361-0500/01 – Refrigeration Systems and Heat Pumps (CHZ_M)
| Gurantor department | Department of Power Engineering | Credits | 5 |
| Subject guarantor | doc. Ing. Mojmír Vrtek, Ph.D. | Subject version guarantor | doc. Ing. Mojmír Vrtek, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2013/2014 | Year of cancellation | 2016/2017 |
| Intended for the faculties | FS | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Students learn to understand the problems of Refrigeration Systems and Heat Pumps.
Students will be able to:
- Explain and define basic concepts discussed in the fields of
- Clarify the links and connections within the given fields and external relations to other areas of energy
- Describe the basic technical equipment used in those fields and explain their principles
They will receive:
- An overview of the terminology
- An overview of the basic technological processes of transfer and transform energy in relevant areas
They will be able to:
- Perform basic energy balance and capacity calculations in the areas of the issue
- Select appropriate ways and methods to achieve the desired objectives in practice
Teaching methods
Lectures
Tutorials
Summary
The subject deals with refrigeration technology and heat pumps. Students will acquire advanced knowledge and skills in the field of theory and practical realization of reversed thermodynamic cycles, namely compressor and sorption refrigeration cycles, in the field of properties of working substances - refrigerants and antifreeze mixtures incl. their ecological aspects.
Further, the subject deals with the possibility of using heat pumps for utilisation of low-potential heat.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
Another demands for student are not.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Introduction, purpose and importance of refrigeration and heat pump technology, cryogenics. Phase change materials.
2. Methods of achieving low temperatures, the basic theory of refrigeration cycles. Comparative cycles.
3. Steam flow single stage, with the internal heat exchange. Supercritical cycle.
4. Binary mixtures, evaporation, freezing. Heat transfer fluids.
5. Refrigerants - calculation bases. Characteristics of the main types of refrigerants.
6. Two and multistage refrigeration cycles, cascade conection.
7. Gas cycles.
8. Cycles for the liquefaction of gases.
9. Absorption refrigeration cycles - ammonia - water.
10. Absorption refrigeration cycles - water - lithium bromide. Adsorption cycles.
11. The basic elements of refrigeration circuits - compressors, heat exchangers, control, isolation.
12. Heat pumps - types.
13. Connection to heating systems. Proposal for bivalent point and operating mode.
14. Evaluation of the benefits heat pumps in terms of energy, economic and environmental.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction