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Technical Insights into Uninhibited Ethylene Glycol

From Thermo Fisher Scientific – Thermo Scientific Baths, Circulators & Chillers
 

 

Uninhibited ethylene glycol has been a popular heat transfer fluid choice in chillers for many years because of its initial low cost and excellent freeze and heat protection over a wide temperature range. It also has good heat transfer capabilities and low conductivity, not to mention that it is completely miscible with water - an inexpensive and abundant solvent.

Those are the pros. There are, however, disadvantages inherent to uninhibited ethylene glycol, including:

_ It is relatively easy to degrade.
_ It promotes corrosion after it degrades.
_ It is difficult to monitor.
_ It absorbs water from the atmosphere.

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