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BOCK has launched the HA-LG semi-hermetic compressor range for low GWP refrigerants.

Applications in low temperature basically place higher demands on every compressor.

In the low temperature range, the refrigerant mass flow is lower and is disproportionately heated by the drive motor. In addition, HFO refrigerants such as 455A or R454C require significantly more know-how in terms of the drive motor compared to standard refrigerants.

This is because HFO refrigerants have a significantly higher solubility in the oil, which leads to a strong reduction of the oil viscosity and thus increases the susceptibility to compressor damage.

For this reason, BOCK has developed a special drive unit for the new LG series that makes the compressors less sensitive to decreasing viscosity.

BOCK’s HA-LG series, which is available now, is a proven air-cooled semi-hermetic compressor for low temperature.

It is an efficient and reliable solution for low temperature applications plus the compressors are direct-intake and the motor is air-cooled.

The suction gas is not additionally heated by the motor but is sucked in directly by the compressor without any diversions via the motor. The engine is cooled by a compact ventilation unit, which cools not only the engine itself but also the cylinder heads through targeted air cooling.

This allows the discharge gas temperature to be reduced. The result: a significant increase in capacity and an extension of the application range.

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