04 September 2010

CFCs (chlorofluorocarbon) Refrigerant

A chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane

CFC - R11 Tricholorofluoromethane
OIL
  • Mineral
  • Alkylbenzene
Used in large, low pressure centrifugal chillers. This type of chiller provides a very large amount of chilled water for air conditioning purposes (office buildings, hotels, etc.) at the lowest operating cost compared to any other type of air conditioning system.

R-11 centrifugal chillers operate in a vacuum on the low side. Air which leaks into these systems must be purged, and traditionally this meant that some refrigerant would be lost along with the air. New purge technology and better maintenance practices have reduced
R-11 losses in these systems.



R12 Dichlorodifluoromethane
OIL
  • Mineral
  • Alkylbenzene
Widely used in a variety of applications from small hermetic refrigeration systems up through large, positive pressure chillers. It has been the long-time industry standard for
automotive air conditioning, high/medium/low temperature refrigeration, and many other commercial and industrial applications.


CFC - R13 Chlorotrifluoromethane
OIL
  • Mineral
  • Alkylbenzene
Very low temperature refrigeration systems typically operate in two or more stages (cascade type sytems). It would be nearly impossible to achieve low temperatures in a single stage with an inexpensive compressor. The traditional cascade system has a low temperature stage which uses the lower boiling point gas, such as R-13 or R-503, and a high stage which typically uses R-12, R-22, or R-502.

The high stage evaporator provides the correct condensation temperature for the low stage so that compressors in both stages can run at "normal" pressures.


CFC - R13B1
OIL
  • Mineral
  • Alkylbenzene
Very low temperature refrigeration systems typically operate in two or more stages (cascade type sytems). It would be nearly impossible to achieve low temperatures in a single stage with an inexpensive compressor. The traditional cascade system has a low temperature stage which uses the lower boiling point gas, such as R-13 or R-503, and a high stage which typically uses R-12, R-22, or R-502.

The high stage evaporator provides the correct condensation temperature for the low stage so that compressors in both stages can run at "normal" pressures.


CFC - R113 Thrichlorotrifluoroethane
OIL
  • Mineral
  • Alkylbenzene
R-113 is used in commercial and industrial air conditioning and industrial water chillers. It is typically employed in an R-11 centrifugal chiller to generate less capacity to better match load conditions. R-113 was widely used as a solvent before being phased out by regulations. It is not possible to use solvent grade 113 for refrigeration purposes because of contaminants or additives used for solvents.

CFC - R114 Dichlorotetrafluoroethane
OIL
  • Mineral
  • Alkylbenzene
Used in positive pressure centrifugal chillers for air conditioning and industrial process cooling, as well as for air conditioning in very high ambient temperature conditions.
Its very good chemical stability makes it useful in highly corrosive applications, such as for shipboard chillers. Good high temperature stability along with lower vapor pressures
make it a good choice for high ambient air conditioning, for example in steel mill cranes.


CFC - R500 Blend: 12/152a
OIL
  • Mineral
  • Alkylbenzene
AZEOTROPE: a mixture of two or more refrigerants in which the liquid and vapor have same composition at equilibrium. In addition, the resulting pressure of the mixture is either higher or lower than the pressure of any of the components. Azeotropes behave like pure component refrigerants because there is no change in boiling temperature or shift in composition during phase change, equipment operation, or leakage.

Designed to be a "higher capacity" R-12 type refrigerant, R-500 found some use in air conditioning and dehumidifier equipment and in positive pressure centrifugal chillers.


CFC - R502 Blend: 22/115
OIL
  • Mineral
  • Alkylbenzene
AZEOTROPE: a mixture of two or more refrigerants in which the liquid and vapor have same composition at equilibrium. In addition, the resulting pressure of the mixture is either higher or lower than the pressure of any of the components. Azeotropes behave like pure component refrigerants because there is no change in boiling temperature or shift in composition during phase change, equipment operation, or leakage.

Developed for use in low temperature refrigeration (the evaporator pressure stays out of vacuum down to -40F). R-502 offers lower discharge temperature and improved capacity compared to R-22. Commercial refrigeration systems can perform low temperature refrigeration in a single stage with relatively inexpensive compressors.


CFC - R503
OIL
  • Mineral
  • Alkylbenzene
Very low temperature refrigeration systems typically operate in two or more stages (cascade type sytems). It would be nearly impossible to achieve low temperatures in a single stage with an inexpensive compressor. The traditional cascade system has a low temperature stage which uses the lower boiling point gas, such as R-13 or R-503, and a high stage which typically uses R-12, R-22, or R-502.

The high stage evaporator provides the correct condensation temperature for the low stage so that compressors in both stages can run at "normal" pressures.

1 comment:

  1. wow what an opportunity working for such a great brand!! you really did well landing that one. congrats!


    Commercial Refrigeration

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