DC motor heat exchanger (BC)

The advantage of using air into the cooling of oleo hydraulic systems has its bases on the following facts:

  • There is no need of water
  • The system is independent of the connection to the water main
    Lower working costs in comparison with the water-oil exchangers, even if the starting investment is higher
  • Possibility to use warm air to heat the room in winter.
  • The particular structure of the cooling element allows great thermic performances and pressure resistance.

The difference between this line of products and the standard type AP and APL is the resistance to pressure that, in this case, is a little lower. We therefore believe that with such pressures, the BC line is suitable for many uses into the oleo hydraulic field.

Maximum working static pressure: 16 bar; test pressure: 25 bar.

Innovation in this line is that we can provide a by-pass valve to avoid exceeding counter pressures during the starting of the machine with cold oil (see the functioning details on page…)
It is not useful to use a check valve as by-pass to protect the exchanger from pressure’s peaks, since the inertia of the valve itself is too high in comparison with the speed of the pressure waves that occur into the oleo hydraulic systems.
The flow rates shown in the tables are the ones recommended for the exchanger proper working.
The efficiency curves show the specific exchange capacity in kcal/ h°C or in kW/°C according to the different oil rates. To calculate the heat quantity the different exchangers are able to dissipate it is enough to multiply such capacity by the difference between the requested oil temperature and the summer room temperature.

The Heat Exchanger from the BC line can be equipped as follow:

  • Direct current motor with IP 68 protection degree, IP 67 fixed thermo-switch with integrated relay and, upon request, cooling element with integrated by-pass valve (see page…)
  • Alternating current motor, IP 65 fixed thermo-switch and, upon request, cooling element with integrated by-pass valve (see page…)
    Fan driven by hydraulic motor, IP 65 fixed thermo-switch and, upon request, cooling element with integrated by-pass valve (see page…)

The air-oil heat exchangers can be used to cool other kind of fluids, which must be compatible with aluminum and its alloys.
However, for each use, with the exception of oil cooling, we recommend to consult our Technical Department.

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