PH level of water and chemical solution - Descaling

[Sumit]

Dear Friends ,

How much PH value of solution of water and chemical should be maintained while doing the De-scaling of condensers. If the solution is more acidic , it will damage the copper tubes and if its less then will not remove the scale effectively.

[Brian_UK]

I think that it may depend on the product being used, the following link refers to a particular brand but shows PH levels between 0.5 and 0.7 for the different options.

Perhaps ask your chemical supplier.
http://descale.me/downloads/documents/MEED_Article-What_to_look_for_in_descaling_Heat_Exchangers.pdf

[D.D.KORANNE]

While plant operates , maintain the following parameters to avoid regular de-scaling

1) maintain alkaline ph .. 7+
2) address dissolved oxygen issue by additives ...... To avoid tubes pitting
3) maintain commercial hardness of cooling water around 5
4) provide tower bleed-off
5) maintain tower hygene

this will give you exceleent results on condenser life & plant perfformance . This will avoid sudden failures