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TRG-TRC016-EN 59
notes
period three
System Variations
Period Two discussed several standard configurations of chilled-water systems.
In addition, there are many variations available to reduce installed costs,
enhance the efficiency of the system, improve reliability, or increase operational
flexibility.
These variations are worth examining, because improving the reliability or
efficiency of the system by even a small percentage can result in a large
payback over the life of a building.
Alternate Fuel Choice
Many building owners and operators are investigating the use of fuels other
than electricity. There are several reasons for this renewed interest.
Today, the utility industry in many regions is going through some degree of
deregulation. One of the first United States locations to experience this was
San Diego, California. Due to a number of factors, the price of electricity
period three
System Variations
Chilled-Water Systems
Figure 65
Electric Utility Deregulation
price of electricity, $/kWh
price of electricity, $/kWh
0.20
0.20
0.10
0.10
0.30
0.30
May
May
June
June
July
July
August
August
September
September
San Diego, CA
San Diego, CA
2000
2000
Figure 66