WHAT IS REFRIGERANT ?
Refrigerant is a Fluid that picks up heat by Evaporating at a low temperature and Pressure and gives up heat by condensing at a higher temperature and pressure.
OR
Refrigerant is a medium of heat transfer, which passes through a refrigeration cycle Evaporation, Condensation and Throttling.
WHAT IS REFRIGERATION EFFECT?
Refrigeration effect is the amount of cooling produced by a refrigeration system.
Many refrigerants are available but for the purpose of simplicity a few of them are used for Air conditioning and Refrigeration purpose.
TYPES OF REFRIGERANT
PURE FLUID :- Fluid when used in refrigeration cycle does not change volumetric composition or saturation temperatures as they evaporate or condense at a constant pressure. Example – R134a.
CFCs ( Chlorofluorocarbons) :- These have a Ozone Depleting Potential contributing to the breakdown of the Ozone layer are banned by the Montreal Protocol and has been ceased to be manufactured. Example – R11, R12, R114.
HCFCs (Hydro-chlorofluorocarbons) :- These have limited ODP are classified under Montreal Protocol as transitional substances and are due to be phased out early this Century. Example – R22, R123.
HFCs (Hydro-fluorocarbons) :- These contain no Chlorine and therefore have Zero ODP and in consequence are not controlled by the Montreal Protocol. Example – R410A, R152A
Hydrocarbons :- They are Produced from Petroleum in an Oil Refinery. Hydrocarbons group are Ethane, Propane, Butane And Isobutene.
Azeotropes :- Its a Mixture of Two Substances which cannot be Separated in to its components by Distillation. It Evaporates and condenses as a single substance and its properties are completely different from its constituents.
