Closed Circuit Cooling Water System

Due to the higher maintenance requirements of an open system this type may have a higher price over time compared to a lower maintenance closed circuit system.

Closed circuit cooling water system.

With very real concerns about the higher water consumption of open loop systems closed loop cooling technology is gaining broader appeal every year. Cooling towers extract waste heat to the atmosphere through the cooling of a water stream to a lower temperature. A closed loop cooling system can exchange heat with the main cooling water system in conventional tube and shell heat exchangers or plate and frame heat exchangers. Certain processes require a closed loop whereby the process water for cooling does not come in contact with the atmospheric air.

But often overlooked are auxiliary closed cooling water ccw systems which also serve vital functions. Failure of a closed system has the potential to shut down a portion if not all of the plant. A closed circuit system keeps the water completely enclosed inside pipes. The process involves cooling the water inside the tubes in addition to a refrigerant.

Heat absorbed by the water in the closed system is normally transferred by a water to water exchanger to the recirculating water of an open recirculating system from which the heat is lost to atmosphere figure 32 1. The full closed cooling system is designed to circulate cooling water through the block and exhaust maniolds. Our closed loop water treatment solutions address the problems of corrosion fouling biofouling and scaling that. Over the past decade evapco has pioneered innovation in the closed circuit cooler market along with advancements and refining of tried and true open loop equipment options.

Closed circuit cooling systems. Closed circuit cooling towers and open circuit cooling towers. As shown in the diagram below raw water is picked up through the drive pickup or through a hull mounted pickup if present it will pass through a sea strainer to clean debris out of the water. Both types of towers serve the same purpose but they go about cooling the water in different ways.

The addition of fill to the traditional closed circuit cooling tower design reduces evaporation in the coil section reducing the potential for scaling and fouling. Bac s combined flow closed circuit cooling towers utilize parallel flow of air and spray water over the coil and crossflow air water flow through the fill. This prevents the cooling water from picking up particles that may not get filtered or even dissolved gases. In a closed system water circulates in a closed cycle and is subjected to alternate cooling and heating without air contact.