Quote Originally Posted by Josip
You are right, I remember the past time when we design EC with desuperheater section (above water eliminator) where the inlet gas temperature were reduced to prevent extraction of calcium carbonate from cooling water. In that time water was treated only with NaCl to be soft, no other chemicals were added.
This is the same thing. Desuperheaters are very seldom used anymore on recip. plants, but they should be. They do make a difference on scale formation on the top row of tubes.

The desuperheaters do accumulate some very small amounts of scale. But since they are in a humid air, rather than complete liquid water this makes a big difference.

I think it is a combination of discharge temperature in the tubes and the actual water temperature. Where both are high, the scale formation is much worse.

This makes another good example of why we should keep condensing temperatures/discharge pressures lower.