Freeze Protection Closed Loop Systems

Antifreeze is used to freeze protect water based heat transfer fluids or brines

Various types and concentration of antifreeze like

  • ethanol
  • methanol
  • propylene glycol
  • ethylene glycol

can be used to freeze protect brines where the temperature in the fluids are 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 requiremens due to viscosity
  • moderate cost

Methanol

  • low corrosiveness
  • high flammability (if pure)
  • high toxicity
  • high heat transfer capacity
  • low pumping requiremens due to viscosity
  • low cost

Propylene Glycol

  • low corrosiveness
  • low flammability
  • low toxicity
  • low heat transfer capacity
  • high pumping requiremens due to viscosity
  • high cost

Ethylene Glycol

  • low corrosiveness
  • low flammability
  • high toxicity
  • low heat transfer capacity
  • high pumping requiremens due to viscosity
  • high cost

Related Topics

  • Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort

Related Documents

Tag Search

  • en: freeze protection closed loop systems

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