The Circuit heat removal efficiency result provides a measure of the effectiveness of each cooling channel section in extracting heat from the mold during the molding cycle.
This quantity shows the relative efficiencies within the cooling system.
In most cases, the cooling channels are cooling the mold, and the plot values are positive. The section with the highest efficiency is assigned a value of 1. All other heat removal efficiencies are represented as a fraction less than 1.
In cases where the cooling channels are heating the mold, the plot values are negative. The section providing the most heat input is assigned a value of -1, and all other heat input efficiencies are represented as a fraction greater than -1.
The circuit heat removal efficiency values are derived from the following parameters:
In general, the relationship between the individual parameters and the heat removal efficiency are non-linear, so the overall relationship is complex. All of the above parameters, apart from the distance of the channel from the part, are available as separate, individual plots to further show their contribution to cooling efficiency.
The Circuit heat removal efficiency result helps identify which channels are extracting more heat relative to the others. Channels with a heat removal efficiency of close to zero are not participating in cooling. If these channels are located in a region where there is no heat load, then such channels can be discarded altogether.
If a cooling channel with a very low heat removal efficiency is located in a region where there is a significant heat load, you need to take measures to improve the efficiency of the channels. That is, modify the cooling system design to move the channels closer to the part, or introduce bubblers or baffles, and/or change circuit parameters such as flow rate or coolant inlet temperature.