Heat Transfer

Video Lectures

Displaying all 66 video lectures.
Lecture 1
Heat Transfer Basics
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Heat Transfer Basics
Explains the types of heat transfer and the terms associated with the governing equations.
Lecture 2
Introduction to Heat Transfer - Potato Example
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Introduction to Heat Transfer - Potato Example
An experiment is discussed with a student to demonstrate the main concepts of heat transfer.
Lecture 3
Heat Transfer Parameters and Units
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Heat Transfer Parameters and Units
Discusses the most common heat transfer parameters and associated units.
Lecture 4
Heat Flux: Temperature Distribution
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Heat Flux: Temperature Distribution
Given the temperature distribution for a one-dimensional wall, determine the heat flux, the rate of storage, and the heat transfer coefficient.
Lecture 5
Conduction Equation Derivation
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Conduction Equation Derivation
Derives the equation for conductive heat transfer through a plane wall at steady-state conditions.
Lecture 6
Heat Equation Derivation
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Heat Equation Derivation
Derives the heat equation using an energy balance on a differential control volume.
Lecture 7
Heat Equation Derivation: Cylindrical Coordinates
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Heat Equation Derivation: Cylindrical Coordinates
Derives the heat diffusion equation in cylindrical coordinates.
Lecture 8
Boundary Conditions
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Boundary Conditions
Compares various boundary conditions for a steady-state, one-dimensional system.
Lecture 9
Thermal Circuits Introduction
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Thermal Circuits Introduction
Introduces the concept of thermal circuits to solve for heat transfer through a plane wall.
Lecture 10
Thermal Circuits: Temperatures in a Composite Wall
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Thermal Circuits: Temperatures in a Composite Wall
Calculates the temperatures in a composite wall using thermal circuits.
Lecture 11
Composite Wall: Maximum Temperature
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Composite Wall: Maximum Temperature
Determines the maximum temperature within a composite wall given information about composite materials and heat flux.
Lecture 12
Temperature Distribution for a Cylinder
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Temperature Distribution for a Cylinder
Simplifies the heat equation for conduction in a hollow cylinder and solves for the temperature distribution.
Lecture 13
Rate of Heat Generation
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Rate of Heat Generation
Determines the rate of heat generation for a wall.
Lecture 14
Uniform Heat Generation: Maximum Temperature
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Uniform Heat Generation: Maximum Temperature
Calculates the maximum temperature for a plane wall with uniform heat generation.
Lecture 15
Heat Loss from a Cylindrical Pin Fin
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Heat Loss from a Cylindrical Pin Fin
Calculates the heat transfer coefficient and rate of heat transfer for a cylindrical pin fin.
Lecture 16
Heat Loss from a Rectangular Fin
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Heat Loss from a Rectangular Fin
Models heat loss from a rectangular fin. Assumes properties similar to fins used in microprocessors.
Lecture 17
Maximum Temperature for a Rectangular Fin
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Maximum Temperature for a Rectangular Fin
Calculates the maximum temperature for an isothermal microprocessor chip soldered to a heat sink.
Lecture 18
Methods for Solving Transient Conduction Problems
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Methods for Solving Transient Conduction Problems
Compares lumped capacitance to an analytical solution for a gold sphere dropped into a water bath.
Lecture 19
Lumped Capacitance Introduction
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Lumped Capacitance Introduction
Explains the lumped capacitance model for transient conduction and derives its governing equation.
Lecture 20
Lumped Capacitance: Temperature of a Sphere
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Lumped Capacitance: Temperature of a Sphere
Uses the lumped capacitance assumption to find the temperature at the center of a sphere.
Lecture 21
Transient Conduction in a Sphere (Part I)
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Transient Conduction in a Sphere (Part I)
Calculates the time to cool a sphere placed in a water bath. The problem solving approach is determined by calculating the Biot number.
Lecture 22
Transient Conduction in a Sphere (Part II)
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Transient Conduction in a Sphere (Part II)
Calculates the time to cool a sphere placed in a water bath using an analytical approach.
Lecture 23
Transient Conduction: One-Term Approximation
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Transient Conduction: One-Term Approximation
Models the temperature of a sphere suddenly immersed in a hot bath using the one-term approximation method.
Lecture 24
Modeling Heat Transfer along a Semi-Infinite Medium
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Modeling Heat Transfer along a Semi-Infinite Medium
Determines the temperature in a slab modeled as a semi-infinite solid.
Lecture 25
Solving Convection Problems
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Solving Convection Problems
Outlines the procedure to solve convection problems.
Lecture 26
Flow over a Flat Plate
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Flow over a Flat Plate
Determines the heat transfer coefficient for laminar flow over a flat plate and the surface temperature of the plate.
Lecture 27
Laminar Flow: Flat Plate Surface Temperature
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Laminar Flow: Flat Plate Surface Temperature
Solves for the surface temperature of an isothermal flat plate using a laminar flow correlation.
Lecture 28
Solar Cell (Part I): Heat Transfer Coefficient
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Solar Cell (Part I): Heat Transfer Coefficient
Calculates the convective heat transfer coefficient for a solar cell using the appropriate correlation.
Lecture 29
Solar Cell (Part II): Surface Temperature
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Solar Cell (Part II): Surface Temperature
Calculates the surface temperature for a solar cell using the thermal circuit method.
Lecture 30
Heat Transfer Rate: Tube Bank
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Heat Transfer Rate: Tube Bank
Calculates the total heat transfer rate for a bank of tubes used to heat air.
Lecture 31
Rod Center-line Temperature
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Rod Center-line Temperature
Determines the center-line temperature of a cylindrical rod heated by convection.
Lecture 32
Introduction to Blasius Solutions
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Introduction to Blasius Solutions
Introduces Blasius solutions to solve steady-state, two-dimensional boundary layer problems for a semi-infinite plate.
Lecture 33
Blasius Solution for Boundary Layer Thickness
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Blasius Solution for Boundary Layer Thickness
Uses flat plate laminar boundary layer functions to solve for boundary layer thickness.
Lecture 34
Shear Stress at a Wall: Blasius Solutions
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Shear Stress at a Wall: Blasius Solutions
Uses the Blasius solutions to find the shear stress at a wall as a function of plate length.
Lecture 35
Blasius Solution for the y-Component of Velocity
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Blasius Solution for the y-Component of Velocity
Uses the Blasius solutions to develop an expression for the y-component of velocity at the edge of a boundary layer.
Lecture 36
y-Component of Velocity at a Boundary Layer
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y-Component of Velocity at a Boundary Layer
Shows how to find the y-component of velocity at the edge of a boundary layer at any point along the length of a flat plate.
Lecture 37
Outlet Mean Temperature
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Outlet Mean Temperature
Calculates the outlet mean temperature for internal flow through a tube.
Lecture 38
Heat Transfer Rate: Cross-Section Orientation
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Heat Transfer Rate: Cross-Section Orientation
Examines the dependence of the heat transfer rate on the physical orientation of a rectangular cross-section.
Lecture 39
Nucleate Boiling Example
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Nucleate Boiling Example
Determines the rate of vapor production for saturated water during nucleate boiling.
Lecture 40
Counter-Flow Heat Exchanger: Outlet Temperature (Bio)
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Counter-Flow Heat Exchanger: Outlet Temperature (Bio)
Determines the outlet temperature for a concentric tube, counter-current heat exchanger used to cool blood during open heart surgery.
Lecture 41
Heat Exchanger: Mass Flow Rate
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Heat Exchanger: Mass Flow Rate
Calculates the mass flow rate of cooling water in a concentric, counter-current heat exchanger.
Lecture 42
Sizing a Heat Exchanger: Parallel Flow
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Sizing a Heat Exchanger: Parallel Flow
Finds the length of a concentric, parallel flow heat exchanger using an overall heat transfer coefficient and the log mean temperature.
Lecture 43
Sizing a Heat Exchanger: Counter-Flow
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Sizing a Heat Exchanger: Counter-Flow
Calculates the length of a concentric counter-flow heat exchanger using the same parameters as in 'Sizing a Heat Exchanger: Parallel Flow.' Describes how counter-flow is different from parallel flow.
Lecture 44
Excel Solver Introduction
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Excel Solver Introduction
Describes how to use the solver function in Excel 2010.
Lecture 45
Laminar, Fully-Developed Internal Flow Through a Pipe
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Laminar, Fully-Developed Internal Flow Through a Pipe
Uses a correlation to calculate the heat transfer coefficient and the outlet temperature of a laminar, fully-developed fluid flowing through a pipe with constant surface temperature.
Lecture 46
NTU Effectiveness Method
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NTU Effectiveness Method
Introduces the NTU effectiveness method to analyze a heat exchanger.
Lecture 47
NTU Effectiveness: Counter-Flow Heat Exchanger
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NTU Effectiveness: Counter-Flow Heat Exchanger
Uses the NTU effectiveness method to find the overall heat transfer coefficient for a counter-flow, concentric heat exchanger.
Lecture 48
Log Mean Temperature Difference
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Log Mean Temperature Difference
Explains how to calculate the log mean temperature difference for a heat exchanger.
Lecture 49
How to Calculate Heat Duty
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How to Calculate Heat Duty
Introduces heat duty and calculates it for a stream of water heated from 25C to 140C at 30 psi.
Lecture 50
Estimates for Heat Transfer Coefficients
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Estimates for Heat Transfer Coefficients
Provides estimates for heat transfer coefficients for different scenarios.
Lecture 51
Local and Average Heat Transfer Coefficients
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Local and Average Heat Transfer Coefficients
Compares local and average heat transfer coefficients.
Lecture 52
Internal Flow with Constant Surface Temperature
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Internal Flow with Constant Surface Temperature
Calculates the mass flow rate of fluid through a pipe with constant surface temperature.
Lecture 53
Contact Resistance
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Contact Resistance
Uses thermal resistances to examine surface contact resistances.
Lecture 54
Contact Resistance Example
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Contact Resistance Example
Calculates the contact resistance for a composite wall using the overall heat transfer coefficient.
Lecture 55
Film Pool Boiling
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Film Pool Boiling
Describes the regime of film pool boiling and uses an example to illustrate how to determine the heat transfer rate.
Lecture 56
Nucleate Pool Boiling
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Nucleate Pool Boiling
The heat flux and convective heat transfer coefficient are determined for a copper pipe with water undergoing nucleate pool boiling.
Lecture 57
Nucleate Pool Boiling: Unit Conversion
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Nucleate Pool Boiling: Unit Conversion
Gives a detailed explanation of the unit conversions for the Nucleate Pool Boiling screencast.
Lecture 58
Overall Heat Transfer Coefficient Rectangular Coordinates
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Overall Heat Transfer Coefficient Rectangular Coordinates
Explains how to calculate the overall heat transfer coefficient for a system with conduction and convection.
Lecture 59
View Factors
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View Factors
Defines view factors and shows two examples of how to calculate them.
Lecture 60
Surface Temperature for a Cylindrical Pipe
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Surface Temperature for a Cylindrical Pipe
The overall heat transfer coefficient for a radial system is used to find the surface temperature of a pipe.
Lecture 61
Internal Flow with Constant Surface Heat Flux
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Internal Flow with Constant Surface Heat Flux
Calculates the mass flow rate of a fluid through a pipe with constant surface heat flux.
Lecture 62
Net Radiative Heat Transfer Rate from a Surface
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Net Radiative Heat Transfer Rate from a Surface
Defines opaque, diffuse and gray surfaces and discusses how they differ from blackbodies.
Lecture 63
Radiation Exchange Between Surfaces
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Radiation Exchange Between Surfaces
Demonstrates how to calculate radiation exchange between surfaces in an enclosure.
Lecture 64
Temperature of a Radiation Shield
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Temperature of a Radiation Shield
Calculates the temperature of a radiation shield, knowing the heat flux.
Lecture 65
Heat Generation in a Pipe
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Heat Generation in a Pipe
Calculates the heat generation needed to heat water in a thick-walled pipe.
Lecture 66
Properties of Radiative Heat Transfer
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Properties of Radiative Heat Transfer
Explanation of the process of radiation.