After successful completion of the course, students are able to...

• understand and describe the most common applications and functions of chillers and heat pumps,
• read and understand state diagrams for ideal gases and the usual refrigerants,
• apply the first and second law of thermodynamics to a chiller system and calculate the occurring energies / energy flows and entropies / entropy flows,
• identify the most frequent cycles in the technical field and calculate occurring thermodynamic quantities,
• describe the various thermodynamic cycles for generating "cold" in the chillers and "heat" in the heat pumps from mechanical energy or heat and calculate the EES or COP,
• sizing recooling units and estimate the "performance" of anergy sources for the heat pumps,
• describe the function of compressors, heat exchangers, piping, and fittings in the refrigeration circuits,
• describe the most common applications and requirements for refrigeration systems and heat pumps (air conditioning, food preservation, heating systems, etc.).

• Description of the thermodynamic cycles of refrigeration systems.
• Discussion of cold steam engines (vapor-compression and absorption refrigeration cycle) and cold gas engines.
• Development of new refrigerants, adaptation to changed environmental creteria.
• Description of the individual components of the refrigeration systems.
• Sizing rules.
• Control technique based problems.
• Applications of refrigeration systems.

• The content of the course will be explained on the basis of presentation slides.
• The presentation slides will be provided in TUWEL.
• Calculation examples will be presented.
• The presented examples will be provided in TUWEL.
• Homework examples will be provided in TUWEL.
• Additional examples will be provided in TUWEL.
• Supplementary literature will be named. It is mostly available online.

Language: German

• For the performance assessment, written tests with calculation examples and theoretical questions are used. Subsequently, to an oral questioning will be invited.