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Scheda Riassuntiva
Anno Accademico 2017/2018
Scuola Scuola di Architettura Urbanistica Ingegneria delle Costruzioni
Insegnamento 051658 - BUILDING SERVICES AND BUILDING ENERGY MODELLING
Docente Motta Mario , Scoccia Rossano
Cfu 12.00 Tipo insegnamento Corso Integrato

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Nome Sezione Insegnamento
Arc - Urb - Cost (Mag.)(ord. 270) - MI (1095) BUILDING AND ARCHITECTURAL ENGINEERINGBE1AZZZZ051658 - BUILDING SERVICES AND BUILDING ENERGY MODELLING

Programma dettagliato e risultati di apprendimento attesi

The course is divided in two parts of 6 CFU each, with two different lecturers: part 1 Motta and part 2 Scoccia.

The first part (Part 1) is dedicated to the study of HVAC systems, in particular for low energy houses:

Objectives and contents of the course

The aim is to provide tools to support the design of energy related building installations with particular attention to buildings with very low energy requirements. After an introductory phase describing the constraints and the regulatory framework, the various types of plant available and their design specifications will be examined. Project issues of energy systems using renewable sources in buildings will be addressed, covering the thermal power supply for heating, air conditioning and hot water production. The course will focus on the study of the energy and economic optimization of conventional technologies and the use of solar energy, heat pumps and heat recovery systems, while dealing with thermal and hydraulic systems in buildings.

Description of topics that could potentially be tackled:

  • Introduction: Thermodynamics and heat transfer issues related to buildings and HVAC. Climate change introduction and its impact on building and building services design. Regulatory framework for the integrated system building-HVAC: national and European.
  • Economic Evaluation Criteria and Multicriteria Analysis: Cash Flow, VAN, PBT, internal rate of return, saved energy cost. Method for multicriteria analysis.
  • Actual and future solutions for high energy efficiency building: Renewable energy sources. Calculation of the renewable fraction and analysis of the performance of systems using renewable sources such as heat pumps, QR analysis examples and primary energy consumption. Introduction on thermal energy generation. The integrated (holistic) design of the complex building-HVAC systems. The importance of controlled mechanical ventilation.
  • Technological networks: Introduction of flow of incompressible fluids. Calculation of distributed and localized pressure losses: use of graphical and numerical methods. Design criteria for water and air distribution networks.
  • Heat exchangers: Typologies, sizing method (LMTD and epsilon-NTU), global thermal exchange coefficient, condensers and evaporators. Calculation method for dehumidifying batteries.
  • Solar thermal systems: Solar Energy Fundamentals. General introduction on Solar Thermal Systems. Functional typologies, system diagrams, features, design concepts. Flat solar thermal collector: Typologies, characteristics, product certification standards and performance characteristics, determination of flat plate collector performance equation, yield as function of input temperature and average of the thermal fluid. Thermal storages: Typologies and characteristics (air and water), criteria for sizing and calculation of performance. Other components of the system: thermal fluid, valves, expansion vessel. Methods for sizing the expansion vessel on the primary of a solar thermal system. Methods for dimensioning active solar collector systems.
  • Heating systems: Design of a heating system. Components for heating systems: circulation pumps, control valves circuits, chimneys, expansion vessels. Thermal energy generators: electric and gas heat pumps, boilers. Gas boilers for centralized plants: constant, sliding and condensing temperature. Emission terminals.
  • Winter / summer air conditioning systems: Design of a an air-conditioning system. refrigeration cycles and psychrometrics. Types of air based systems: All-air systems and mixed systems, with constant flow and variable temperature, variable flow and constant temperature. Components of ventilation systems: emission and extraction systems. Air Handling Units (AHU): Description and Components (grids, dampers, humidifiers, coils, recuperators). The fans. Other plant components: Terminals, pumps, control valves, and control, chillers, absorption machines, cooling towers air distribution systems. Open cooling cycles.

The second part (Part 2) is focused on mathematical Modeling and simulation of the integrated system: Building - HVAC.

The building energy modelling sub-course focuses on the energy modelling and simulation of heating, ventilation and air conditioning systems for buildings.
Thus, the topics already seen in the previous courses like “building physics” and the topics discussed in the parallel course “building services” will be further discussed and applied to energy system modelling and simulation.
Specifically, the main course topics are: building energy needs, heat exchangers, hydronic systems, heating generation systems, solar thermal systems, air handling unit, vapour compression and absorption heat pumps, cost-benefit analysis.

 


Note Sulla Modalità di valutazione

For what the Part 1 concerns, the course will be organized to cover 40 hours of lectures on the topics mentioned in the program. Than 16 hours of exercise will be performed during the course to provide application examples.
Verification methods include the final evaluation by means of a written exam on the topics of theory taught in class, also (or exclusively) through application examples. Candidates will be given the possibility (except in specific
cases at the discretion of the lecturer) to accept the written test mark or to take an additional oral exam.

For what the Part 2 concerns lower (24 hours) is the effort on lectures than in the exercises on application examples of modeling and simulation (48 hours). 
The evaluation process is composed by two sections:

  1. Assignments. During the course, the students will work in small groups on several assignments. Each assignment will be evaluated as «passed» or «not passed – revision needed».
  2. Written test. Each student will be evaluated through a written test on the topics discussed during the course.

The final grade of part 2 is officially registered only if the students have passed the assignments.

 

The final overall mark (FM) will be given as: FM = 0.5 *Part 1 + 0.5 *Part 2. In order to pass and obtain the FM the candidate has to pass (18/30) both Parts.


Bibliografia

Mix Forme Didattiche
Tipo Forma Didattica Ore didattiche
lezione
72.0
esercitazione
48.0
laboratorio informatico
0.0
laboratorio sperimentale
0.0
progetto
0.0
laboratorio di progetto
0.0

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.6.6 / 1.6.6
Area Servizi ICT
24/07/2021