• Semester 6, position 3

Achieving of competence and academic skills as well as methods for their acquisition. The development of creative abilities and practical skills which are essential to the profession. Objectives are concrete and achievable and in full accordance with the defined basic tasks and objectives of the study program.

Student acquires subject-specific abilities that are essential for the quality of professional activities: analysis, synthesis and prediction of solutions and consequences; application of knowledge in practice; linking the basic knowledge in various fields with their application to solve specific problems.

Natural and artificial Refrigeration, Application of refrigeration and heat pumps, Methods of producing Low Temperatures, Air cycle refrigeration systems, Ideal reverse Brayton cycle, Vapour compression refrigeration systems, The Carnot vapour compression refrigeration cycle, Standard vapour compression refrigeration system, Modifications of standard vapour compression cycle, (subcooling, multistage throttling, multistage compression with intercooling), Multi-evaporator system with individual compressor, Cascade systems, The specific refrigeration effects, Refrigerants, Primary and secondary refrigerants, Refrigerant selection criteria, Designation of refrigerants.

Auditory training: thermal insulation, selection of insulation materials, the diffusion of water vapor through thermal insulation layer, vapour barrier, calculation of refrigeration load, thermodynamic analyses of refrigeration cycle; Laboratory Exercise: Demonstration of refrigeration devices in industrial plants; Design project of refrigeration system: work in groups of 5 students (for a particular object and refrigerant), calculation and selection of insulating structures, refrigeration load, thermodynamic calculation of refrigeration cycle.

Required exams passed: Thermodynamics B; desirable Passed Exam: Fluid Mechanics B

Handouts which are available in advance for each week of classes

Total assigned hours: 75

New material: 20
Elaboration and examples (recapitulation): 10

Auditory exercises: 10
Laboratory exercises: 5
Calculation tasks: 0
Seminar paper: 0
Project: 15
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 5
Test: 5
Test: 0
Final exam: 5

Activity during lectures: 0
Test/test: 30
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 0
Project: 20
Final exam: 50
Requirement for taking the exam (required number of points): 26

M. Markoski: Refrigeration, Mechanical Engineering, 2006; Handouts, 2023