Refrigerants halocarbons

Within the family of halocarbon refrigerants are compounds that contain chlorine, fluorine, and carbon, the chlorofluorocarbons (CFCs). Hydrochlorofluorocarbons (HFCs) contain chlorine, fluorine, carbon and hydrogen. Halocarbons that contain only carbon, fluorine, and hydrogen are called hydrofluorocarbons (HFCs). 

This table gives physical properties of compounds that have been used as working fluids in traditional refrigeration systems or are under consideration as replacements in newer systems. Some are also used as solvents and blowing agents. Many of the compounds listed are believed to be less harmful to the environment than the traditional halocarbon refrigerants. 

This table gives the thermal conductivity of about 275 liquids at temperatures between -25 and 100 °C. Values refer to nominal atmospheric pressure when an entry is given for a temperature above the normal boiling point of the liquid, the pressure is understood to be the saturation vapor pressure at that temperature. Reference 1 contains data on many of these liquids at high pressures. Data on halocarbon refrigerants over a wide range of temperature and pressure may be found in Reference 6. 

There is a need for specially designed adsorbents for halocarbon refrigerant fluids, to avoid decomposition of the zeolite. 

Hall coefficient, rare earth elements, 4-127 to 132 Hall density, superconductors, 12-73 to 74 Hall resistance, quantized, 1-1 to 11 Halocarbon refrigerants, 6-133 to 135 Handling and Disposal of Chemicals in Laboratories, 16-1 to 12... 

---