# 28664 - Energy Management T -1

### Course Unit Page

• Teacher Paolo Valdiserri

• Credits 9

• SSD ING-IND/10

• Teaching Mode Traditional lectures

• Language Italian

• Campus of Bologna

• Degree Programme First cycle degree programme (L) in Engineering Management (cod. 0925)

### SDGs

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

## Course contents

The nature of thermodynamics: temperature and heat - Applications of thermodynamics to the closed system - The first law of the thermodynamics: work, internal energy and energy balances - The second law of thermodynamics and formulation of entropy - The open system: conservation of mass and balance of mechanic energy - Macroscopic properties of pure substances: (p,v,T) surface and (p,v) diagram - Ideal gases and equation of state - (T,s) Diagram - Conventional thermodynamic cycles: Rankine cycle, refrigeration cycles and heat pump.

Thermal conduction: Fourier's law - Fourier's equation - Simple cases of steady state conduction in cartesian and cylindrical coordinates - Thermal resistance and electrical analogy: thermal resistances networks. - Thermal convection - The Newton's law - Heat transfer coefficient and Nusselt number - Thermal radiation - Overall heat transfer coefficient - Heat Exchangers.

Energy performance of buildings - Air and water vapour mixtures: psychrometrics - Heating equipment, heating and cooling systems and applications -Load calculations and energy requirements: weather information, thermal insulation and moisture retarders, fenestration, building envelope systems. NPV and SPBT in energy efficiency problems - Renewable energy sources : solar energy, heat pump, geothermic, biomass and aeolian energy

The handwritten notes taken during the lessons and the material given by the teacher are enough to prepare for the exam. In order to achieve a deeper knowledge of some topics or for self-study, the following books are suggested:

- Moran, Shapiro, Munson, DeWitt, Elementi di Fisica tecnica per l'ingegneria, Edizione italiana a cura di Mauro A. Corticelli, McGraw-Hill;

- M. Spiga, Efficienza energetica e termofisica dell'edificio, Soc. Ed. Esculapio;

- Beretta, De Carlo, Introna, Saccardi, Progettare e gestire l'efficienza energetica, McGraw-Hill;

- Y.A. Çengel, Termodinamica e trasmissione del calore - Quarta edizione, McGraw-Hill;

- AA.VV., Manuale di progettazione edilizia - Volume secondo - Criteri ambientali e impianti, Hoepli Editore;

- G. Moncada Lo Giudice, L. De Santoli, Progettazione di impianti tecnici - Problemi ed applicazioni - Seconda edizione, Casa Editrice Ambrosiana;

- M. D. d'Accadia, Applicazioni di energetica. Introduzione all'analisi tecnico-economica di sistemi per il risparmio energetico, Liguori.

- Applicazioni di termofisica dell'edificio e climatizzazione / Vincenzo Corrado, Enrico Fabrizio. - 2. ed. - Torino : CLUT, 2009.

## Teaching methods

Classroom lessons and guided solution of exercises

## Assessment methods

The final exam consists of a written test and an oral part, dealing with the notions presented during the course. The written session usually consists of 3 numerical questions. In order to be eligible to take the oral exam, the student must score in the written test a minimum total of 18/30 points. The oral session consists of a technical conversation aimed at evaluating the organic understanding of the subject with reference to the key concepts illustrated during the course.

## Teaching tools

Blackboard, transparencies and projector.

## Office hours

See the website of Paolo Valdiserri