Water-cooled hydraulic heat exchanger

Figure 7.26 is an illustration of a common type of water-cooled heat exchanger used in hydraulic systems.

This is typically a shell and tube-type heat exchanger. The cooling water is pumped into the heat exchanger and flows around the tube bank. The hydraulic fluid, which is to be cooled, flows through the tubes. While flowing through the tubes, the fluid gives away heat to the water, thereby reducing its temperature.

Advantages of water-cooled heat exchangers are:
1. They are very compact and cost-effective
2. They do not make noise
3. They are good in dirty environments.

Disadvantages associated with water-cooled heat exchangers are:
1. Water costs can be expensive
2. Possibility of mixing of oil and water in the event of rupture
3. Necessity for regular maintenance to clear mineral deposits.


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