Trane TRG-TRC016-EN manual Multiple Distribution Pumps

period two

Chilled-Water System Design

notes

Multiple Distribution Pumps

distribution pumps

return from loads

supply

toloads Figure 54

Another advantage of the primary-secondary system is that the production loop is not affected by the distribution pumping arrangement.

For example, multiple distribution pumps can be used to vary the flow within the distribution loop. Providing variable flow through the application of multiple pumps, or through variable-speed drives on one or more pumps, is more energy efficient than simply riding the pump curve. It also provides greater system redundancy.

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