Freeze Protection of Water based Heat Transfer Fluids
Comparing antifreezes used in water based heat transfer fluids or brines.
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Different types and concentrations of antifreezes like
- ethanol
- methanol
- propylene glycol
- ethylene glycol
can be used to freeze protect water based heat transfer fluids or brines where the temperature in the fluid is below 0oC (32oF). Typical advantages and disadvantages for the freeze protection fluids are listed below.
Note! Check the related documents listed below for details.
Ethanol
- low corrosiveness
- high flammability (if pure)
- low toxicity
- high heat transfer capacity
- low pumping requirements due to viscosity
- moderate cost
Methanol
- low corrosiveness
- high flammability (if pure)
- high toxicity
- high heat transfer capacity
- low pumping requirements due to viscosity
- low cost
Propylene Glycol
- low corrosiveness
- low flammability
- low toxicity
- low heat transfer capacity
- high pumping requirements due to viscosity
- high cost
Ethylene Glycol
- low corrosiveness
- low flammability
- high toxicity
- low heat transfer capacity
- high pumping requirements due to viscosity
- high cost
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