Oct 21, 2020  
2020-2021 NOVA Catalog 
    
2020-2021 NOVA Catalog
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AIR 122 - Air Conditioning and Refrigeration II (4 CR.)


Prerequisite(s): AIR 121 . Studies refrigeration theory, characteristics of refrigerants, temperature and pressure, tools and equipment, soldering, brazing, refrigeration systems, system components, compressors, evaporators, and metering devices. Presents charging and evaluation of systems and leak detection. Explores servicing the basic system. Explains use and care of oils and additives and troubleshooting of small commercial systems. Lecture 3 hours. Laboratory 3 hours. Total 6 hours per week.



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