65773 - Mechanical Plants

Course Unit Page


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

Clean water and sanitation Affordable and clean energy Industry, innovation and infrastructure Climate Action

Academic Year 2021/2022

Learning outcomes

The course provides in-depth elements, compared to the knowledge acquired in the Bachelor's degree, for analysis, concept design, final and construction of the plants. They provide expertise, technical and methodological level, for the student's education compared to the path that leads to the design of the plant. Are finally shown some significant research activities in the environmental and energy sector - with particular reference, for example, to energy recovery from renewable sources, such as biomass - with emphasis on the technical and scientific level as regards the engineering of experimental plants.

Course contents

Modulo 0: Fundamentals.

0. Fundamentals of components.

Valves and actuators.

Compressors, steam traps and filters.

Heat exchangers.

Module 1: Plants for energy production by biomass.

1.1 Classification  and  characterization  of  biomass  for energy utilization.

Biomass classification.

Chemical-physical characteristics of biomass.

Biomass in Italy.

Plants for development of energy from biomass: generalities.

1.2 Biomass combustion.

Introduction: mechanisms of formation of organochlorine compounds.

Analysis of biomass combustion.

Optimization of combustion chamber.

1.3 Biomass boilers.

Boiler typologies.

Boiler design.

Designing aspects related to safety.

Buffer tank design.

Domestic hot water heating and production.

1.4 P&I of a heating plant with biomass boiler.

P&I of biomass boiler.

P&I of a heating plant with biomass boiler.

Plant components sizing.

Module 2: mechanical plants.

2.1 Absorption lithium bromide refrigerator system.

Absorption refrigerator plants:  P&I,  thermodynamic  diagrams and designing.

General information on solar cooling.

P&I and sizing of a solar cooling system.

Module 3: mechanical plants.

3.1 Pneumatic conveying plant.

Basic knowledge and characteristics of pneumatic conveying plants.

Characteristic elements of pneumatic conveying plants.

P&I and layout of pneumatic conveying plants.

Monitoring   and   control   systems    for   pneumatic   conveying   plants.


3.2 Natural gas compression plant.

General description of natural gas compression plant.

Gas, oil, water and air circuits.

Control panel.

Testing procedures.

3.3 Refrigeration plant at three levels of temperature.

Compression refrigeration plant.

System components sizing.

Module 5: Plants regulations and directives

5.1 ATEX directive.

Basic knowledge on ATEX.

Applicative example.

5.2 PED directive.

Basic knowledge on PED directive.

Applicative example.


Impianti Meccanici, di Sergio Fabbri, Ed. Patron.

Elementi di Impiantistica Meccanica_Aria e Acqua, di Sergio Fabbri, Ed. Pitagora Editrice Bologna.

Impianti Meccanici per l'Industria, di Arrigo Pareschi Ed. Progetto Leonardo, Bologna.

Slides on Cesare Saccani official Web site.

Teaching methods

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

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.

Teaching tools

Suggested texts and slides of the whole program on my website.

Links to further information


Office hours

See the website of Cesare Saccani