[46] Water cooler
With this design of cooler,
hydraulic fluid is fed through tubes over which coolant (water)
flows. The heat which is discharged can be re-used.
The operating temperature in hydraulic installations should not exceed 50 - 60ºC, since this would cause an unacceptable reduction in viscosity, leading to premature aging of the fluid. In comparison with air cooling, operating costs a higher due to the required coolant and the susceptibility to corrosion. Temperature difference of up to approx. 35ºC can be handled.