Heat Transfer
Heat transfer lectures by Professor Josua Meyer (2014). Topics covered in the lectures include: transient or unsteady heat conduction, convection heat transfer, external and internal forced convection, heat exchangers, thermal radiation including atmospheric and solar radiation. The lectures are based on the textbooks of White (8th ed) and Cengel and Ghajar (4th ed) and were presented as part of a heat transfer class to the fourth year students of the Department of Mechanical and Aeronautical Engineering, University of Pretoria.
| Lecture 10 - Transient Heat Transfer: Heisler Charts and Semi-infinite Solids |
This lecture continues with unsteady/transient heat conduction, specifically in large plane walls, long cylinders and spheres and starts with semi-infinite solids. This lecture continues with the previous lecture on how temperature varies in a beef carcass (Problem 4.59 in the book of Cengel and Ghajar). The focus this time is on using the Heisler charts to solve the same beef carcass problem. The lecture then continues with section 4.3 in the text book on semi-infinite solids. Defining a semi-infinite solid and showing how the equation is derived for the case of a constant surface temperature.
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