33980 - Plant General Services M

Course Unit Page

SDGs

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

Affordable and clean energy Industry, innovation and infrastructure Responsible consumption and production

Academic Year 2021/2022

Learning outcomes

A comprehensive review of the factors that influence the selection, design, specification and placement of most important and common industrial facilities.

Course contents

Topics on Plant facilities will include:

Industrial piping for fluid distribution; classification of steel and plastic pipes. Illustration of the main types of valves: shut-off, control, safety, pressure reduction. Examples of diagrams for the determination of the flow rate coefficient and the choice of valves. Insulation of pipes: characteristics and types of the main heat-insulating materials. Sizing of the coating thickness in the case of "hot" and "cold" piping. Total 8 hours (2 for exercises)

Cogeneration plants with internal combustion engines. Schemes of plant equipped with various recovery exchangers (oil, water, fumes). Comparison with steam cogeneration plants in backpressure: technical - economic assessment. Cogeneration plants with gas turbine groups. Comparison with steam cogeneration plants in backpressure and with cogeneration systems with internal combustion engines. Total 10 hours

Absorption refrigeration systems: description of the operating principle and comparison with the principle of operation of compression refrigeration systems. plant and the state diagram scheme (H-c; Tc) for the description of the refrigeration plant to H2O-NH3 absorption without and with concentration tower. Total 8 hours (1 for exercises)

Heat pump air conditioning systems: recalls on the characteristics and performance of heat pumps. Heat pumps controlled by electric motors. Economic analysis and possible use of pumps driven by an electric motor. Heat pumps controlled by endothermic engines. Economic analysis and possible use of endothermic engine driven pumps. Safety rules for the installation of heat pumps. Total 6 hours (2 for exercises)

Electrical systems. Classification electrical systems according to the voltage. Sizing of the overall power of the electrical installations in industrial field. Diagram of the transformer substation in the service of an industrial plant. Symmetrical and balanced three-phase systems for the distribution of electrical energy. Laying and calculation using cable lines. Main characteristics of the cables. Cable sizing according to IEC standards: verification of voltage drop and thermal verification. Protection by overcurrent devices (automatic circuit breakers): characteristic curves of behavior. Protection through differential switch device (application diagram and working principle). General information on the protective equipment of the electrical systems in relation to the installation environment: the IP protection. Total 12 hours (3 for exercises)

Lighting systems. Emission of radiant energy. Photometric and lighting dimensions. Reflection, absorption and transmission of light. Photometric solid and photometric indicator. Types of lighting (direct, semi-direct, etc.). Sizing design of lighting systems for interior by means of the total flow method: choice of the type of illumination and the light sources, definition and selection of the maintenance factors of use and the local index. Total 6 hours (2 for exercises)

Facilities for noise protection. Basic concepts of acoustics: sound power levels, sound pressure, sound intensity, and related reports. Noise propagation outdoors and indoors. Factor of directionality. Noise protection through sound barriers: the number of Fresnel. Sound absorption materials and structures. Acoustic correction for absorption and resonance. Current regulations for the protection of workers from risks arising from exposure to noise. Total 8 hours (3 for exercises)

Readings/Bibliography

textbook written by the teacher in course of publication, including exercises in preparation for the exam

Texts for consultation:

1. G. Coli, Impianti energetici ad elevato rendimento, Ed. PEG, Milano, 1992

2. G. Coli, Impianti per il benessere e la sicurezza dell'ambiente di lavoro, Ed. PEG, Milano, 1990

3. G. Coli, Impianti per la distribuzione dell'energia elettrica negli edifici industriali e civili, Ed. PEG, Milano, 1993

4. Monte A., Elementi di impianti industriali. Ed. Libreria Cortina, Torino, 1982

5. Pareschi A., Impianti industriali. Progetto Leonardo. Bologna, 1994

6. Pierfederici O., Impianti Meccanici. Ed. Pitagora, Bologna, 1980

Teaching methods

On the whole 60 teaching hours of frontal lessons and training corresponding to 6 ECTS. The main target is to give the student the right approach the dimensioning of facilities inside an industrial plant, according to economical evaluation and technical rules

Assessment methods

Students must put themselves onto the list published in Almaesani for each round.

Achievement will be assessed by the means of a final exam. This is based on an analytical assessment of the “expected learning outcomes” described above.

In order to properly assess such achievement, the examination is based on a written test, lasting up to three hours including the theoretical and practical development of three arguments, two of which theoretical issues and one numeric - themed application.

The rating is assigned based on the overall assessment of the whole test.

Higher grades will be awarded to students who demonstrate an organic understanding of the subject, a high ability for critical application, and a clear and concise presentation of the contents, with particular attention to the use and the comprehension of technical terms, graph and diagrams related to the service plants and the safety on work.

To obtain a passing grade, students are required to at least demonstrate a knowledge of the key concepts of the subject, some ability for critical application, and a comprehensible use of technical language.

A failing grade will be awarded if student shows knowledge gaps in key-concepts of the subject, inappropriate use of language and logic failures in the analysis of the subject. Then the exam result not sufficient if at least one question is not sufficient.

Teaching tools

Reference text

E. FERRARI - SERVIZI GENERALI DI IMPIANTO

Esculapio ed., 2021

ISBN: 9788893852623

Office hours

See the website of Emilio Ferrari