A chiller can be used to re-circulate the cooling water that is used by the intensifier's heat exchanger. It cools the water and then sends it through the heat exchanger again, creating a closed loop. A chiller is most effective in worth considering in a few situations in particular:
<ul>
 	<li>Warmer climates where the efficiency of the heat exchanger may be reduce</li>
 	<li>Facilities that cannot send any water to a drain</li>
 	<li>Parts of the country where there is a water shortage, or if the cost of water is high, because a 50 HP pump can use up to 5 gpm for cooling the hydraulics</li>
</ul>
The chiller will only reuse the cooling water; you will still be putting approximately 1 gpm with a 50 hp pump of fresh water through the cutting head, which will not be reused with the chiller.

Incoming water for the intensifier should also be maintained at 70° F (21° C) or cooler for best high pressure seal life. If this temperature cannot be maintained, then the chiller can also be used for this water.