7 MBBY uniVEI'SiW rarnpuses are heated using strum that is sent to different buildings in pipes. Steam with
a tempeamm 0' 4011'5 8mi 3 heat transfer r FJiffif non: of 50 W/mK ows through a stainless
Solutions to Exam 1 Review Problems from Cengel and Ghajar solutions manual except for the oven
problem, which is from Incropera and DeWitts Intro to Heat Transfer text
2-137 A large plane wall is sub
Heat and Mass Transfer: Fundamentals & Applications
Fourth Edition
Yunus A. Cengel, Afshin J. Ghajar
McGraw-Hill, 2011
Chapter 4
TRANSIENT HEAT CONDUCTION
AbdulMoizDota
Dept.FoodEngineering
University
IntroductiontoConvection
ME 114
Flowaroundacylinder
http:/www.featflow.de/album/circles.html
MergerofPipeFlows
http:/www.featflow.de/album/pipes.html
InstabilityofaJet
From An Album of Fluid Motion Va
Convection from
Cylinders/Spheres
ME 114
All fluid dynamic pictures from Van Dykes
Album of Fluid Motion, Parabolic Press
Flow around Cylinder, Re = 1.5
This is exceptionally slow flow that wed never
Radiative Properties
ME 114 Heat Transfer
Most figures from Cengel and Boles, Heat and Mass
Transfer, 4th ed., McGraw Hill
Radiative Properties
Total: integrated over all
total
wavelengths
hemispheric
San Jos State University
Mechanical Engineering Department
ME 114 Heat Transfer, Section 2, Spring 2017
Instructor:
Nicole Okamoto
Office Location:
Eng 310H
Telephone:
(408) 924-4054
Email:
Nicole.Oka
Heat and Mass Transfer: Fundamentals & Applications
Yunus A. Cengel, Afshin J. Ghajar
Chapter 2 & 3
STEADY HEAT CONDUCTION
SOLUTION OF STEADY ONE-DIMENSIONAL HEAT
CONDUCTION PROBLEMS
In this section w
Convection from
Cylinders/Spheres
ME 114
All fluid dynamic pictures from Van Dykes
Album of Fluid Motion, Parabolic Press
Flow around Cylinder, Re = 1.5
This is exceptionally slow flow that wed never
HeatExchangerTypes
ME 114 Heat Transfer
PurposeofHeatExchangers
Heat exchangers are used to transfer heat
from one fluid to another.
Fluid-to-fluid
Fluid-to-gas
Gas-to-gas
Fluid may be single phase or
Boundary and Initial
Conditions
Application to the Heat
Conduction Equation
Nicole Okamoto, ME 114
Overview
We need additional information to solve these
differential equations.
Boundary conditions -
Transient Analysis: Semi-infinite
Solids and Multidimensional
Systems
ME 114
TRANSIENT HEAT CONDUCTION IN SEMIINFINITE SOLIDS
Semi-infinite solid: An idealized
body that has a single plane surface
and
Common 2-D, 3-D,
Configurations
ME 114 Heat Transfer
Common Configurations
Many 2-D or 2-D heat transfer problems are
solved using numerical software.
Simple solutions can be found for common
configur
Effect of Biot number on temperature distribution
Incropera & DeWitt, Intro to Heat Transfer
What do we do if Bi isnt much less than 1?
TRANSIENT HEAT CONDUCTION IN LARGE PLANE
WALLS, LONG CYLINDERS,
Introduction to Thermal
Radiation
Figures except for the McDonnell Douglas figures come from Incorpera &
DeWitt, Introduction to Heat and Mass Transfer or Cengel, Heat Transfer:
A Practical Approach
T
FLAT PLATE FLOW
Ref: Incropera & DeWitt, Fundamentals of
Heat and Mass Transfer, 3rd ed.
Nusselt Number Correlations
Remember from Ch. 6 that Nu=f(Re,Pr)
In general, Nu=CRemPrn
(1)
C, m, and n vary
Heat Conduction
ME 114 Nicole Okamoto
Figures from Cengel and Ghajar, Heat and Mass
Transfer, 4th ed., McGraw Hill
Conduction Overview
We categorize heat conduction as
Steady
temperature a function
FLAT PLATE FLOW
Ref: Incropera & DeWitt, Fundamentals of
Heat and Mass Transfer, 3rd ed.
Nusselt Number Correlations
Remember from Ch. 6 that Nu=f(Re,Pr)
In general, Nu=CRemPrn
(1)
C, m, and n vary
Saturated steam at 55°C is condensed in a shellandtuoe heat exchanger with onesheli pass and
two tube passes consisting of 130 brass tubes, each with a iength per pass of 2 In. The tubes
have inner an
Exam 1 Review Problems
These are a few problems that Ive pulled out from your textbook (and one from a different
textbook) that would be good to do for review. Exam problems will not necessarily all r
Heat and Mass Transfer: Fundamentals & Applications
Fourth Edition
Yunus A. Cengel, Afshin J. Ghajar
McGraw-Hill, 2011
Chapter 13
RADIATION HEAT TRANSFER
AbdulMoizDota
Dept.FoodEngineering
Universityo
Heat and Mass Transfer: Fundamentals & Applications
Fourth Edition
Yunus A. Cengel, Afshin J. Ghajar
McGraw-Hill, 2011
Chapter 14
MASS TRANSFER
AbdulmoizDota
Dept.FoodEngineering
UniversityofAgricultu
Heat and Mass Transfer: Fundamentals & Applications
Fourth Edition
Yunus A. Cengel, Afshin J. Ghajar
McGraw-Hill, 2011
Chapter 10
BOILING AND CONDENSATION
AbdulmoizDota
Dept.FoodEngineering
University