How do I prevent freezing in sub zero temperatures?
Electrolyte concentration needs to be high to prevent freezing. Alternatively you can put a heating/cooling coil around the unit (engine coolant driven) or wrap the booster with fiberglass foil backed insulation. The following link provides a document that shows on page 22 how the freezing point of the electrolyte can be delayed by increasing the concentration of KOH. http://www.oxy.com/oxychem/Products/caustic_potash/literature/kohhandb.
