperatures within electronic systems. They effectively "sink" the heat away from the components and into the surrounding medium by increasing the contact surface area. Finned surfaces are commonly used in the production of heat sinks for electronic devices like CPUs, power supplies, and other components that require efficient heat management. In conclusion, finned surfaces are frequently used in practice because of their effectiveness in improving heat transfer by increasing the overall surface area. They are referred to as heat sinks in the electronics industry because of their critical role in maintaining optimal temperatures for the proper functioning and longevity of electronic components.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A \(0.2-\mathrm{m} \times 0.2-\mathrm{m}\) street sign surface has an absorptivity of \(0.6\) and an emissivity of \(0.7\). Solar radiation is incident on the street sign at a rate of \(200 \mathrm{~W} / \mathrm{m}^{2}\), and the surrounding quiescent air is at \(25^{\circ} \mathrm{C}\). Determine the surface temperature of the street sign. Assume the film temperature is $30^{\circ} \mathrm{C}$.

A 12-cm-diameter and 15-m-long cylinder with a surface temperature of \(10^{\circ} \mathrm{C}\) is placed horizontally in air at $40^{\circ} \mathrm{C}$. Calculate the steady rate of heat transfer for the cases of (a) free-stream air velocity of \(10 \mathrm{~m} / \mathrm{s}\) due to normal winds and (b) no winds and thus a free-stream velocity of zero.

During a plant visit, it was observed that a \(1.5\)-m-high and \(1-\mathrm{m}\)-wide section of the vertical front section of a natural gas furnace wall was too hot to touch. The temperature measurements on the surface revealed that the average temperature of the exposed hot surface was \(110^{\circ} \mathrm{C}\), while the temperature of the surrounding air was \(25^{\circ} \mathrm{C}\). The surface appeared to be oxidized, and its emissivity can be taken to be \(0.7\). Taking the temperature of the surrounding surfaces to be \(25^{\circ} \mathrm{C}\) also, determine the rate of heat loss from this furnace. The furnace has an efficiency of 79 percent, and the plant pays \(\$ 1.20\) per therm of natural gas. If the plant operates \(10 \mathrm{~h}\) a day, 310 days a year, and thus \(3100 \mathrm{~h}\) a year, determine the annual cost of the heat loss from this vertical hot surface on the front section of the furnace wall.

Consider a double-pane window consisting of two glass sheets separated by a \(1-\mathrm{cm}\)-wide airspace. Someone suggests inserting a thin vinyl sheet between the two glass sheets to form two \(0.5\)-cm-wide compartments in the window in order to reduce natural convection heat transfer through the window. From a heat transfer point of view, would you be in favor of this idea to reduce heat losses through the window?

A vertical \(1.5-\mathrm{m}\)-high and \(3.0\)-m-wide enclosure consists of two surfaces separated by a \(0.4-\mathrm{m}\) air gap at atmospheric pressure. If the surface temperatures across the air gap are measured to be $280 \mathrm{~K}\( and \)336 \mathrm{~K}\( and the surface emissivities to be \)0.15$ and \(0.90\), determine the fraction of heat transferred through the enclosure by radiation. Arswer: \(0.30\)

See all solutions

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free