How to advoid water condensation in compressed air piping

[medo]

Hello all,
I'm having problems with my compressed air system. In the factory have some clean rooms with temperature are maintained around 23°C. The outside of clean rooms are normal condition (around 32°C). When i checked some air supply points outside. There were no water in compressed air. But water appreared in cleam rooms.
Does anyone know what is reason and how to advoid it?

Thanks in advance

 

[Dale]

Sounds like the humidity in your air is such that the dew point is somewhere between 32 and 23. You need to either decrease the dew point by dehumidifying the air or increase the temperature so that it is above the dew point.

Probably the 23 temperature is required for whatever process is done in the clean room. So you would need to dehumidify the air.

 

[jrmichler]

All air has water in it. The dew point is a measure of the amount of water in the air. When air is compressed, the dew point is increased. When the dew point is higher than the pipe temperature, the excess water condenses to form liquid water in the pipes.

The solution is to add a compressed air dryer (search the term) immediately after the air compressor. This is one particularly good link: https://www.atlascopco.com/en-us/compressors/wiki/compressed-air-articles/choosing-a-dryer. I see that Harbor Freight sells an air dryer.

Home shop users can get away with a simple air filter near the end of the line, but compressed air systems should have an air dryer.