OVERVIEW

The course is aimed at students who wish to learn the fundamental concepts regarding the assessment of energy needs of buildings, their environmental impact and their coverage with renewable sources. Particular attention is set to the reuse of existing buildings where the energy requalification activity must deal with architectural, historical, urban and structural aspects that often limit the free design of insulation, efficient systems and integration with renewable sources.

AIMS AND CONTENT

LEARNING OUTCOMES

The course is directed to provide basic knowledge on the energy efficiency of buildings with particular attention to the interaction between the building envelope, heating and cooling plants and renewable sources

AIMS AND LEARNING OUTCOMES

The course Provides basic knowledge for the assessment of energy needs and the first approach for the design  of air conditioning systems and their integration with renewable sources.  It Analyzes the technical and legislative regulations at national and regional level in relation to energy efficiency. It Introduces the operating principles of solar systems (thermal and photovoltaic). It teaches   the Know how for using  use software for 2D analysis of thermal bridges and for energy certification.

TEACHING METHODS

“Working students and students with DSA certification, disabilities or other special educational needs are advised to contact the teacher at the beginning of the course to agree on teaching and exam methods that, in compliance with the teaching objectives, take into account individual learning methods”.

SYLLABUS/CONTENT

Part 1 Building envelope energy .In the first module, the thermal and electrical needs for heating, cooling, lighting and domestic hot water production in residential, commercial or office buildings will be identified. The typical thermal bridges of the Italian building stock and their influence on the contribution to heat losses and condensation and mould formation will be analyzed using finite element software, .Numerical exercises and feedback with practical exercises will be carried out using a thermal imaging camera and the aid of thermographic pictograms. Possible improvements at the building envelope level will be identified with particular attention to the reuse and recovery of existing buildings.

Part 2 Systems and renewables. In the second module, the current types of generation systems for heating and cooling will be analyzed, using traditional boilers, condensing heat pumps. The performance of the different systems will be analyzed and in particular the integration that can be offered by the main renewable sources: solar thermal, solar photovoltaic, geothermal, wind, cogeneration.

Part 3 Regulations for certification and energy diagnosis . In the third module, the calculation assessments indicated by the technical regulation UNI 11300 parts 1 to 6 for the evaluation of the primary energy requirement for the different energy services of buildings will be presented. The calculation processing will be carried out using the free software. The economic convenience indicators provided by Legislative Decree 102 and the related technical regulation UNI 15459 will be analyzed. An energy certification ( and, for those who have time, also a subsequent diagnosis) of a property for residential or office use is expected. 50 hours (30 of lessons and 20 of exercises)

RECOMMENDED READING/BIBLIOGRAPHY

Dispense del corso su Aulaweb

P. Cavalletti- Certificazione energetica – TEST CON SOLUZIONI RAGIONATE Mc Graw Hill 2010 ISBN 9788838662645

P. Cavalletti – F Arecco Efficienza e Certificazione energetica negli edifici – 2010 Wolters Kluwer Italia srl  ISBN 9788821733550

P.Cavalletti  -S. Bergero Arecco Fabbri Applicazioni pratiche di certificazione Energetica” - 2015 Dario Flaccovio editore ISBN 978-88-579-0400-9

P Cavalletti – C Fabbri L.A. Tagliafico. Un modello di diagnosi energetica applicato ad alcuni casi di studio  Atti Convegno Comfort abitativo studio Attiologna 

P. Cavalletti C Fabbri N Montaldo – La rivalutazione della tecnica di coibentazione a insufflaggio a seguito del decreto requisiti minimi degli edifici - La termotecnica ottobre 2015 ISSN 0040-3725

P Cavalletti - Thermal bridge correction in energy refurbishing of civil existing buildings according to European minimum energy targets by 2020: pratical application to one case study, JCEAR 2-2016

P. Cavalletti S. Bergero L’incidenza del coefficiente medio globale di scambio termico per trasmissione nelle ristrutturazioni importanti di primo e secondo livello alla luce del DM 26/06/2015- La termotecnica marzo 2016

P. Cavalletti, S.Bergero Mean heat transmission coefficient as a new parameter to control heat transmission and mould growth in building refurbishment JCEAR 3-2016 ISBN 978-88-95620-64-0

C Fabbri, M De Rosa, Tagliafico Luca A., Cavalletti P Optimal Regulation Criteria for Building Heating System by Using Lumped Dynamic Models 6th International Building Physics Conference, IBPC 2015 ELSEVIER P 1665-1670 VOL78 

P. Cavalletti, S. Bergero, M. Michelini, C. Fabbri Termoregolazione e contabilizzazione del calore ai sensi del D.Lgs. 102-2014 - Analisi di fattibilità, convenienza e risparmio energetico pagg 53 59 La termotecnica maggio 2016

S. Bergero P. Cavalletti A. Chiari Thermal bridge correction in energy refurbishment of existing buildings: a case study 11th Conference on Advanced Building Skins 10-11 October 2016, Bern, Switzerland pag 147-157

Luca A. Tagliafico, Paolo Cavalletti, Claudia Fabbri and Federico Scarpa Dynamic Behaviour and Control Strategy Optimization for Conventional Heating Plants in Buildings ISSN: 0392-8764 Vol. 34, Special Issue 2, October 2016, pp. S505-S511

P. Cavalletti, S. Bergero, M. Michelini, Termoregolazione e contabilizzazione: convenienza economica per zona climatica di unità immobiliare italiana tipo mediante aggregazione di dati campione pagg 58-63 La termotecnica dicembre 2016

P. Cavalletti, S. Bergero Energy Audit of a ‘60 Residential Building Served by a Steam Heating System J. Civil Eng. Architect. Res. Vol. 4, No. 1, 2017, pp. 1880-1890 Received: December 13, 2016; Published: January 25, 2017

S. Bergero P. Cavalletti A. Chiari Energy refurbishment in existing buildings: thermal bridge correction according to DM 26/06/2015 limit values. 50th AiCARR INTERNATIONAL CONFERENCE "Beyond NZEB buildings" Matera (Italy) Maggio 2017 atti del convegno pagg 174-178

P. Cavalletti, S. Bergero, M. Michelini, Analysis of thermal control and heat accounting economic convenience in typical Italian housing unit and climatic zones. AIGEE conference in june 2017 Genoa paper n°10

P. Cavalletti et al LINEE GUIDA PER AUDIT ENERGETICI SU EDIFICI RESIDENZIALI http://www.muvita.it/OLD_SITE/Public/pdf/LineeGuida_4.pdf.

LESSONS

LESSONS START

https://corsi.unige.it/en/corsi/11926/studenti-orario

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

The exam consists in an oral exam that can be taken by appointment via email with the teacher paolo.cavalletti@unige.it, by students who have received validation of the project paper and who have filled out the questionnaire for the detection of teaching quality (course code 91052). The oral exam is preceded by an individual project paper to be carried out during the classroom exercise hours, which has the purpose of verifying the existence of a level of preparation suitable for solving numerical problems related to the course and which gives the possibility of access to the oral exam. This paper must be approved before being able to access the oral exam.

ASSESSMENT METHODS

The assessment of the learning of the course topics will be carried out through an oral interview, in which the preparation and the presentation of the course topics will be assessed. The exercitation is preparatory and must be approved before the student request to schedule the oral exam . The oral exam will focus mainly on the topics covered during the lectures and will aim to assess not only whether the student has reached an adequate level of knowledge, but whether he has acquired the ability to critically analyze the environmental energy problems in the field of buildings.