CHEG335: Heat Transfer
Lecture #18
Chapter 6: Introduction to Convection
Spring 2015
Thursday, March 5th, 2015
Dr. Saeed Alhassan
Lecture Objectives
Student should be able to:
Understand the similarity concept and how it can be
applied
Understand dimen

CHEG335: Heat Transfer
Lecture #25
Chapter 11: Heat Exchangers
Spring 2015
Sunday, April 12th, 2015
Dr. Saeed Alhassan
Heat Exchanger Types
Heat exchangers are typically classified according to flow arrangement and type of
construction.
Heat Exchanger Typ

CHEG335: Heat Transfer
Lecture #23
Chapter 8: Internal Flow
Spring 2015
Tuesday, March 17th, 2015
Dr. Saeed Alhassan
Hydrodynamic Considerations
An internal flow, such as flow in a pipe, is one for which the fluid is confined by a
surface
onset
Hydrodynam

CHEG335: Heat Transfer
Lecture #29
Chapter 13: Radiation Exchange Between
Surfaces
Spring 2015
Thursday, April 23rd, 2015
Dr. Saeed Alhassan
Irradiation by Real Surfaces
Spectral irradiation from a real surface include reflection, absorption and transmiss

CHEG335: Heat Transfer
Lecture #21
Chapter 7: External Flow
Spring 2015
Thursday, March 12th, 2015
Dr. Saeed Alhassan
The Flat Plate in Parallel Flow
We showed that the hydrodynamic solution to the flow over flat plate is solved
independently of energy an

CHEG335: Heat Transfer
Lecture #17
Chapter 6: Introduction to Convection
Spring 2015
Tuesday , March 3rd, 2015
Dr. Saeed Alhassan
Lecture Objectives
Student should be able to:
Understand how to carry out a generalized balance on
differential volume that

CHEG335: Heat Transfer
Lecture #19
Chapter 6: Introduction to Convection
Spring 2015
Sunday, March 8th, 2015
Dr. Saeed Alhassan
Lecture Objectives
Student should be able to:
Understand the physical interpretation of dimensionless
numbers
Understand how

CHEG335: Heat Transfer
Lecture #28
Chapter 12: Radiation Processes and
Properties
Spring 2015
Tuesday, April 21st, 2015
Dr. Saeed Alhassan
Blackbody Radiation
1. A blackbody absorbs all incident radiation, regardless of wavelength and direction.
2. For a

CHEG335: Heat Transfer
Lecture #20
Chapter 7: External Flow
Spring 2015
Tuesday, March 10th, 2015
Dr. Saeed Alhassan
Lecture Objectives
Student should be able to:
Understand the possible ways to solve convection problem
with external flow
Understand th

CHEG335: Heat Transfer
Lecture #16
Chapter 6: Introduction to Convection
Spring 2015
Sunday, March 1st , 2015
Dr. Saeed Alhassan
Lecture Objectives
Student should be able to:
Understand that heat transfer coefficient in boundary layer
problems is not co

CHEG335: Heat Transfer
Lecture #30
Chapter 13: Radiation Exchange Between
Surfaces
Spring 2015
Sunday , April 26th , 2015
Dr. Saeed Alhassan
The View Factor
Also known as the configuration or shape factor (Fij) is defined as the fraction of the
radiation

CHEG335: Heat Transfer
Lecture #26
Chapter 11: Heat Exchangers
Spring 2015
Tuesday, April 14th, 2015
Dr. Saeed Alhassan
Heat Exchanger Analysis
The LMTD method may be applied to design problems for which the fluid flow rates
and inlet temperatures, as wel

CHEG335: Heat Transfer
Lecture #22
Chapter 7: External Flow
Spring 2015
Sunday, March 15th, 2015
Dr. Saeed Alhassan
The Cylinder in Cross Flow
Other common external flow involves fluid motion normal to the axis of a circular
Cylinder or group of cylinder

CHEG335: Heat Transfer
Lecture #24
Chapter 8: Internal Flow
Spring 2015
Thursday, March 19th, 2015
Dr. Saeed Alhassan
Laminar Flow in Circular Tubes
Solution to Nusselt number fro laminar flow of an incompressible, constant property
fluid in the fully dev

CHEG335: Heat Transfer
Lecture #27
Chapter 12: Radiation Processes and
Properties
Spring 2015
Sunday, April 19th, 2015
Dr. Saeed Alhassan
Fundamental Concepts
Heat transfer by thermal radiation requires no matter
Radiation cooling is associated with a red