2023
Energy and Mass Transfer
Name: Energy and Mass Transfer
Code: EME10987L
6 ECTS
Duration: 15 weeks/156 hours
Scientific Area:
Mechanical Engineering
Teaching languages: Portuguese
Languages of tutoring support: Portuguese
Regime de Frequência: Presencial
Presentation
Contents related to heat transfer through conduction, convection and radiation are taught and the analogy between mass and heat transfer is presented, which are fundamental to understand this type of process in nature and in engineering equipment and systems.
Sustainable Development Goals
Learning Goals
Know the fundamentals of heat transfer processes by conduction, convection and radiation and know how to use solution methods in practical engineering cases. Know how to establish the fundamental equations and respective boundary conditions in the analysis of practical cases of heat transfer. Know analytical and numerical solution methods. Know the methods of analysis of heat exchangers and heat sinks and how to use them. Know the fundamental concepts of mass transfer and the analogy between heat and mass transfer.
Contents
1. Fundamentals of heat transfer. Conduction, convection and radiation.
2. Heat diffusion equation. Unidimensional heat conduction in steady state regime. Extended surfaces. Multidimensional heat conduction. Transient conduction and in media with internal heat generation. Analytical solutions and numerical methods.
3. Hydrodynamic and thermal boundary layers. Forced convection in internal and external flows in laminar and turbulent regimes. Calculation of the heat transfer coefficient for different geometries. Natural convection.
4. Heat exchangers. Method of the logarithmic mean temperature difference and efficiency method (epsilon-NTU). Analysis of heat sinks.
5. Radiative properties of surfaces. Black bodies and real bodies. Planck's Law. Stefan-Boltzmann and Wien Laws. Kirchhoff's Law. Radiative exchange between surfaces. View factors. Calculation methods.
6. Fundamental concepts of mass transfer and analogy with heat transfer.
2. Heat diffusion equation. Unidimensional heat conduction in steady state regime. Extended surfaces. Multidimensional heat conduction. Transient conduction and in media with internal heat generation. Analytical solutions and numerical methods.
3. Hydrodynamic and thermal boundary layers. Forced convection in internal and external flows in laminar and turbulent regimes. Calculation of the heat transfer coefficient for different geometries. Natural convection.
4. Heat exchangers. Method of the logarithmic mean temperature difference and efficiency method (epsilon-NTU). Analysis of heat sinks.
5. Radiative properties of surfaces. Black bodies and real bodies. Planck's Law. Stefan-Boltzmann and Wien Laws. Kirchhoff's Law. Radiative exchange between surfaces. View factors. Calculation methods.
6. Fundamental concepts of mass transfer and analogy with heat transfer.
Teaching Methods
The course is organized in theoretical and theoretical-practical classes. Theoretical classes are for the presentation of the theory and solution methods. Theoretical-practical classes are for the problem solution, development and use of numerical methods and analysis of experimental results in practical applications and laboratorial tests. There will be an evaluation system that consists of:
- Two tests during the semester (50% each test); or
- Final exam.
- Two tests during the semester (50% each test); or
- Final exam.
Teaching Staff
- Paulo Manuel Ferrão Canhoto [responsible]
