Recognize the various types of commercial refrigeration systems and their applications. Explain how and why ice banks are used in certain refrigeration systems. Explain how and why air curtains are used in commercial refrigeration systems. Explain how quick chillers and blast chillers differ from other commercial refrigeration systems. Describe the two types of water coolers. Describe the different types of evaporators found in commercial ice machines. List some of the industrial applications of refrigeration systems.

Identify the different types of refrigerant metering devices, evaporators, compressors, and condensers used in transportation refrigeration systems. Summarize the operation of various expendable refrigeration systems. Explain how thermoelectric couples produce heating and cooling using electricity. Summarize the operation of vortex tubes, steam jet systems, and refrigerant jet systems. Describe the operation of a basic Stirling refrigeration system. Explain how thermoelectric couples produce heating and cooling using electricity. Summarize the operation of vortex tubes, steam jet systems, and refrigerant jet systems. Describe the operation of a basic Stirling refrigeration system.