The aim of the Machines course/unit is the presentation of the main construction and operative features of fluid machines of large industrial interest. Special attention is devoted to machine choice, and machine-plant interaction aspects to optimize their performance. Moreover, the main power plants will be analysed considering their applications, performance and operative conditions.
Course Prerequisites
Knowledge of mathematics and physics. Basic knowledge of applied physics (thermodynamics, fluid dynamics, hydraulics, etc.).
Teaching Methods
Lessons (hours/year in classroom): 45. Exercises (hours/year in classroom): 0. Practical experiences (hours/year in classroom): 0.
Assessment Methods
The exam will be based on oral questions that could be performed with a writing support (blackboard or a sheet of paper). Details on the exam preparation will be presented during the lessons. The exam aim will consider not only the evaluation of the knowledge level, but also if the student acquired analysis knowledge for energy system problems to be presented with a correct terminology. The student will be asked to design the plant schemes, analyse the behaviour in the main thermodynamic plans and to develop design calculations in agreement with what presented during the lessons.
Texts
All the slides used during the lessons and other teaching material will be available. In general, lesson notes and slides will be enough to successfully prepare the exam. These books are suggested as support: - O. Acton, C. Caputo, "Macchine a fluido", UTET; - R. Della Volpe, “Macchine”, Liguori Editore.
Contents
- General aspects. - Introduction to the course and the machine study. - Hydraulic elements. - Hydraulic operating machines. - Basic concepts, classification, working conditions and pump choice criteria. - Alternative and centrifugal pumps. - Hydraulic turbines. - Hydraulic energy utilization. - General aspects on the hydroelectric plants. - Impulse and reaction turbines. - Thermal machines - Thermodynamic aspects and cycles. - Steam turbines. - Steam power plants. - Impulse and reaction steam turbines. - Wind turbines. - Gas turbines. - Alternative and rotating compressors. - Cogeneration plants and combined cycles. - Aspects of internal combustion engines.
