• Thermal Power Engineering, Semester 1, position 2

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.

Refrigeration compressors (systematization, application); Reciprocating refrigeration compressors: basic elements, basic parameters of operation, operating characteristics (performance) of reciprocating refrigeration compressors, processes in an Ideal and actual compressor, volumetric efficiency, Actual compression process, Capacity control of reciprocating compressors); Rotary refrigeration compressors, twin screw compressors; Auxiliary equipment and refrigeration pipelines, Condensers: classification of condensers, analysis of condensers; Evaporators: classification, direct expansion fin-and-tube type evaporators, flooded evaporators, evaporator defrosting; Expansion devices: thermostatic expansion valve.

Auditory training: A survey of the application area of certain types of compressors; Volumetric efficiency calculation; The compressor displacement calculation; Capacity control of reciprocating compressors; Design of rotary screw compressors; Compressor performance curves; Calculation of refrigeration load of condensers, Calculation of piping, insulation, safety valves and elements of automation. Laboratory exercise: demonstration of cooling installation in an industrial plant; Design project of refrigeration system: work in groups of 5 students (for a particular object and refrigerant), calculation and selection of elements refrigeration plants.

Required exams passed: thermodynamics, the basics of refrigeration

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