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Mixtures of Ethylene Glycol and water are commonly used as an antifreeze or heat transfer fluid, such as in our GlycoChill+ E-series Heat Transfer Fluids. Here are the chemical and physical properties of Ethylene Glycol/water mixtures.
4 Νοε 2012 · Ethylene Glycol is the most common antifreeze fluid for standard heating and cooling applications. Ethylene glycol should be avoided if there is a slightest chance of leakage to potable water or food processing systems. Instead solutions based on propylene glycol are commonly used.
These properties of the 50-50 ethylene glycol-water mixture and air are important for designing and analyzing various thermal and fluid systems, such as cooling systems, heat exchangers, and HVAC equipment.
Water, either purified or deionized, is the most common and efficient coolant used in recirculating cooling systems, making it a standard for comparison to other coolant fluids. Other common coolant types include ethylene glycol, propylene glycol, mineral oil, and dielectric fluids.
Glycol is a chemical used in closed loop systems to protect the fluid from freezing. It is only one of the chemical treatments applied to the fluid in these systems to prevent problems and extend the efficiency of the system’s cooling ability.
Industrial routes. Ethylene glycol is produced from ethylene (ethene), via the intermediate ethylene oxide. Ethylene oxide reacts with water to produce ethylene glycol according to the chemical equation. C2H4O + H2O → HO−CH2CH2−OH. This reaction can be catalyzed by either acids or bases, or can occur at neutral pH under elevated temperatures.
Glycol-water solutions should be tested regularly to determine the percentage glycol, pH, reserve alkalinity, inhibitor levels and degree of contamination. A specially calibrated refractometer is the most reliable and practical means of determining the percentage glycol in the field.
