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Posts: 2
Join Date: May 2008
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Mr. Stephens,
Properly treating your water is the first step in your quest for rust/oxidation reduction. However, I would not recommend the use of glycol in any system where the fluid temperature has the potential of exceeding 200F. Glycol (i.e. ethylene or propylene) will begin to break down and "varnish" any of the high temperature surfaces - greatly reducing the heat transfer capability of the system.
By working with a local industrial water treatment company they will be able to recommend the best combination of chemical treatment to reduce the oxidation rate. The idea with chemical treatment is to "soften" the water to reduce the oxidation reduction rate of the fluid.
Combining chemical treatment with mechanical filtration can also help to capture any particles that break off, and can include any device from a strainer, bag filter, centri-separator, or sand filter.
There is also another method that has been coming into favor in recent times. You could use a full-bodied auto-shut off quick disconnect on the connection points of the mold to retain the fluid inside the mold. The full-bodied quick disconnect reduces the pressure drop across the connector compared to conventional connectors, and the auto-shut off allows you to remove the mold without losing too much fluid; keeping the air out of the channels and preventing rust build up.
Contact me if you would like to discuss this further. My email is pklingberg@corpemail.com or my telephone number is 262-641-3809.
Thank you for your post, and have a great day.
Patrick Klingberg
Product Manager
Process Temperature Control
AEC, Inc.
Patrick Klingberg
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