# Thermodynamics and energetics.

lmeca1855  2019-2020  Louvain-la-Neuve

Thermodynamics and energetics.
Note from June 29, 2020
Although we do not yet know how long the social distancing related to the Covid-19 pandemic will last, and regardless of the changes that had to be made in the evaluation of the June 2020 session in relation to what is provided for in this learning unit description, new learnig unit evaluation methods may still be adopted by the teachers; details of these methods have been - or will be - communicated to the students by the teachers, as soon as possible.
5 credits
30.0 h + 30.0 h
Q1
Teacher(s)
Language
French
Main themes
• Thermodynamics of ideal gases
• Introduction to heat transfer and to heat exchangers
• Phase equilibria, change of phase.
• Gas turbines
• Refrigeration engines
• Compression and expansion of gases
• Pressure losses
• Humid air
• Introduction to Rankine cycles
Aims
 At the end of this learning unit, the student is able to : 1 In consideration of the reference table AA of the program "Masters degree in Mechanical Engineering", this course contributes to the development, to the acquisition and to the evaluation of the following experiences of learning: AA1.1, AA1.2, AA1.3 AA2.1, AA2.2, AA2.5 AA3.2, AA3.3 AA5.1, AA5.5, AA5.6 AA6.1, AA6.4

The contribution of this Teaching Unit to the development and command of the skills and learning outcomes of the programme(s) can be accessed at the end of this sheet, in the section entitled “Programmes/courses offering this Teaching Unit”.
Content
• Basic aspects of technical thermodynamics: balance equations of the motive power, ideal gas, properties of gaseous systems, entropic diagrams, simple transformations of state, irreversibilities, work of friction in straight pipes, regular/singular pressure drops.
• Compression and expansion: energy balances, isentropic and polytropic models/efficiencies, compressors, fans, turbines, axial and radial engines, kinematic analysis, characteristics curve of a turbomachinery, of a circuit, working point stability, compressors with intermediate cooling.
• Thermodynamics of vapors: phase change, determination of the state variables, thermodynamic diagrams and tables.
• The humid air: formalism, absolute/relative humidity, dry/wet bulb temperature, Mollier chart, air-water mixtures, humid air mixing
• Heat exchangers: Fourier law, convection coefficient, overall coefficient of heat transfer through a wall, parallel or counter-current tubular heat exchanger, efficiency of a heat exchanger.
• Gas turbines: calculations of the thermodynamic cycle, optimisation, static applications.
• Power generation with steam: Rankine-Hirn cycle, main components, energy analysis, energy balance over each component, efficiency, physical/thermodynamic constraints, introduction to exergy analysis
• Refrigeration engines: simple cycle, selection criteria of the thermodynamic fluid, cycle with double compression and double expansion, cascade cycles. The heat pump.
• Practical sessions: they include exercises.
• The pedagogical methods used aim at developing a sound understanding of the physics of the physical phenomena involved and knowledge of the systems which enable to achieve the thermodynamic processes
Teaching methods
• Course lectures
• Session of exercises
Evaluation methods
Written exam consisting of  theoretical questions  and exercises with a total duration of 4h. The exam is with closed books and notes. The score on the theoretical questions of the exam counts for 50% of the overall score. The score on the exercises of the exam counts for 50% of the overall score.
Other information
Lecture notes of the course LMECA1855, available on the Moodle site of the course and ay SICI.
Online resources
Bibliography
• Notes du cours LMECA1855, disponibles sur le site Moodle du cours et au SICI
• Transparent du cours magistral, disponibles sur le site Moddle du cours
• Ennoncés d'exercices, disponibles sur le site Moddle du cours
• Eléments de thermodynamique technique, J. Martin, P. Wauters, Presses universitaires de Louvain, 2014.
• M. J. Moran, H.N. Shapiro : Fundamentals of Engineering Thermodynamics, John Wiley, 1995.
• Notes du cours LMECA1855, disponibles sur le site Moddledu cours et au SICI. Obligatoire.
• Transparent du cours magistral, disponibles sur le site Moodle du cours. Obligatoire.
• Ennoncés d'exercices,  disponibles sur le site Moodle du cours. Obligatoire.
• Eléments de thermodynamique technique, J. Martin, P. Wauters, Presses universitaires de Louvain, 2014. Conseillé
• M. J. Moran, H.N. Shapiro : Fundamentals of Engineering Thermodynamics, John Wiley, 1995. Conseillé
Teaching materials
• Notes du cours LMECA1855, disponibles sur le site Moodle du cours et au SICI
• Transparent du cours magistral, disponibles sur le site Moddle du cours
• Ennoncés d'exercices, disponibles sur le site Moddle du cours
• Eléments de thermodynamique technique, J. Martin, P. Wauters, Presses universitaires de Louvain, 2014.
• M. J. Moran, H.N. Shapiro : Fundamentals of Engineering Thermodynamics, John Wiley, 1995.
Faculty or entity

#### Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Sigle
Credits
Prerequisites
Aims
Minor in Engineering Sciences: Mechanics (only available for reenrolment)

Minor in Mechanics

Specialization track in Mechanics