COOLING (REFRIGERATION)

Holder: prof. dr. Andrej Kitanovski

Assistant: asist. dr. Primož Poredoš

Lecturer: prof. dr. Alojz Poredoš

Semester: Winter

Language: English

ECTS: 5 ECTS

Prerequisites: Thermodynamics, Heat Transfer

 

Schedule:

Lecture: /

Classroom exercises: /

Laboratory exercises: /

 

Contents:

• Introduction, historical overview, basic definitions
• Refrigeration thermodynamics, processes, cycles and systems
• Operating conditions and energy efficiency
• Refrigerants and environment
• Refrigeration technologies and system components
• Vapor compression refrigeration
• Sorption refrigeration (absorption, adsorption)
• Gas refrigeration systems (Stirling, Thermoacoustic, Vortex tube, Pulse tube, Brayton, Joule-Thomson, Other gas systems)
• Solid state refrigeration (thermoelectric, thermionic, caloric, others)
• Steam-jet and ejector refrigeration
• Other and alternative refrigeration
• Refrigeration and applications
• Food refrigeration and freezing
• Industrial refrigeration
• Supermarket refrigeration
• Refrigeration in transport
• Electronics
• Low temperature
• Military and space applications
• Medicine and other special applications
• Heat pumps
• Fundamentals of design for refrigeration systems
• Two-, three-stage and cascade refrigeration processes
• Sorption refrigeration
• Heat pumps

Literature:

• Ibrahim Dincer, Mehmet Kanoglu; Refrigeration Systems and Applications; 2011; John Wiley & Sons
• Reinhard Radermacher, ‎Yunho Hwang; Vapor Compression Heat Pumps with Refrigerant Mixtures; 2005; CRC Press
• Keith E. Herold, Reinhard Radermacher, Sanford A. Klein; Absorption Chillers and Heat Pumps; 1996; CRC Press
• Notes from lectures and exercises
• Slides from lectures and unsolved exercises

Lectures and exercises:

• Lectures: 30 hours
• Classroom exercises: 14 hours
• Laboratory exercises: 16 hours
• Classroom exercises required attendance: at least 80%

 

Grading:

1. Prerequisites for obtaining a final grade are at least 80% attendance at the classroom exercises
2. Final grade at Cooling (Refrigeration) course consists of theoretical and exercises parts

Colloquiums:

• 2 colloquiums * during the semester
• Colloquium consists of theoretical and exercises parts, which are evaluated separately

*All students who attend the course Cooling (Refrigeration) for the first time in Academic year have the right to take the midterm exam (colloquium).

Assessment criteria (Colloquiums and exams):

Percentage	Grade
< 51	Negative 5
51 < 61	6
61 < 71	7
71 < 81	8
81 < 91	9
> 91	10

 

The final exam is obtained based on the success achieved with both colloquia:

• Average percentage of theoretical parts of both colloquiums
• Average percentage of exercises parts of both colloquiums
• However, colloquiums must not be scored with less than 40%

An example of final grade:

	Example A	Example B	Example C
I. colloquium – theory	73	62	30
II. colloquium – theory	87	40	80
Average	80	51	55
Grade	8	6	negative 5

 

3. The evaluation can be improved in 2 ways. Method 1 allows you to take part in a corrective colloquium*, which always takes place on the 1^st available exam date at the end of the course. Details about the correction colloquium are provided by the assistant at the beginning of the course. Method 2 consists of writing the entire exam.

*all students who have attended the Refrigeration (Cooling) course for the first time during the academic year have the right to a corrective colloqium

4. Exams and colloquiums at this lecture are carried out in accordance with the FS UL Study Order.