It also provides a closer match to R-500 at air-conditioning temperatures. https://sciencing.com/physical-properties-freon-12-8059751.html R-414B: A retrofit blend for R-12 refrigeration and air conditioning systems as well as automotive air conditioning systems. Dichlorodifluoromethane (R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. Even if you are not part of the industry chances are you have heard of R-12. [Certain properties of freon 12 and method of its determination] [Certain properties of freon 12 and method of its determination] Gig Sanit. Prins, and ; L. v. d. Klundert P-V-T- Data and Thermodynamical Properties of Freon-12 (CCl 2 F 2) and Freon-13 (CClF 3) Fluorocarbons at Temperatures Between 0° and 150° C. and at Pressures Up to 400 Atm.. A. Michels, T. Wassenaar, G. J. Wolkers, Chr. What is this information? View density / specific gravity for dichlorodifluoromethane in WISER. 1952 Apr;4:44-6. You see, R-12 is a CFC refrigerant and was one of the first artificially created refrigerants to see widespread usage. [Article in Undetermined language] Authors O D KHALIZOVA, E I VORONTSOVA. The Physical Property fields include properties such as vapor pressure and boiling point, as well ... Dichlorodifluoromethane; (Freon 12, CFC 12) (75-71-8) 3000 ppm : 10000 ppm : 50000 ppm (DOE, 2016) Regulatory Information. R-12 is one of those classic refrigerants that nearly everyone has heard of before. This blend refrigerant is similar to R-401A except, it is higher in R-22 content. The thermodynamic and physical properties of Freon™ 134a, coupled with its low toxicity, make it a very efficient and safe replacement refrigerant for CFC-12 in many segments of the refrigeration industry, most notably in automotive air conditioning, appliances, small stationary equipment, medium-temperature supermarket cases, and f) r-401b Refrigerant properties. 2 Thermodynamic Properties of DuPont™ Freon ® 12 (R12) SI Units Tables of the thermodynamic properties of DuPont™ Freon ® 12 (R-12) have been developed and are presented here. This blend has a higher capacity at lower temperatures and matches R-12 at –20°F. R-12 Pressure Chart. The pressure and system capacity match R-12 in 40°F to 50°F evaporators, and the discharge pressure in hot condensers is only 5 to 10 psi higher than R-12 (a benefit in automotive AC and warmer refrigeration environments). PMID: 14926985 No abstract available. Although a refrigerant has not been found yet which has all the desirable properties, Freon-12 carbon dioxide and ammonia are commonly used for very low temperature work because of their low boiling points.
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