Fundamental Basic's on REFRIGERANTS -DOWNLOAD PDF

CONTENTS :-

• Definition
• History
• Classification
• Colour coding
• Properties
• Conclusion

HISTORY OF REFRIGERANTS :-
Natural refrigerants:-
1) Ice blocks
2) Using nocturnal cooling
3) Use of evaporation

Artificial refrigerants :-
1) In 1835, Jakob Perkins use ethyl ether as the refrigerant ( b.p= 30’c). (if air mixed forms an explosive gas).
2) In 1874, Raowl Piolet designs the first sulphur dioxide based system. (forms H2SO4 when gets moisture).
3) In 1885, Fraunz Windhausen builds the first to use co2 in Germany. (high operating pressure ).
4)In 1920, iso-butane based domestic refrigerator ( highly flammable), General Electric first introduce “Kelvinator “ refrigerator.
5) In 1930, Introduction of CFCs .

CONCLUSION

• Don’t treat the today’s refrigerants with yesterday’s techniques.
• CFC’s replaced by refrigerants blends.
• R & D of the refrigerants is in the field of environmental acceptability.
• TEWI, the factor used to decide the overall capability of a refrigerant.

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