They are typically used in chilled water systems, often on the variable primary loop. The flow rate is used to provide information on the chilled water system, and the flow meter is connected to a bypass valve which is used to bypass flow back to the chillers.
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Flow meters are also found on Hot Water or boiler water systems. Flow switches may be used instead of a flow meter.
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For HVAC systems with cooling towers, flow meters are often installed in the water supply and return lines. Monitoring the flow of water through the cooling tower is important for maintaining optimal heat exchange efficiency.
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Flow meters can also be placed in circuits involving heat exchangers to measure and control the flow of fluids, ensuring efficient transfer of thermal energy between the air and the fluid.
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