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Thread: Chiller Water Loop with Heat Exchanger and Contamination in the loop

  1. #1 Chiller Water Loop with Heat Exchanger and Contamination in the loop 
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    Hi


    Its an existing industrial problem. There is a chiller system and two separate Water Circulation loops are there for water flow.


    First: Piping of the Chiller ( Made of Copper), then Mild Steel Piping upto the storage vessel and the to plate heat exchanger (PHE).


    Second:


    Water Circulation loop ( made of SS 316 L) in the plant which passes through PHE for heat exchange.


    The water in the above two loops two not come in direct contact with each other.


    Both the loops have water circulating through them. Now I want to remove the PHE system and send the water directly from chiller storage to plant. The issues of using it are.


    1. Contamination from Mild Steel and Copper pipe will spread in the whole plant.


    Now I want to know:


    Q1. Will the contamination will be really significant if I bypass the PHE. FYI the plant chilled water is used in the Vessel Jacket for Heat Exchange only. So its the issue of life of Jacket and will there be a considerable impact on it.


    Q2. Are the any filters available to avoid spreading of Contaminates beyond a certain point.


    Q3. Will replacing the Mild Steel Pipe by SS solve the issue. And is so will copper be a remaining issue.

    Q4. What other options are available ?


    Looking forward for an early reply


    Thanks in Advance.
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  3. #2  
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    It probably depends on what the water is being used for in the plant, and how clean that needs to be.


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  4. #3  
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    The plant has Jacketed manufacturing vessels with this particular water being used for Heat transfer purpose inside jacket. Jacket is made of SS 316 L. So will the contamination be a problem in longer run.
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  5. #4  
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    This isn't really my area of expertise. Maybe a chemical engineer will weigh in. The dissimilar metals could cause a problem with galvanic corrosion. Also, if your chiller tubes leak, then you could have whatever cooling medium that is get into your plant system.
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  6. #5  
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    mild steel and copper should never be coupled with an electrolyte present-instant galvaic corrosion
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