Learning objectives
At the end of the course, the student is expected to be able to:
- learn the fundamental principles of thermodynamics and their technical implications.
- learn and know how to apply the fundamental heat transmission mechanisms;
- learn and know how to apply mass and energy balance;
- be able to calculate the amount of heat and mass exchange between the building and thermotechnical plants, as well as between the building and the surrounding environment.
Prerequisites
- - -
Course unit content
Units of measurement.
Basic elements of classical physics: kinematics and dynamics.
Thermodynamics.
Closed and open systems.
Mixtures of air and water vapor.
Fluid dynamics.
Heat transfer.
Full programme
Thermodynamics.
Definitions: systems and properties. Units (SI). Closed and opensystems. Forms of energy. First Law. Second law. Entropy. Irreversibility. Closed systems: conservation of mass, conservation of energy. Open
systems: definitions, conservation of mass, conservation of energy, steady and transient processes. Properties of pure substances, equilibrium diagrams (p,v) (p,T). Incompressible substances and their
properties. Vapours: quality and other properties. Ideal gas. Vapor power cycles: Rankine cycle, ideal cycle, reheat. Refrigeration vapour cycle. Coefficient of performance. Thermodynamic efficiency. Simple
multicomponents systems. Ideal gases mixtures.
Mixtures of air and water vapour.
Thermodinamic properties of humid air: specific and absolute humidity, specific entalphy. Psicrometric chart. Dew point temperature. Dry and wet bulb temperature. Psicrometer.
Fluid flow.
Physical aspect of the fluid flow. Coefficient of viscosity. Laminar and turbulent flow. Boundary layer. Reynolds number. Fluid flow in pipes. Integral equations Energy bilance equation. Bernoulli equation. Friction losses. Velocity and mass flow rate measurements in fluids. Compressible
fluids. Mach number.
Heat transfer.
Conduction. Fourier law. Steady state conduction. Electrical analogy. Convection. Dimensional analysis. Thermal boundary layer. Forced, natural and mixed convection. Thermal radiation. Definitions. Laws of
thermal radiation: Plack's law, Stefan-Boltzmann law. View factor. Applications to thermal radiation heat transfer between black and grey surfaces. Overall heat transfer coefficient.
Bibliography
CENGEL YUNUS A., Introduction to Thermodynamics and Heat Transfer, Ed Mc Graw Hill
Teaching methods
The course is divided into lectures and tutorials, which are an opportunity to assess and clarify the theoretical knowledge acquired.
Assessment methods and criteria
The exam consists of a written test (60 minutes long) containing two numerical exercises (with a value of 7 points each) and two theoretical questions (with a value of 7 points each).
The results of the written test will be sent by email to the students. Those who have passed the written test (it means having obtained at least 18 points) take an oral examination ( +/ - 5 points).
On "Elly" website, you can find manyexamples of the past exams.
Other information
- - -
