Fundamentals of Heat and Mass Transfer
Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470917855
Author: Bergman, Theodore L./
Publisher: John Wiley & Sons Inc
bartleby

Videos

Textbook Question
Book Icon
Chapter 10, Problem 10.27P

A small copper sphere, initially at a uniform, elevated temperature T ( 0 ) = T i , is suddenly immersed in a large fluid bath maintained at T sat . The initial temperature of the sphere exceeds the Leidenfrost point corresponding to the temperature T D of Figure 10.4.

(a) Sketch the variation of the average sphere temperature, T ¯ ( t ) , with time during the quenching process. Indicate on this sketch the temperatures T i , T D , and T sat as well as the regimes of film, transition, and nucleate boiling and the regime Of single-phase convection. Identify key features of the temperature history.

(b) At what time(s) in this cooling process do you expect the surface temperature of the sphere to deviate most from its center temperature? Explain your answer.

Blurred answer
Students have asked these similar questions
A 15 lb. block of brass with a specific heat of 0.089 is heated to 189°C and the immersed in 5 gal. of water at 66°C. What is the final temperature of the brass and water? Assume there is no heat loss.
2. Cooling of a Sheet of Materials Consider a thin sheet of solid material with a large surface. One side of the material at r = O is insulated, so that the heat flux there is zero, while the other side at (dimensionless) a = 1 is kept at (dimensionless temperature) of 0 = 0. Initially, the temperature distribition in the thin sheet is f(x) = (1-x2)/2. We wish to determine the unsteady-state temperature distribution within the sheet. (a) Write dowm the governing equation and the initial and boundary conditions for the (dimensionless) temperature 0, i.e., one-dimensional unsteady-state conduction described in class. (b) Derive the eigenvalues and eigenfunctions for the governing equation. (c) Derive the complete solution of the problem.
Must solve all questions.

Chapter 10 Solutions

Fundamentals of Heat and Mass Transfer

Knowledge Booster
Background pattern image
Mechanical Engineering
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Principles of Heat Transfer (Activate Learning wi...
Mechanical Engineering
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Cengage Learning
Heat Transfer – Conduction, Convection and Radiation; Author: NG Science;https://www.youtube.com/watch?v=Me60Ti0E_rY;License: Standard youtube license