Natural refrigerant

Natural refrigerants are natural substances that serve as refrigerants in refrigeration systems (including refrigerators, HVAC, and air conditioning). They are alternatives to hydrofluorocarbon (HFC), hydrochlorofluorocarbon (HCFC) and chlorofluorocarbon (CFC) based refrigerants. Unlike other refrigerants, they are not synthetic chemicals and can sometimes be found in nature. They may be viable orenvironmentally sustainable or both.

HFC, HCFC, CFC classes of chemicals are all potent greenhouse gases. HCFC and CFC classes of chemicals are damaging to the ozone layer, with CFCs being a primary culprit. Natural refrigerants, though they may exist in nature, are not in themselves harmless or nontoxic.

Natural refrigerants

  • Carbon dioxide (CO2) [R-744] used in the automotive industry,[1] an asphixiative gas and greenhouse gas
  • Ammonia (NH3) [R-717] the refrigerant most used in industrial refrigeration, formerly the primary refrigerant in home refrigerators, a highly toxic gas
  • Petroleum-derived hydrocarbon (HC) refrigerants
    • Propane (CH3CH2CH3) [R-290] a flammable hydrocarbon
    • Isobutane (CH3CH(CH3)2) [R-600a] a flammable hydrocarbon
    • Propylene (CH3CHCH2) [R-1270] a flammable hydrocarbon

References

  1. ↑ "New Automotive Refrigerants". www.aa1car.com. Retrieved 2016-10-18.

See also


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