REFRIGERANTS AND BRINES
Desirable Properties of Refrigerants
¢ Not Toxic
¢ Unexplosive
¢ They are not Poisonous
¢ Non Flammable
¢ They are Stable gas
¢ They may operate under lower
pressures
¢ Leaks will be easily detectable
¢ Pressure diff
¢ Pocess Low boiling point
¢ Non Corrosive materials
CLASSIFICATION OF REFRIGERANTS
Brine
In large air conditioning process plants, the refrigerant or coolant has to travel along a long
distances as the evaporator will be located within a particular distances resulting
in pressure drop inside the unit. Here we will be choosing water as a secondary refrigerant or coolant for applications
above its mentioned freezing point and also helpful for subzero applications. All these are the major applications regarding brines.
Brine is a liquid solution which is formed by
dissolving some sort of soluble substances in water. The soluble substances includes salt
like sodium chloride, calcium chloride or a glycol. On mixing a soluble
substance, the freezing point of water should be lowered.
¢ The brine should possess a
concentration level that will prevent a sudden crystallization effect.
¢ They are Nontoxic and non-flammable.
¢ Viscosity and density
should not affect heat transfer.
¢ PH value- should be
neutral to reduce corrosion.
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