Solution manual for Fundamentals of Heat and Mass Transfer 8th Edition by Bergman Latest Update!! Graded A+

Solution manual for Fundamentals of Heat and Mass Transfer 8th
Edition by Bergman Latest 2025-2026 Update!! Graded A+

,TABLE OF CONTENTS
1. Introduction

2. Introduction to Conduction

3. One-Dimensional, Steady-State Conduction

4. Two-Dimensional, Steady-State Conduction

5. Transient Conduction

6. Introduction to Convection

7. External Flow

8. Internal Flow

9. Free Convection

10. Boiling and Condensation

11. Heat Exchangers

12. Radiation: Processes and Properties

13. Radiation Exchange Between Surfaces

14. Diffusion Mass Transfer

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PROBLEM 1.1

KNOWN: Thermal conductivity, thickness and temperature difference across a sheet of rigid
extruded insulation.

FIND: (a) The heat flux through a 2 m 2 m sheet of the insulation, and (b) The heat rate
through the sheet.

SCHEMATIC:

A = 4 m2


W
k = 0.029
mK qcond

T1 – T2 = 10˚C


T1 T2


L = 20 mm
x

ASSUMPTIONS: (1) One-dimensional conduction in the x-direction, (2) Steady-state
conditions, (3) Constant properties.

ANALYSIS: From Equation 1.2 the heat flux is
dT
q = -k T1 - T2
x =k
dx L

Solving,
W
= 0.029 10 K
q"x 

× 




m K 0.02 m

W
qx = 14.5 <
2
m
The heat rate is
W
q = qA = 14.5 × 4 m2 = 58 W <
x x
m2
COMMENTS: (1) Be sure to keep in mind the important distinction between the heat flux
(W/m2) and the heat rate (W). (2) The direction of heat flow is from hot to cold. (3) Note that
a temperature difference may be expressed in kelvins or degrees Celsius.