Solution Found!

Introduction to Heat Transfer | 6th Edition | ISBN: 9780470501962 | Authors: Theodore L. Bergman
Change Question

Consider a thin electrical heater attached to a plate and

Chapter , Problem 5.1

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Consider a thin electrical heater attached to a plate and backed by insulation. Initially, the heater and plate are at the temperature of the ambient air, T. Suddenly, the power to the heater is activated, yielding a constant heat flux at the inner surface of the plate. (a) Sketch and label, on T x coordinates, the temperature distributions: initial, steady-state, and at two intermediate times. (b) Sketch the heat flux at the outer surface as a function of time.

Questions & Answers

QUESTION:

Consider a thin electrical heater attached to a plate and backed by insulation. Initially, the heater and plate are at the temperature of the ambient air, T. Suddenly, the power to the heater is activated, yielding a constant heat flux at the inner surface of the plate. (a) Sketch and label, on T x coordinates, the temperature distributions: initial, steady-state, and at two intermediate times. (b) Sketch the heat flux at the outer surface as a function of time.

ANSWER:

Step 1 of 3

a)

Temperature distribution for the initial state can be drawn using common logic, if the heater and the plate are initially at the ambient temperature , their temperatures will stay the same for the first case. In the steady state case, since the time equals infinity, the temperature distribution will be linear since there is only conduction and convection present. Since the intermediate times represent transient conductions the temperature gradient changes over time. Cases are represented below.

Add to cart

Study Tools You Might Need

Chapter: 4 Problem: 4.1-8

Probability and Statistical Inference 9
In a smoking survey among boys between the ages of 12 and 17, \(78 \%\) prefer to date nonsmokers, \(1 \%\) prefer to date smokers, and \(21 \%\) dont care. Suppose seven such boys are selected randomly. Let \(X\) equal the number who prefer to date nonsmokers and \(Y\) equal the number who prefer to

Chapter: 14 Problem: 11

College Physics 1
Problem 11CQ In very humid climates where there are numerous bodies of water, such as in Florida, it is unusual for temperatures to rise above about 35C(95F) . In deserts, however, temperatures can rise far above this. Explain how the evaporation of water helps limit high temperatures in humid clim

Chapter: 11 Problem: 74P

Physics with MasteringPhysics 4
Problem 74P A student on a piano stool rotates freely with an angular speed of 2.95 rev/s. The student holds a 1.25-kg mass in the outstretched arm, 0.759 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two masses, is 5.43 kg -m2, a value that re

Chapter: 9 Problem: 9.79

Chemistry 12
Write Lewis structures for BrF3, ClF5, and IF7. Identify those in which the octet rule is not obeyed.

Chapter: 0 Problem: 1

Biology 8
Vertebrates and tunicates share a. jaws adapted for feeding. b. a high degree of cephalization. c. the formation of structures from the neural crest. d. an endoskeleton that includes a skull. e. a notochord and a dorsal, hollow nerve cord

Chapter: 24 Problem: 16

Anatomy & Physiology 1
Digestion of proteins begins in the ________ where ________ and ________ mix with food to break down protein into ________. a. stomach; amylase; HCl; amino acids b. mouth; pepsin; HCl; fatty acids c. stomach; lipase; HCl; amino acids d. stomach; pepsin; HCl; amino acids

Chapter: 3 Problem: 1

Human Anatomy & Physiology 9
The smallest unit capable of life by itself is (a) the organ, (b) the organelle, (c) the tissue, (d) the cell, (e) the nucleus.

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back