Trane TRG-TRC004-EN manual Quiz, Questions for Period

Quiz

Questions for Period 1

1What is the purpose of the compressor in a refrigeration system?

2List the four primary types of compressors used in air-conditioning applications.

3What causes the suction valve to open on a reciprocating compressor?

4True or False: The intake of refrigerant vapor in a scroll compressor occurs at the outer edge of the scroll assembly and discharge occurs through the port at the center of the scroll.

5What is the term for the type of compressor that has the motor sealed within the compressor housing?

Questions for Period 2

6Assuming a constant condensing temperature, does the capacity of a compressor increase or decrease as the suction temperature decreases?

7What method of capacity control is commonly applied to scroll compressors?

8What method of capacity control is commonly applied to centrifugal compressors?

Questions for Period 3

9In a VAV DX system, the capacity of the compressor is typically controlled by sensing _____. (space temperature, supply air temperature, chilled-water supply temperature)

10In a constant-volume chilled-water system, the capacity of the compressor is typically controlled by sensing _____. (space temperature, supply air temperature, chilled-water supply temperature)

11In a constant-volume DX system, the capacity of the compressor is typically controlled by sensing _____. (space temperature, supply air temperature, chilled-water supply temperature)

12What are the two common methods of preventing evaporator frosting in a direct-expansion (DX) system?

TRG-TRC004-EN 43