Blog/14 April 2022

Why is my compressor overheating?

95% of an air-cooled screw compressor’s motor power ends up as heat in the compressor room. How to keep the room within limits: room volume, forced ventilation, separating intake and exhaust, and filters for dusty environments.

Published
14 April 2022
Reading time
1 min
Author
Tehnogama tim
Why is my compressor overheating?

In practice, the compressor room is often the last part of a building anyone thinks about or pays special attention to, whether a new building is being constructed or an existing one renovated.

Air compressors need adequate ventilation, because they produce a large amount of heat while running. When choosing where to install a compressor, pay particular attention to the room’s ventilation requirements and to the space that must be left around the compressor.

In oil-lubricated, air-cooled screw compressors, 95% of the total power absorbed by the electric motor is released into the air in the compressor room.

The key goal is to keep the temperature in the compressor room within the values required in the compressor’s installation and operating manual. That way you ensure enough space and ventilation in the compressor room, and your compressor will perform at its best.

01Ventilation

While a screw compressor is running, the room temperature must stay within the temperature limits stated in the installation and operating manual.

The room volume must also be adequate, as must the exchange of fresh and warm air that the compressor needs to cool properly.

In many cases it is necessary to add forced ventilation, that is, to install additional room fans.

It is also important to consider where fresh air enters the compressor room and where warm air leaves it, so that the compressor does not draw in the warm air it has just expelled.

If the environment is dusty, it is advisable to fit an additional filter panel on the fresh air intake opening to reduce the amount of dust particles.

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