AZ ROC C-49 Industrial Refrigeration Practice Questions - Arizona ROC C-49 Industrial Refrigeration (Commercial) Examination Exam

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What are the two primary thermal functions of a flash-type intercooler in a two-stage ammonia (R-717) refrigeration system?

To condense high-stage discharge gas and warm low-stage liquid feed. To subcool high-pressure suction gas and heat low-stage compressor oil. To generate superheated vapor for hot gas defrost and drain high-side receiver oil. To desuperheat low-stage (booster) compressor discharge gas and subcool liquid refrigerant feeding low-stage evaporators.

Correct Answer:

To desuperheat low-stage (booster) compressor discharge gas and subcool liquid refrigerant feeding low-stage evaporators.

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