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Technical
NEW BITZER OIL COOLER SERIES FOR ENHANCED PERFORMANCE
Supplied by BITZER
In response to the increasing requirements of modern applications, BITZER is expanding its portfolio to include a new water cooled oil cooler.
The OWD series not only offers an expanded capacity range of up to 300 kW and innovative technologies for improved heat transfer, but can also accommodate a whole host of potential configurations.
The OWD series is part of a comprehensive portfolio that covers the capacity range of all BITZER screw compressors, both in single and parallel operation, and is compatible with a variety of synthetic refrigerants like HFC, HFC-HFO blends, HFO and hydrocarbons.
Although specially developed for tried-and-tested HS and OS screw compressors, it also offers a reliable solution in combination with the products of other manufacturers.
It therefore takes oil cooler efficiency and versatility to a whole new level – with optimised performance, increased compatibility and maximum adaptability for many different applications.
A WIDE CAPACITY RANGE PAIRED WITH INNOVATIVE DESIGN In addition to a much wider capacity range, the OWD series also offers maximum oil cooler capacity of up to 300 kW, regardless of the operating conditions, which makes it possible to efficiently tackle even the most demanding cooling tasks in high temperature heat pump and low temperature applications. A special feature of this series is its use of disc and doughnut baffles, ensuring even oil distribution throughout the cooler tubes. This technology improves heat transfer on the oil side and reduces flow surges with minimal pressure loss.
OWD oil coolers are available in 17 product variants, which come in 2-pass and 4-pass designs.
This flexibility enables optimal adjustment to the specific requirements of different applications.
THE TECHNOLOGICAL BENEFITS OF DISC AND DOUGHNUT BAFFLES The new disc and doughnut baffles enable a symmetric flow for even oil distribution and maximum heat transfer. The optimised flow control improves the flow pattern and minimises unwanted turbulence, which not only increases efficiency, but also boosts
All Image by All images provided by BITZER
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Fig. 1: Cross section of the OWD oil cooler series
RACA Journal I August 2025 www. refrigerationandaircon. co. za