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TRG-TRC016-EN 49
period two
Chilled-Water System Design
notes
A variation of the multiple-pump configuration is to use separate pumps to
deliver water to specific, dedicated loads. An example is a chilled-water system
serving a college campus. Separate distribution pumps supply water to the east
(A), west (B), and central (C) portions of the campus. A primary advantage of
this configuration is flexibility. Expanding the system can be achieved by simply
adding another distribution pump to the existing plant and connecting it to the
piping that runs to the new building.
A variation of this multiple, dedicated pump configuration is often called
distributed pumping. It is sometimes used in very large systems that serve
multiple buildings. In a distributed pumping system, a dedicated distribution
pump is located out in the system at each building, instead of all the pumps
being housed in the chiller plant. This configuration offers the potential for
additional pump energy savings, because each pump only needs to pump the
water required for the building it serves.
Multiple Distribution Pumps
distribution
distribution
pumps
pumps
b
y
p
a
s
s
p
i
p
e
b
y
p
a
s
s
p
i
p
e
supply
supply
to loads
to loads
return
return
from loads
from loads
A
B
C
A
B
C
Figure 55