The diameter of the cold runner should not change over the entire length of the channel to avoid an interruption of flow would do no good heat exchange.
It should divide into multiple channels cooled cooling loop. Do not designed to cool the channel length is too long leads to loss of pressure and temperature as the temperature difference between the input and output rose more than 3 ° C
Field coolant to flow continuously and the temperature brought from home high temperature to low temperature where
the cooling system must equal the negative mold 2 side (Cavity) and the positive mold (Core): so often in the Cavity easy road layout more water due to the many vacant more , while the core has less vacant due to system pushed occupancy company, so the design of the Core waterline more difficult, often thinking of putting water lines cross each other. The goal of the design is how the water flow through the Core and Cavity equal to
the input temperature and output in as little difference as possible (T = Tra - Tvao), T guarantee between 1 ÷ 5 ° C. The amount of heat is released out of the mold is proportional to the flow velocity, wanted to release heat more quickly, how to increase the flow velocity through the hydraulic pump system ??
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