Turbulent Flow Basics
In a mold cooling system Turbulent water flow is much more efficient at removing heat than laminar flow. After turbulent flow is achieved, increasing the flow rate further yields more cooling benefit, but at a declining rate compared to water flow rate. The graph of "Steel Temperature vs. Coolant Flow" illustrates this point.
Often mold operators try to maximize the flow of water through their cooling systems to ensure turbulent flow. Doing so increases energy costs for pumping more water than may be necessary. This practice can also limit the amount of cooling water available for cooling other molds on the same cooling system circuit. A better practice is to ensure turbulent flow and sufficient cooling by using flow meters and FCI (Fluid Characteristic Indication) Technology. In this way an efficient cooling process can be realized using the minimum pumping capacity and energy.