79586 - Mechanical Systems T

Academic Year 2021/2022

  • Docente: Cesare Saccani
  • Credits: 6
  • SSD: ING-IND/17
  • Language: Italian
  • Teaching Mode: Traditional lectures
  • Campus: Bologna
  • Corso: First cycle degree programme (L) in Energy Engineering (cod. 0924)

    Also valid for First cycle degree programme (L) in Energy Engineering (cod. 0924)

Learning outcomes

The course provides the knowledge required to design and optimize the mechanical plants that are most commonly encountered in the industrial field.

Course contents

Fundamentals of energetic concepts, fluid dynamics and thermodynamics: industrial applications and numerical considerations

Interception valves. Regulation valves and actuators: working principles and sizing. Thermostatic valves, pressure regulated valves and safety valves: working principles and sizing

Compressors and blowers: Types, characteristic curves, prevalence, sound level pressure. Volumetric compressors: types, working principles and characteristic curves.

Condensate drainers: condensate formation and working principle.

Heat exchangers: fundamentals. Mixing and surface heat exchangers. Types of surface heat exchangers. Sizing method.

Air compressed plant: production of compressed air, condensate formation and main components sizing.

Fluid distribution network sizing: pressure losses calculation, cavitation, water network sizing method, thermal losses calculation and dripping problem.

Water supplying and distribution plants: from aquatic groundwater to distribution to end users, water storage tanks and autoclaves.

Refrigeration plants: types of refrigerant fluids (standards and p-H diagrams). One and multiple stage compressor refrigeration systems. Refrigeration systems’ sizing method.

Cooling towers: architecture and design, working principles, mass and energy equation.

Powder separation and filter plants. Particular Matter and granulometric composition definitions. Air filters classification. Inertial separators, baghouse, electrostatic filters and wet separators. Gravity separators sizing method. Cyclone filter sizing method. Dust capture system in working place.

Steam production plants for technologic scopes: steam plants and steam generators.

Thermal industrial processes: multiple effects concentrators and barometric condenser.

Absorption refrigeration systems: ammonia absorption refrigeration plant. Lithium bromide absorption refrigeration plant.

Cogeneration and trigeneration plants. Cogeneration with steam power plant, cogeneration with internal combustion engines and with gas turbines.


Impianti Meccanici, Sergio Fabbri ed. Patron (in biblioteca); Impiantistica Meccanica, Sergio Fabbri, ed Pitagora.

Teaching methods

Lectures in classroom. Practical exercises in classroom, in laboratory and at industrial companies.

On line lectures.

Assessment methods

The final exam consists of a written and an oral assessment aiming at assessing the learning of the design methodology of mechanical industrial plants learned during the course.

In the final test it is also evaluated the ability to define P&IDs, schemes and thermodynamic diagrams and to size the main components.

On line exams.

Teaching tools

Slides of the whole program available on my website.

Office hours

See the website of Cesare Saccani


Affordable and clean energy Industry, innovation and infrastructure Sustainable cities Climate Action

This teaching activity contributes to the achievement of the Sustainable Development Goals of the UN 2030 Agenda.