Ice storage systems ___________________ ____________.
A. can reduce chiller tonnage by 40 to 50 percent
B. don't save energy directly, but they improve the efficiency of the power utility's delivery of power
C. shift electric load to off-peak periods
D. all of the above
Question 2
Vortex vanes on an electric centrifugal chiller ___________________ _.
A. provide a way to coast the compressor wheel to a stop
B. prevent compressor surging
C. help control compressor capacity
D. separate out non-condensable gasses