Author Question: Traditional methods of capacity control for centrifugal compressors include: A) Adjustable pitch ... (Read 112 times)

NguyenJ · **on:** Jul 27, 2018

Traditional methods of capacity control for centrifugal compressors include:

A) Adjustable pitch impellers. B) Cylinder unloading.
C) Discharge outlet vanes. D) Variable inlet vanes and motor speed control.

Question 2

In order to leak test a low-pressure chiller, the chiller pressure:

A) Must be reduced to a safe level, under 150 psig.
B) Must be increased to a positive pressure less than 10 psig.
C) Must be recovered and replaced with nitrogen.
D) Should be increased by adding nitrogen.