31410 - Energetics

Academic Year 2021/2022

  • Teaching Mode: Traditional lectures
  • Campus: Bologna
  • Corso: First cycle degree programme (L) in Energy Engineering (cod. 0924)

Course contents

Definition of measurement units for energy consumption: toe, tec, oil barrel. Brief Italian history of energy. Energy consumption in the world and in Italy. Analysis of the Enea Report.

Recall of thermodynamics: basic definitions, first law, energy, second law, impossibility of perpetual motion of the second type. Fundamental relationship and Gibbs equation.

Exergy. Flow exergy. Exergy balance equation for a closed system and for an open system.

Definition of exergetic efficiency of a motor cycle, a refrigeration cycle and a heat pump. Definition of the exergetic efficiency of the pump, compressor, boiler, heat exchanger. Exercises.

Lighting. The vision of light, lighting flux, fundamental photometric quantities - Natural and artificial lighting - Lighting comfort.

Presentation of the electricity market. Structure of the electric bill. Presentation of the natural gas market. White and green certificates. Role of Energy Manager and Esperto in Gestione dell'Energia.

Elements of economic analysis. Definition of simple pay back, discounted pay back, net present value, internal rate of return. Energy, exergetic, environmental and economic analysis applied to some examples, for the replacement of a boiler and a water heater.

The renewable energies. Solar energy. Recalls of thermal radiation and general introduction to solar energy. Biomass energy. Wind energy and dynamics of air masses.


readings given by the teacher

Teaching methods

lecutres and exercises in classroom

Assessment methods

The assessment aimed to verify knowledge and skills acquired by the student in relation to all the contents illustrated above. The assessment consists of a written exam, which includes a theory question and an exercise. During the examination, the use of books or bibliography/readings is not allowed.

After the publication of the test marks on Almaesami, students have 3 days to refuse the mark (by sending an email
with the explicit request to eugenia.rossidischio@unibo.it). The refusal of the mark cancels the result of the test. The mark recording occurs automatically. The mark recording will be carried out only if the student
has obtained the marks of both Energetics and Fundamentals of Business Economy and Innovation.

Teaching tools

Audiovisual systems; Learning material available online: https://iol.unibo.it/

Office hours

See the website of Eugenia Rossi di Schio


Affordable and clean energy Sustainable cities Climate Action

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