1-Classifies compressors used in commercial refrigeration systems,knows their types ,defines their structures and working principles. 2-Recognizes different types condensers (air cooled, water cooled and evaporatif) and cooling towers. 3-Lists the structure, types and applications of evaporator to, explains the melting ice methods used in them and how to apply thermodynamics in evaporators. 4-Knows the structure, type application areas, selection criteria and working principles of expansion devices. 5-Recognizes and classifies different types of commercial cooling devices, their structure, properties, application areas. 6-Knows the materials used in building storages where productsto be kept and the proper cooling system to be used. 7-Knows basic and assisting elements and technical features of fast cooling system. |