Monday, December 26, 2016

TECHSHORE INSPECTION SERVICES : HVAC : REFRIGERANTS AND BRINES

REFRIGERANTS AND BRINES

         Refrigerant is a medium that absorbs heat energy from the material which should be cooled and it will discharge this absorbed heat energy to the atmosphere. In this particular process, the chemical substances which are embedded will not undergo any chemical reactions, but it will results in some kind of physical change.
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. b/w the evaporating & condensing pressure should be as little as possible.
¢  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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Location: 36/977A Kattunilath, Lissie Hospital Road, Kochi, Kerala 682018, India

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