Base Knowledge
Fundamentals of Thermodynamics, Fluid Mechanics, Heat Transfer, Air Conditioning and Refrigeration.
Teaching Methodologies
Topics at theoretical classes are presented through an application-driven approach, which tries to trigger discussion within the audience. “What-if” questions are extensively raised to engage students in the discussion. Students are also urged to deepen the study through self-conducted research. Moreover, each student presents a topic, followed by a discussion period. In theoretical-practical classes, problem solving is promoted to verify the knowledge level already acquired. Lab classes are grounded on software and technical catalogs of refrigeration manufacturers, to help in the assignment of designing a refrigeration plant. One or more field visits to industrial and/or commercial units are also provided.
The evaluation of the course unit comprises:
1) Final written exam (37,5%);
2) Project of a refrigeration system (25%);
3) Oral presentation of a specific topic (17,5%);
4) Written report of field visit (10%);
5) Written report of lecture (10%).
Learning Results
The main aims of this course unit are: to present the thermodynamic mechanisms that govern refrigeration applications; to distinguish the main components of refrigeration systems and how they interact to perform refrigeration; and to select main components and accessories for a refrigeration system, so that students develop engineering skills concerning refrigeration systems.
In the end of the course unit, students are expected to be able to:
integrate refrigeration fundamentals with refrigeration systems design;
characterize alternative refrigerants for the HVAC- sector;
describe and size the main components (equipment and accessories) of a refrigeration system;
know the principles governing the conservation of perishable goods and associated logistics;
calculate the heat load in refrigeration systems.
Program
Introduction
Refrigeration cycles
Refrigerants
Refrigeration systems
Refrigeration system components
Management and control
Transport and conservation of perishable goods
Heat load estimation for cold storage
Directives, standards and regulations
Internship(s)
NAO