Design and optimisation of heat pump plants, including heat sources for such plants are dealt with in detail. Ice banks and sorption processes are covered. Methodologies used in computing of the cooling load, as well as in optimising insulation thickness and different mechanical components are analysed. Testing methods and safety standards for refrigeration systems are discussed in class and in laboratory exercises. The course also includes study visits.

Student responsibilities:

Attendance of lectures, seminars and practical work. Preparation of final project.

Grading and evaluation of student work over the course of instruction and at a final exam:

Student work is valued through engagement in lectures. Also through finishing their tasks on practices and lectures.

Upon successful completion of the course, students will be able to (learning outcomes):

1 . Calculate and dimension basic elements of technical systems and processes.

2 . Identify impacts and describe interactions between elements of technical systems and processes.

3 . Decompose problems into simpler tasks and propose steps to solve them.

4 . Produce technical documentation using modern computer programs.

5 . Apply appropriate mathematical and engineering methods for modelling basic technical systems and processes in order to solve simple problems in the field of mechanical engineering

Lectures

1. Practical work: System charging with refrigerant. Recycling og refrigerants.

2. Refrigeration load calculations and procedures.

3. Refrigerated facility design.

4. Cold storage room with controlled atmosphere (fruit and vegetable)

5. Storage of packed and unpacked goods.

6. Food refrigeration. Refrigeration in dairy industry, beer and beverages production. Industrial cooling.

7. Cascade refrigerating system

8. Refrigeration components design and sizing.

9. Cold energy storage design. Ice production.

10. Basic of absorption cooling

11. Thermodynamical validity of absorption cycles

12. Heat sources for heat pumps. Running of the heat pumps.

13. Ground source heat pumps. Solar assistant heat pumps.

14. Heat pump seasonal energy balancing (Methodology for calculating seasonal energy efficiency ratio via HRN EN 15316-4-2)

15. Study visit.

Exercises

1. Practical work: System charging with refrigerant. Recycling og refrigerants.

2. Cold storage room cooling load calculation.

3. Practical work: Cold store

4. Shell & Tube evaporator design

5. Finned coil evaporator design

6. Finned coil condenser design

7. Shell & Tube condenser design

8. Laboratory exercise - cold storage room transient simulation.

9. Design of cold energy storage systems.

10. Design of absorption refrigerating unit

11. Calculation of solar driven absorption refrigeration unit.

12. Laboratory exercise - Ground source heat pump

13. Laboratory exercise - Solar assistant heat pump

14. Calculation of seasonal performance factor - energy efficiency ratio (HRN EN 15316-4-2)

15. Study visit.

Compulsory literature:

1. Refigeration - Solved examples, R. Ciconkov, University Sv Kiril i Metodij, Skopje, 2001, p. 0-0

2. Industrial Refrigeration Handbook, W.F. Stoecker, McGraw-Hill, 1998, p. 0-0

6. Introduction to refrigerating engineering, Part I&II, E. Granryd, Royal Institute of Technology, Stockholm, 2005, p. 0-0

7. Refrigeration systems and applications, I. Dincer, M. Kanoglu, Wiley, 2010, p. 0-0

8. ASHRAE Handbook, Refrigeration,, , ASHRAE, Atlanta, 2014, p. 0-0

Recommended literature:

3. Projektierung von Kälteanlagen, Breidert, C.F. Muller, Karsruhe, 2003, p. 0-0

4. Der Kälteanlagenbauer, Breidenbach, C.F. Muller, Karsruhe, 1990, p. 0-0

5. Pohlmann Taschenbuch der Kältetechnik, Maake-Eckert, C.F. Muller, Karsruhe, 0000, p. 0-0