72875 - Heating and Air Conditioning Systems M

Learning outcomes

the achievement of credits allows to acquire the essential tools to understand and locate the thermo-mechanical plant equipment (heating, ventilation and air conditioning) of a building and in the general of a civil work.

Course contents

The course deals with the various aspects of the HVAC  systems in  buildings with particular focus on: comfort,  energy saving and the use of renewable energy sources as well as the interaction with building structures and performances. Starting from the basics of Technical Physics and Hydraulics (preparatory courses), this course discusses the key issues related to the design of heating and air-conditioning systems, of production of domestic hot water and of local energy production from RES. At the end of the course the student will have a base knowledge to evaluate different choices for HVAC systems and identify strategies for energy saving.

At the end of the course the student will have the basic knowledge to evaluate the possible choices for HVAC systems and identify strategies for energy saving.

The course is organised in lectures within the following modules.

A) Basic of Indoor Environmantal Quality (2h): Thermal Comfort,  Indoor air quality, Acoustic comfort. parameters and standard conditions in HVAC design

B) basics in Heat transfer (4h). Heat transfer in building structures. Heat exchangers. Calculation of building winter and summer thermal loads.

C) Hydronic heating and cooling Plants (14 h): Typologies and general criteria for the selection and sizing of a heating/cooling system. Terminals: Radiators, convectors, radiant systems, heat exchangers. Hydronic pipe systems and  schemes: pressure losses, pumps, balancing procedure. Safety and control system equipment and logics. Combustion heat generators: types and performances. Chimneys. Thermal power stations.

D) Air-conditioning systems (14 h) - Criteria for the selection and sizing of AC systems. Psicrometric transformations for winter and summer air conditioning. Typologies and schemes. Air diffusers. Design of duct networks. Air handling units. Filtration systems. Noise problems.

E) Cold and hot water pipe networks (6 h). Water needs; typologies. Design criteria of pipe network and water storage. Installation

F) Energy production from Renewable Energy Sources (14 h). Heat pumps. Solar Thermal plants. Photovoltaic systems. Types, technical characteristics, design criteria and schemes. 

G) Drains systems (3 hours)

H) Electrical systems for civil installation (3 hours)

 

MODULE 2 (2 credits) additional for the Building-Architecture course

I) Energy Analysis of building-plant systems (6 h). Building energy balance. Energy efficiencies of HVAC plants. Calculation of energy needs and primary energy. Legislation requirements and Energy certification .

J) practice with Edilclima Software (6 h). Software-assisted design and energy calculations examples

H) control of student's HVAC design

Readings/Bibliography

• Dispense e PPT del docente
• AA.VV. "Miniguida". ed. AICARR
• AA.VV. "Manuale di Progettazione termotecnica - Idronica". ed. AICARR
  
• AA.VV. “Manuale di progettazione edilizia” – vol.2, HoepliG. Moncada Lo Giudice, L. De Santoli, “Progettazione di impianti tecnici”, ed. Masson
• A. Magrini, L. Magnani, “La progettazione degli impianti di climatizzazione negli edifici” EPC Libri

Teaching methods

The lectures will provide the basis for the design of air conditioning systems. teoretical lectures will be joined by practical exercises,
Course attendance is essential to gain practical knowledge on HVAC design
Students  must develop a Design of an HVAC system.

Assessment methods

The final assessment is done through: 1) submission of HVAC design 2) oral exam, that ensures the acquisition of knowledge and expected skills.

Teaching tools

Slides of the lectures

Software to support design and energy calculation

Office hours

See the website of Giovanni Semprini