| Lectures and exercises |
hours |
| Topics |
Specific contents |
|
| Heat transfer modes. |
Conduction, convection and radiation. Thermal conductivity. Insulating materials. |
4
|
| Conduction rate equations. |
Governing equations for steady-state and transient conduction. Boundary and initial conditions. |
3
|
| Steady-state conduction. |
Electrical analogy. One-dimensional plane and cylindrical geometries. Extended surfaces. Thermal energy generation. Shape factors. |
10
|
| Transient conduction. |
The lumped capacity model. One-dimensional plane and radial systems with convection. The semi-infinite solid with constant and time-periodic surface temperatures. Multidimensional effects. |
7
|
| Convection transfer equations. |
Velocity and thermal boundary layers. Continuity, momentum and energy equations for forced convection. Similarity parameters: Nusselt, Reynolds and Prandtl number. The effects of turbulence. The Reynolds analogy. |
5
|
| Forced convection. |
Determination of friction factors and convection coefficients for: non-recirculating and recirculating external flows, and for internal flows in tubes and channels. |
7
|
| Free convection. |
Governing equations for laminar free convection from a vertical plate. Similarity considerations: Grashof and Rayleigh numbers. Determination of convection coefficients. Combined free and forced convection. |
5
|
| Seminar. |
Examples of numerical solution of steady-state and transient heat transfer problems. |
2
|
| Heat exchangers. |
Heat exchangers types, energy balances and temperature behaviours. Log-mean temperature difference and correction factors for multipass and cross-flow exchangers. Effectiveness. |
6
|
| Radiation. |
Intensity, emissive power, irradiation and radiosity. Blackbody radiation. Characterization of real surfaces. |
5
|
| Radiation exchange. |
View factors. Radiation exchange between black surfaces, and between grey surfaces in an enclosure. Electrical analogy. Radiation exchange in a participating medium. |
6
|
| Total hours for lectures and exercises |
60 |
| for exercises only |
16 |
|
Further educational activities
|
hours
|
| Labs |
0 |
| Tutorials / Seminars |
0 |
| Workshops |
0 |
| Guided tours |
0 |
| |
0 |
| Total hours for further educational activities |
0 |
| Total hours |
60
|