Cooling module, cooling assembly, cooling system, method, hot-rolled metal strip-shaped product, and use

A cooling module of a cooling device for cooling a hot-rolled metal strip-shaped product using a coolant (20), the cooling module comprising:

• at least one cooling bar having comprising a coolant chamber and a plurality of coolant outlet pipes that are connected to the coolant chamber so as to fluidically communicate therewith and each of the plurality of coolant outlet pipes define at least one coolant outlet opening for applying the coolant to the strip-shaped product;
• at least one coolant feed connected to the coolant chamber so as to at least indirectly fluidically communicate therewith, the coolant feed being configured to be connected to a coolant reservoir so as to at least indirectly fluidically communicate therewith, the coolant reservoir being configured to provide a pressure difference between the coolant reservoir and the coolant outlet opening;
• and
• at least one coolant valve, the coolant valve being arranged between the coolant feed and the coolant chamber;
• the cooling module further comprising, under the influence of the pressure difference, time-variant behavior of a coolant rate in the coolant outlet opening when the coolant valve is fully opened in a step-like manner, which behavior can be described using a time-variant step function comprising a delay time and an equalization time;
• wherein
• the sum of the delay time and the equalization time is less than or equal to 3.0 s.