Heat transfer coefficient measurement
The Heat Transfer Coefficient (HTC) of spray nozzles is decisive for the design for secondary cooling system. Lechler measures the HTC by means of the “Moving Nozzle Test”, in which a steel plate is heated to 1200 °C in inert gas and then cooled down to the temperature of the sprayed water.
The objective is to simulate spray cooling of a moving steel strand.
For very larger nozzles with a higher cooling capacity required for HARD-HARD® INTENSIVE COOLING Lechler utilizes the liquid core HTC measurement method.
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