Low Energy Cooling
The cooling water being circulated by the industrial cooling system absorbs the process heat which then passes through the chiller, cooling tower or air blast cooler to be rejected to the atmosphere. 
With energy costs as high as they are, there are various ways of recovering spent energy, particularly in the case of chiller whose energy consumption in kW terms, can be as much as 30% of the cooling capacity.
One possibility is to include within the industrial cooling system, a free cooling system, or free cooler, which pre cools the warm water returning from the process, utilising the low ambient temperatures prevalent for a high proportion of the year. This dramatically reduces the running time of the chiller and therefore its running costs.
Another possibility is to install within the chiller a de-superheater, or recuperator, a shell and tube or plate heat exchanger which transfers heat from the chillers refrigeration circuit to a water stream which can be used for various hot water applications.