Covers all aspects of using ammonia as a refrigerant. Describes both single-stage and two-stage ammonia systems. Explains the importance of accumulators and intercoolers in ammonia refrigeration. Concludes with coverage of liquid recirculation system operation. Learn More>>
Explains the effects of noncondensables on an ammonia system and the importance of their removal. Covers a wide range of piping considerations-sizing, flow rate, pressure drop, and others. Concludes with a thorough coverage of safety codes and programs, including.. Learn More>>
Begins with coverage of reciprocating compressors-their design, lubrication, efficiency, and application. Covers rotary vane compressor operation and limitations. Details screw compressors and the operation of related drive, lubrication, capacity control, and safet Learn More>>
Covers gravity feed, overfeed, dump trap, CPR, and DX supply systems. Describes evaporator and evaporative condenser design, selection, and operation. Discusses various defrost systems-hot gas, electric, water, and glycol spray. Examines stop, shutoff, relief,... Learn More>>
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HVAC&R: Air Handlers - Mechanical Systems is part two of the HVAC&R seven-part training series. The course describes basic air handler functions and operations, including the functions of the supply and exhaust sides of the system, fans, dampers, filters,... Learn More>>
Covers the function, construction, and operation of both air- and water-cooled condensers and related devices. Discusses cooling towers and spray ponds, including maintenance and troubleshooting. Includes a lesson on evaporative condensers. Concludes with a discuss Learn More>>
Introduces the need for control, control methods, and system basics. Includes information on self-powered, pneumatic, hydraulic, electric, and electronic systems. Covers various sensors and controlled devices. Covers the basics of two-position, floating, and propor Learn More>>
Begins with coverage of airflow basics, including how air moves, types of airflow, and pressure relationships. Compares and contrasts various types of fans and fan motors. Examines types of ducts, fittings, connections, insulation, and terminal devices. Covers vari Learn More>>
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