75444 - Building Energy and Hvac Systems M

Learning outcomes

This Course deals with the design of the main components of Heating Ventilating Air Conditioning (HVAC) systems on the basis of National and international Standards. 

 

Course contents

Cooling load calculations. Dynamic behaviour of an envelope component. Complex temperature and heat flux. Dynamic U-value. Weather data for HVAC systems. Building Physics: energy balance of a room. CARRIER method. Solar factor and shading coefficients for transparent elements. Solar radiation gain and artificial lighting terms. Equivalent temperature difference. Evaluation of the latent heat. Transfer function method. ASHRAE CLTD method. Italian standard UNI-TS 11300-1: evaluation of the summer energy need of a building. Energy saving and cooling plants. Shading design.  Use of dynamic softwares for the evaluation of energy savings.

Air-Conditioning systems. Classification of Air-Conditioning systems. Behaviour of heating and cooling heat exchangers and their control systems. By-pass factor. Humidifiers. All-air Systems. Multi-zone and single-zone systems. Design of VAV systems. Applied Heat Pump and Heat Recovery systems. Free cooling. Air-and-Water systems. Indoor air quality. Duct design and Space air diffusion. Engineered Refrigeration Systems. Italian Standard UNI TS 11300-3: efficiency of cooling systems.

Readings/Bibliography

ASHRAE Handbook "Fundamentals" (SI edition)

ASHRAE Handbook "HVAC Systems and Equipment" (SI edition)

Pdf of the complete set of slides used during the course.

Teaching methods

Each lesson (in Italian) covers both theoretical and practical aspects. At least, one numerical example is shown for each topic.

Lessons are made by using slides (powerpoint).

Assessment methods

The exam is composed by two tests:

1) one written test (a numerical solution of a design problem)

2) one oral test

 

Teaching tools

Lessons are made by using slides (powerpoint).

A pdf copy of the slides (in Italian) is available for UNIBO students at IOL.

Office hours

See the website of Gian Luca Morini