Progettazione di Impianti di Climatizzazione
Air-conditioning system design Paolo Principi
Heat and mass transfer, thermodynamics, fluid dynamics
KNOWLEDGE AND UNDERSTANDING:
The aim of the course is to provide students with advanced knowledge on components of heating and cooling systems, ventilation and air conditioning systems and to refine their ability in system typologies, design procedures, in the graphic representation of the components of a project and, at the end, on application to several types of building. This knowledge, by integrating those already gained in thermodynamics , heat and mass transfer, thermal systems, fluid dynamics, will enhance the expertise in the field of air conditioning systems for the achievement and maintenance of the environmental comfort conditionsCAPACITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
With the purpose to address and develop knowledgeably advanced design techniques, even complex, and proceed to the development of innovative products and system components, of new technological processes through the application of knowledge, the student will know how to design the air conditioning systems of buildings with optimization criteria. This capacity will be expressed through a number of professional skills, such as: 1. the ability to carried out the numerical analysis to evaluate the building envelope energy behavior in the different seasonal phases 2. the ability to perform the design of the components of air conditioning systems 3. the ability to proceed to optimized choices of systems in function of the use of the building 4. the ability to graphically return the plant schemes in accordance with standards, rules and laws relating to the design.TRANSVERSAL SKILLS:
The use of computer aided design (CAD) and software tools improve the knowledge related to the design process and the project documentation. The use of software for the integrated design of both the building and the related HVAC (Heating Ventilating and Air Conditioning) systems will improve the assessment of the energy performance of the whole system. The awareness of the acquired knowledge enhance students autonomous judgement and team working skills
Design and contract. Thermophysical characteristics of the building envelope. Environmental conditions of the project. Calculation of the winter heat loss. Estimation of heat loads in summer. Energy-saving patics. Elements of psychrometers: psychrometric variables, psychrometric charts, transformations termodibnamiche moist air. Comfort termoigrometico: energy balance of the human body, thermal power scattered by the human body, environmental variables influencing the comfort, method of measurement of variables. The noise emitted by plants. Types of plants. Hydronic networks: open and closed loop, types of distribution pipes, pipe thermal insulation, fixings, sizing of the lines and equipment related to them. Circulation pumps. Systems of regulation and supervision. Safety systems: open and closed expansion vessels, safety valves sizing. Terminal units: fan coil unit, radiant heaters. Air handling units : supply fans, humidifiers, chilled water and direct expansion coils, heating coils, filters, motor and drives, air to air heat recovery. Air duct design: ducts: sheet metal, insulated, textile, flexible thermal insulation of the channel, special parts, dampers, attenuators acusrtici, fire dampers. The diffusion of air. The air handling units, components, heat recovery, thermal stations: characteristics of the plant room, boilers, burners, chimneys, distribution manifolds, propulsion systems. Chiller and cold storage, cooling towers. Heat pumps.Patterns of plant. Selection criteria for air conditioning systems. Main techniques for the thermal and hydraulic performance and design pratics. Hot water production by solar collector plant. Design of air conditioning systems for industrial and service sectors
Development of the examination
LEARNING EVALUATION METHODS
: During the oral exam the student must demonstrate knowledge of the topics of heating, ventilating and air conditioning systems. The exam questions will cover the various thematic areas discussed in class by the teacher.
LEARNING EVALUATION CRITERIA
During the examination of the project, student must demonstrate that they have executed it in accordance with current standards and laws , to have properly sized components and graphically returned the air conditioning system of plans and cross section drawing. With the answers to the questions, students must demonstrate that she/he have mastered the issues of the entire teaching program.
LEARNING MEASUREMENT CRITERIA
The course final grade is expressed in thirtieth with a threshold of 18/30. Students showing thorough preparation and insightful analysis will be awarded the highest grade with honors (30 cum laude).
FINAL MARK ALLOCATION CRITERIA
The final grade is computed by adding the evaluation of the answers to the questions posed during the oral exam and the quality of project of HVAC. Honors (30 cum laude) will awarded to the students who demonstrates to have fully mastered the subject and shows the ability to apply the acquired knowledge in different items of course.
Luca Stefanutti - Manuale degli Impianti di Climatizzazione- Tecniche nuove
Carrier Air Conditioning Company, Handbook of Air Conditioning System design. McGraw Hill.
Files in pdf of the power point slide and the tool used during the course, downloaded from lms.univpm.it portal, using the university's credentials for access and password given during the course.
- Ingegneria Meccanica (Corso di Laurea Magistrale (DM 270/04))