Where is the constant flow regulator installed in relation to the heat exchanger when used with the chilled-water system?

In a chilled-water system, the constant flow regulator is typically installed downstream of the heat exchanger to ensure consistent water flow and pressure control after the cooling process has occurred. This positioning allows the regulator to effectively maintain a stable, predetermined flow rate necessary for the efficient operation of the system without interfering with the heat exchange process itself.

When installed downstream, the regulator can monitor the flow as it exits the heat exchanger and adjust accordingly to ensure proper distribution of chilled water to the system, thereby enhancing cooling performance and system efficiency. This arrangement also protects the system from issues like flow fluctuations and pressure variations caused by changes in system demand.

In contrast, if installed upstream, the regulator could affect the pressure and flow entering the heat exchanger, potentially compromising the performance of the heat exchange process. Therefore, the optimal position for ensuring effective regulation of flow in relation to the heat exchange process is downstream.