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For decades, the central cooling system has been the most common solution for industrial process cooling. It is also known that these systems have a strong impact in terms of productivity, running costs and environment. The machine-side chillers, compact units designed specifically to serve each process independently, guarantee precise and efficient cooling, also providing greater stability during the process phases. They are used in various industrial sectors such as: injection, blow molding and extrusion of plastic materials, metals injection, processing and bottling of beverages, chemical, pharmaceutical and other processes.
Over 35,000 units installed worldwide (Microgel).
On board machine portable chillers are units for controlling the temperature of processes, they are cooled with water coming from an external cooling system (generally an adiabatic cooler).
They consist of:
These units allow to control the temperature of the process fluid from 0 to 90 °C (190 ˚F). They can work both in heating mode, through electric resistances, and in cooling mode. Cooling in turn can take place by activating the built-in chiller or of the water from the external cooling system.
Each unit can work in 3 different ways:
During this phase the electric resistances are activated which raise and maintain the process temperature according to the production requirements.
When it is necessary to cool, the controller can activate the chiller built into the unit, which independently produces chilled water which is then supplied to the temperature control zones; these, thanks to the automatic control valves, keep the temperatures set within the selected range with high precision.
In the event that, during the cooling phase, the water temperature (coming from the external cooling system) is lower than that required by the process, the chiller compressor is automatically choked or turned off and cooling is performed directly by the external system by means of the automatic Free-Cooling valve.
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