Freeze Protection of Water based Heat Transfer Fluids
Comparing antifreezes used in water based heat transfer fluids or brines.
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 0 oC (31 oF). 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
