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Control, VVC plus
traditional system designs, the condenser water pump circulates the
water continuously through the system at full flow.
The temperature of the condenser water is controlled by the
cooling tower fan cycling control, a two speed fan motor or by a
cooling tower bypass valve. The
lower the return condenser water temperature to the chiller, the
lower the energy consumption of the chiller will be, within the
design limits of the chiller.
condenser pump is usually oversized for a safety margin and to
compensate for future scaling in the piping and chiller tubes.
The system is balanced with a manual throttling valve to
prevent too high a flow rate. If permitted, excess flow can erode the chillerís tubes,
degrade system efficiency and increase maintenance expense. By adding resistance to the system with a throttling
(balancing) valve, the rate of flow is reduced to the design flow
rate of the condenser.
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