Master's degree in "Construction Engineering" - LM 24 - 2nd year
Course program of:
TECHNICAL BUILDING PLANTS
CFU: 6 SSD: ING-IND / 11 A.A. 20019/20
Prof. Paolo ZAZZINI
1. THERMO-HYGROMETRIC COMFORT:
Definition of the conditions of thermo-hygrometric comfort within the environments;
Thermal interactions between the human body considered as a thermodynamic system and the surrounding environment: metabolic activity, latent and sensitive thermal exchanges, natural thermoregulation mechanisms, the thermal resistance of the clothes. Equation of thermoigrometric comfort;
Statistical methods for the evaluation of comfort conditions, FANGER theory, PMV, and PPD indices.
Definition of the optimal values of the environmental parameters controllable with technical systems that influence the internal thermohygrometric conditions. Conditions of local discomfort.
2. ENERGY BALANCE OF THE PLANT BUILDING SYSTEM:
The energy design of the building (Legislative Decree 192/05 and 311/06, Presidential Decree 59/09);
Definition of climate zones based on the number of Day Degrees, an annual period of operation of the heating system, classification of types of buildings.
Verification of the winter and summer energy performance index, verification of transmittances, verification of the surface mass of opaque walls, verification of the overall average seasonal performance, the energy certification of buildings.
Architectural choices for the optimization of free energy supplies: orientation, glass surfaces, insulation of the building envelope.
3. THERMAL PLANTS
Description of various types of heating systems.
Centralized heating systems: description of the components and heat transfer fluids used; heat generators in steel, cast iron, smoke pipes, water pipes, in depression, blown air, condensing boilers.
Characteristics of technical rooms: dimensions and safety requirements.
Distribution systems of the heat transfer fluid: natural and forced circulation networks, integration problems with the building envelope.
The heating terminals: radiators, fan coils, unit heaters, emission characteristics, and geometries. An example of space minimization: radiant floors.
Independent heating systems: single-family heat generators.
Distribution systems with coplanar manifolds: the arrangement of heating bodies in series or parallel.
4. ESTIMATION OF SUMMER THERMAL LOADS
Sensitive and latent thermal loads, thermal balance in the environment in the variable regime.
Simplified calculation methods, the incoming solar radiation, the problem of carried shadows, the internal thermal loads.
5. THE AIR-CONDITIONING PLANTS
The different types of systems: all-air, all-water, mixed air-water systems.
All-air systems with constant flow and variable flow, single-channel, with zone post-heating, multi-zone, dual-channel.
Autonomous conditioners.
The choice of the plant about the intended use.
The heating plant and the refrigeration plant: location and safety conditions.
The air distribution channels: sizing criteria and integration problems with the structures.
Input terminals: geometrical and functional types and characteristics.
The problems related to the diffusion of air in the environment.
6. DIFFUSION OF NOISE IN AIR-CONDITIONING PLANTS
Noise generation and distribution mechanisms in technical installations.
Determination of the sound level in disturbed environments.
Noise evaluation criteria: weight curve (A), NC, and NR indexes.
Soundproofing and noise reduction interventions are carried in the various parts of the plant.
