In a shell-and-tube cooler, the heat medium flows sequentially through various baffle channels from the inlet pipe on the shell to the outlet pipe. The coolant itself uses a two-pass flow pattern: the coolant enters one half of the cooler tubes through the inlet via a water distribution cover, then flows through the return cover into the other half of the cooler tubes, entering the other side's water distribution cover and outlet pipe. During this two-pass flow, the coolant absorbs the residual heat released by the heat medium and is discharged through the outlet, maintaining the working medium at its rated operating temperature.
The first type of hydraulic press cooler is the shell-and-tube type, which includes various configurations such as double-tube, vertical, horizontal, and floating head types. This type is characterized by water flowing through the inside of the tubes, while oil flows through the gaps between the tubes. Baffles in the middle deflect the oil flow, and the two-pass or even four-pass flow pattern makes its cooling effect more intense.