Heat exchanger circulating water

Reply to 1# Pursuing90: If it is necessary to shut down the heat exchanger, in theory one should first turn off the water supply, but in practice this doesn’t make much sense; therefore, most companies do not set any specific requirements in this regard. If adjustment is needed: theoretically, the water flow should be turned off, but in practice, depending on the specific circumstances (when an extremely low water flow rate is required), it is also possible to adjust both the water inflow and outflow simultaneously

Proper operation will help extend the service life of this device. (1) When starting the operation, if the pressures of the two media are different, the valve on the low-pressure side should be opened slowly first, followed by opening the valve on the high-pressure side. When opening the valve on the same side, the outlet valve should be opened first, followed by the inlet valve. If the heat exchange system is a vapor-liquid exchanger, first open the liquid-phase inlet and outlet valves, then open the gas-phase valve. (2) During shutdown operation, the valve on the high-pressure fluid side should be closed slowly first, followed by the valve on the low-pressure fluid side. When closing the valve on the same side, the inlet valve should be closed first, followed by the outlet valve. If the heat exchange system is a vapor-liquid exchanger, first close the vapor-phase valve, and then close the liquid-phase inlet and outlet valves. ---------Excerpt from the SECESPOL Heat Exchanger User Manual