An experimental study on the replacement of R12 in domestic refrigerators by new hydrocarbon/hydrofluorocarbon refrigerant mixtures has been carried out. Parameters and factors, affecting the performance characteristics of these refrigerants, based on experimental data have been compared to those of R12. ...
The substitute for refrigerant 12 is refrigerant R134A. The substitute for refrigerant R502 is refrigerant R404A. These refrigerants are not suitable for use with mineral oils, and polyester lubricants have been developed. Changing the system from refrigerant R12 or refrigerant R502 requires specialist ...
More so, the blend refrigerants have been widely used of late for the SAHP systems as an environmentally benign and energy efficient refrigerant. Nouri et al. [37] replaced R12 with R134A and conducted an experimental comparison of the system performance. They depicted a degradation of between ...
In this article, Investigate Performance of Alternative refrigerant R12 and R134a in refrigeration unit of automobile vehicle, experimentally and theoretically By Different conditions refrigeration effect at static, dynamic state of vehicle have been tested.Jadhav, P.L...
But while this new refrigerant is not harmful to the ozone layer, it is still officially classified as a global warming gas. The industry said it would take time to develop a permanent replacement, but that R134a was readily available as a short-term solution. EPA agreed, but that was ...
It is a pure refrigerant with an ODP equal to zero and a GWP lower than that of R22 (GWPR22=1700; GWPR134a=1300), as presented in Table 1 [1], [2]. Its saturation pressures are 40% less than those of R22. Although replacement of R12 by R134a for refrigeration has been widely ...
Refrigerant mixtures which are composed of HFC (hydrofluorocarbon) refrigerants having zero ODP (ozone depletion potential) are now being suggested as drop-in or mid-term replacement. An air-conditioning system based on these new alternative refrigerants must be modified or redesigned because ...
the refrigerant vapor which acts as the secondary vapor is compressed aerodynamically from the lower pressure in evaporator to the higher pressure in condenser. The inflow of the internal energy associated with the primary vapor serves as the energy input required for the compression operation. To ...
Heat Cycle In subject area: Engineering The refrigerant is a substance or mixture, normally a fluid, used in heat cycle undergoing a reversible phase transition from a liquid to a gas and back. From: Renewable and Sustainable Energy Reviews, 2018 About this pageSet alert Discover other topics ...
RefrigerantTypeODPGWPAtmospheric lifetime (years) R12 CFC 0.9 8500 102 R22 HCFC 0.06 1700 13.3 R134a HFC 0 1300 14 R407C HFC blend 0 1610 36 R410A HFC blend 0 1900 36 Ammonia (R717) Natural compound 0 0 < 1 Propane (R290) HC 0 3 < 1 R1234yf HFC unsat. 0 6 Very low...