Course detail
Refrigeration and Heat Pumps
FSI-LC0 Acad. year: 2018/2019 Winter semester
The course deals with the design and construction of refrigeration devices and heat pumps. Students are gradually introduced to the issue of determining the required cooling capacity, choice of suitable refrigerant, individual components selection and overall design of the equipment. Students are familiarized with the current legislation and requirements for installation and commissioning of the proposed facility.
Language of instruction
Czech
Number of ECTS credits
2
Supervisor
Department
Learning outcomes of the course unit
The course will enable students to acquire the knowledge and skills associated with the construction of refrigeration devices and heat pumps, their installation and commissioning. After completing the course, students should be able to design a simple cooling device.
Prerequisites
Thermomechanics; Compressors, Fans and Refrigerating Plants
Planned learning activities and teaching methods
Combination of lectures and laboratory classes.
Assesment methods and criteria linked to learning outcomes
The credit is awarded for participation in seminars and after the successful defense of the semestral project.
Aims
The aim of the course is to introduce students to the design process of refrigeration systems and heat pumps.
Specification of controlled education, way of implementation and compensation for absences
Independent elaboration of a given project.
The study programmes with the given course
Programme M2I-P: Mechanical Engineering, Master's
branch M-ENI: Power Engineering, elective (voluntary)
Programme M2I-P: Mechanical Engineering, Master's
branch M-PRI: Process Engineering, elective (voluntary)
Programme M2I-P: Mechanical Engineering, Master's
branch M-TEP: Environmental Engineering, elective (voluntary)
Type of course unit
Exercise
26 hours, optionally
Syllabus
1. Introduction, repetition – refrigeration systems (single and double stage, cascade, etc.)
2. Calculation of heat load – estimation of required cooling power
3. Refrigerants – refrigerants overview (HCFC, HFC, CO2, R717, natural), selection of suitable refrigerant for selected system
4. Evaporators – design requirements / selection
5. Condensers – design requirements / selection
6. Compressors – reciprocating, scroll, screw, centrifugal
7. Lubrication – system (compressor) lubrication
8. Metering device – design, selection, presettings
9. Pipes and fittings – design, calculation of pressure losses
10. Regulation of refrigeration devices + defrosting
11. Requirements on refrigeration devices – standard EN 378 (Part 1 and 2)
12. Requirements on refrigeration devices – standard EN 378 (Part 3 and 4)
13. Cold usage (refrigeration, etc.)