12 refrigerant properties software

Now available in english, german, spanish, portuguese and italian. As of now, free version db library services pipe b36. R 12 is a chemical compound known as a refrigerant. By the end of the 1980s the first nonchlorinated refrigerant, r4a, was on the market. The oil and refrigerant should be miscible to assure that the oil is transported out of the refrigeration circuit and not accumulated in the system. R 12 is used specifically in auto air conditioning and medium and high refrigeration. The refrigerants should be non poisonous to humans and food stuff. Thermodynamic properties of saturated and superheated dichlorodifluoromethane cf 2 cl 2 specific volume, enthalpy and entropy. Complying with the montreal protocol, its manufacture was banned in developed countries nonarticle 5 countries in 1996, and developing countries article 5 countries in 2010 out of concerns about its. R4a, chemically 1,1,1,2tetrafluoroethane cf 3 ch 2 f is a nonflammable gas used primarily as a hightemperature refrigerant for domestic refrigeration and automobile air conditioners. Thermal properties of each refrigerant 24 table 10. Opteon xp40 r449a refrigerant is an environmentally sustainable, nonozone depleting refrigerant offering a low global warming potential gwp.

Accurate thermophysical properties are available for several fluids. Thermodynamic properties of duponttm freonr 12 r12. Exergetic and thermodynamic comparison of r12 and r4a as. The following tables show the percentage composition of refrigerant blends found acceptable acceptablethis designation means that a substitute may be used, without restriction, to replace the relevant ods within the enduse specified.

An example of the process operating with zeotropic mixture is given on figure 3. This refrigerant is not 100% compatible with the lubricants and mineralbased refrigerant currently used in r 12. Refrigerants physical properties engineering toolbox. The thermodynamic properties of refrigerant r12 are provided by martinhou equation of state a. Cooling efficiency of each refrigerant 25 table 11.

Pdf experimental evaluation of r410a, r407c and r4a. Solkane software is designed for calculations involving complex material data and refrigerant circuits. The natural ice and mixture of ice and salt were the first refrigerants. The refrigerant is a heatcarrying medium which during their cycle i. Table a12 saturated refrigerant4a pressure table table a superheated refrigerant4a figure a14 ph diagram for refrigerant4a figure a15 nelsonobert generalized compressibility chart table a16 properties of the atmosphere at high altitude table a17 idealgas properties of air table a18 idealgas properties of. For decades, freon refrigerants have been chosen for their performance and safety for all residential and commercial ac, heat pumps, and refrigeration.

The toxicity depends upon the concentration and exposure. International standard formulation for the thermodynamic properties of 1,1,1. Refrigerants and their application presented by thomas e. Thermodynamic properties of refrigerants r11, r12, r, r14, r22, r23, r1. This information is based on values calculated using the nist refprop database mclinden, m. Design changes to the condenser and evaporator need to be done to use this refrigerant. A software package for both the computation of thermodynamic properties and the.

Refrigerant types, properties, designation, examples. This refrigerant is not 100% compatible with the lubricants and mineralbased refrigerant currently used in r12. It is now being used as a replacement for the more environmentally harmful r12. On the other hand, there may be certain situations in which we cannot allow the refrigerant to come in direct contact with the items being refrigerated, and then the refrigerant used is termed as a secondary refrigerant. In the united states, there is a 2017 target date to replace the r4a freon with a newer refrigerant. It is important for both consumers and technicians to be aware of these alternative refrigerants, their properties, and proper servicing procedures.

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. The phase out of r4a began in 2011 in europe with a total ban due by 2017. Please consult the msds for more comprehensive information, or contact the hc refrigerant products technical support representative. Nist reference fluid thermodynamic and transport properties database. Refrigerant properties motor vehicle air conditioning. Genetron refrigerants modeling software download home resources genetron refrigerants modeling software download i am a please select an occupation contractor wholesaler refrigeration engineer student oem oem aftermarket distributor other required. Energy consumption and environmental impacts 26 of each refrigerant during operation table 12. A computer software for thermodynamic properties computation. You can distinguish it as a colorless liquefied gas that. R12 dichlorodifluoromethane properties engineering toolbox.

Freon 12 and similar chloroflorocarbons were first recognized as being potentially useful as a replacement for ammonia in refrigeration systems in the early 1900s. The industrial refrigeration consortium is a collaborative effort between the. After download and installation, everyone in the air conditioning and refrigeration industries can calculate saturation. Thermodynamic properties of fluids commonly used in refrigeration. Freon 12 is the dupont brand name for the chemical dichlorodifluoromethane. The use of smaller hoses and 30% increase in control pressure regulations also have to be done to the system. Singlestage vapor compression subcritical process with a single component or azeotropic refrigerant in temperature entropy t,sand pressure enthalpy p,hdiagrams when zeotropic mixtures are used as refrigerants, gliding temperatures influence cycle efficiency as well as system design.

The traditional cfcs r11, r12, r, r1, r114, and r115. By evaluating the various arbitrary constants required in the equations used within the program, it is possible to estimate the properties of refrigerants r11, r12. Thermodynamic and transport properties of the refrigerant. Compositions of refrigerant blends significant new. It has a whole range of other names, including dichlorodifluoromethane, cfc 12, freon 12, genetron 12 and forane 12. It was invented by a partnership of dupont and general motors back in the 1920s and was being used as the primary type of refrigerant for home units until the 1950s. Simulate your system with the right refrigerant and export the results to excel. Physical properties of refrigerant metric and standard physical properties of refrigerant metric. This refrigerant provides improved performance versus r404a and r507 in new and existing. It is safe for normal handling as it is nontoxic, nonflammable and noncorrosive. Summary of environmental impacts of each refrigerant 28 table. In 1994 r12 was phased out and r4a became its substitute. This is a free version for promotion of paid version, maxansi piping handbook pro.

Opteon xp40 r449a has been successfully used in a wide range of commercial refrigeration applications. Fellow ashrae mcquay international staunton, virginia usa 1 what is a refrigerant. Specific volume v, specific internal energy u, enthalpy h, and entropy s of saturated and superheated dichlorodifluoromethane cf 2 cl 2 also known as refrigerant 12 r12. R4a is a haloalkane with thermodynamic properties similar to r12.

Thermophysical properties of fluid systems the nist webbook. Toxicity is the important properties of refrigerants. Refrigerants are used in cooling systems, air conditioners and refrigerators. R4a is an hfc hydrofluorcarbons used to replace the chlorinated refrigerant r12. Specific volume v, specific internal energy u, enthalpy h, and entropy s of saturated and superheated dichlorodifluoromethane cf 2 cl 2 also known as refrigerant 12 r 12. Dichlorodifluoromethane is an inert gas that has a long history acting as a refrigerant, allowing us to stay cool in the summer, and as a spray propellant for important consumer substances. The following thermodynamic properties will be calculated. Software systems corporation refrigerant properties program, j. Due to its unique properties, freon 12 was particularly suited for this purpose. For example, hcfc22 is an acceptable substitute for r502 in industrial process refrigeration.