AIR OIL EXCHANGERS
- Self conteined cooling units
Self conteined cooling units
Since water resources being not sufficiently available, more and more frequently it becomes indispensable to cool the oil
with air. In some cases it is not possible to connect the air-oil heat exchanger on the oil’s return line due to the presence
of pressure picks in the circuit. This is why we were forced to realize a separate circuit with autonomous circulation
pump, separate pipes, thermo-switch and electric circuit wiring.
For such cases, which are oftener and oftener, Sesino technicians have foreseen to design and launch into series
production self-contained cooling units of RAS series, which in the best way performs the task of cooling the oil
independently from primary hydraulic system of presses, injection molding machines, machine tools stations and other
types of hydraulic equipment.
RAS autonomous cooling groups are made by an air-oil cooler, a ventilator fitted with a power-driven pump and a
thermal adjustable electronic switch.
Trough a electric cabinet assembled with the group and an adjustable electronic switch and it’s thermostatic probe, it’s
possible to regulate the desired temperature of oil in the reservoir .
Generally, the oil temperature is set between 30°C and 90°C, in any case the setting temperature should be over than
environment temperature.
Maximum working pressure inside the standard cooling element is 10 bar.
The group is made with an high quality components, in order to guarantee a long life time and a low noise level.
One of the actual big problems is the energy saving. Using water for the cooling purposes we loose the heat that oil has
give to the water.
If we use the air emerging from RAS group it’s possible to make re-use of the heat donated by oil by warming the area
where the RAS is installed.
Presently, the cost for water industrial usage are very high, and some companies are forced to install a closed loop
chillers for water refrigeration and the majority of them are refrigeration machines.
Energy consumption in these cases is considerably high and normally power waste is about 30%.
With RAS group series application it’s possible to decrease the energy consumption at 6%, with a considerable energy
saving and consequently less working cost, plus the cheaper initial cost of equipment.
Each RAS group is manufactured in accordance with the actual accident prevention measurement standard and also in
accordance with European regulation for electrical equipments.