CT Bleed No bleed-off Formula

[buildingmanagement]

Is it possible for a no bleed in cooling towers? CT water parameters can be maintained with out blow down as per my chemist using their self-formulated chemicals.

 

[quark]

You can do. But what is about economics? Eduate me if it works.

Good Luck,

 

[25362]

BD is meant to keep a reasonable solids' concentration due to evaporation, cycle after cycle, of the circulating cooling water (ccw) in the CT.

The ROT value for evaporation losses is 1% of the ccw rate for each 10 deg F in cooling range. Thus BD, as % ccw, is estimated at

0.1(delta t, deg F)/(C-1)

where C is cycles of concentration, or the ratio
"solids in ccw/solids in makeup water".

How can a chemical addition keep solids' concentration constant w/o makeup water? Is your chemist chelating the solids or precipitating them ? Please let me know of your chemist's revolutionary trick. By the way makeup is used to also compensate for windage and carryover losses.
Thanks for your feedback. There is no end to learning.

 

[quark]

You are right 25362. I too presumed precipitation of the solids before commenting.