TECHNICAL COMPARISON

HEAT-COOL-COMBINATIONS TECHNICAL COMPARISON The application of Heat-Cool-Combinations will result in rapid and effective heating and cooling coupled with energy-efficiency. With its compact design and heating elements inclosed in high heat conductive aluminium small temperature differences along the screw barrell can be achieved. Conventional systems such as HKK (ceramic) or HKC (ceramic with copper cooling fins) give fast heat-up times but without uniform temperature distribution along the heated area as achieved by the HAK system. Stresses and material deposits are reduced or even avoided....

HEAT-COOL-COMBINATIONS TECHNICAL COMPARISON Cooling energy demand cooling portion at 200°C with internal heating element cooling portion [%] In the cooling cycle (see fig. on left) high energy for cooling is required with the convential HKK compared to the new HAK. In order to maintain the set temperature constant, the HAK requires less energy consumption compared with conventional ceramic-insulated HeatCool-Combinations. The minimum temperature can be maintained even in difficult areas and will also help to increase the material throughput. Temperature uniformity in the screw barrel The uniform...

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