FRIGOFLUID S.R.L.

A refrigeration system is more than a single chiller: heat exchangers, hydraulic connections, additional cooling devices also come into play to support your production process.

RW ax systems for industrial refrigeration of process fluids (water, water and glycol) are air-cooled: the only resource used is therefore electrical energy, a decisive advantage in contexts where it is advisable to save water (because of its cost or scarcity). The IP54-grade machine protection (against dust and other agents) facilitates their installation in outdoor environments, which is also possible at temperatures up to +40°C and above, at the customer’s request. RW ax liquid chillers from Frigofluid are suitable for achieving average fluid outlet temperatures (between +1°C and 20°C), with excellent control of the resources used for their operation.

Low outlet fluid temperatures (water or water and glycol, down to -8°C) characterize RW ax LT liquid chillers: air condensation ensures that they use are electrical energy, and not water, for their operation: a resource that is then optimized by the electronically controlled “brushless” type axial fans. Up to +40°C ambient temperature allowed in standard execution.

The secret of this system is the combination of the refrigeration section and the free-cooling section depending on the time of day and year: the first mode allowed by these liquid chillers takes advantage of the normal operation of a refrigeration circuit, the second allows cold outside air to be directly conveyed to the fluid to be cooled: maximum efficiency, minimum energy use due to the clear separation between the two sections.

ERW ax systems for industrial refrigeration of process fluids (water, water and glycol) are air-cooled units, using EC (Electronic Control) axial fans. This range includes a series of models with cooling capacities from 2.1 kWf up to 595 kWf. Three different versions are provided for different outlet fluid temperature ranges, agreed with the customer during the design phase. The entire range uses refrigerant with GWP 631.

Liquid chillers for low temperatures, also in outdoor environments The RW CW series of process fluid coolers (water, water/antifreeze) are water-cooled and operate with environmentally friendly gas compression. They allow cooled liquid temperatures between -8°C and +20°C. In standard design, ambient temperatures of up to +40°C are permissible, but in the “RW ax/HTA” version even higher ambient temperatures can be achieved. IP54 degree of protection as standard, allowing outdoor installation without a protective roof.

RAW/E liquid coolers (water, water/antifreeze) operate through a closed circuit, consisting of a finned coil crossed in countercurrent by ambient air. Due to the sizing of the coil, it is possible to achieve process fluid temperatures close to the temperature of the intake air. They are industrial chillers designed for fluids between 0°C up to 70°C, with external temperatures between -10°C and +50°C: cooling powers available as standard from 64 kWf up to 782 kWf, considering a 10°C difference between ambient air and supply water. “RAW” series chillers are environmentally friendly machines: the fluids used in the cooling process are simply water/antifreeze (fluid to be cooled) and ambient air (cooling fluid). In addition, the use of high quality materials allows the achievement of high efficiency values (ratio of kWf rendered in cooling to kW absorbed in power consumption).

The PAD-V adiabatic system is the optimal solution for increasing the efficiency of air systems, with capacities from 75 to 1,100 kW. Dry operation during cold periods: ambient air is drawn in and conveyed to the heat exchange coils (where the fluid to be cooled passes through): no water in the circuit, as during standard dry cooler operations. Energy use is also optimized by electronically modulated fan speeds based on temperatures. Adiabatic operation during hotter periods: outside air passes through the humidifier pack to be pre-cooled, before being conveyed to the finned coils and performing its cooling function: efficiency is increased. This also makes it possible to work at lower ambient temperatures.

FT water temperature controllers make it possible not only to cut down on the use of electrical power for heating (in fact, the heating elements remain off during steady-state operation), but they also make it possible to limit the cooling power spent on cooling by self-stabilizing through a process called Autotuning. This system also saves resources (water and energy) compared to units without them. They are designed to condition molds and cylinders for various industrial processes, including plastics and rubber molding and extrusion, and in the paper industry.

Often the main critical issue for molding industries is not achieving the temperatures needed for their processes, but maintaining them over time. Hence the usefulness of temperature control units that not only send the fluids needed to do the job up to temperature, but are capable of subsequent self-tuning. This is the way FTT DC water temperature controllers operate, which wrap direct cooling to stabilize fluid grades after the desired temperature has been reached. This requires integration with a source of cooled water: a simple well or a chiller or cooling system (chiller or dry cooler). Our engineers are available to determine which cooling solution is the most effective and economical. Not only that. The management of these successive heating-cooling steps is easier when done with a touch screen: a feature with which FTT DC temperature controllers are equipped. Units in the FTT category are specially designed to condition molds.