The refrigeration industry has been in a state of flux primarily because of the phase-out of ozone-depleting CFC refrigerants, and secondarily because of recent advances in compressor technology. This paper contains a review of current substitutes for CFCs and HCFCs which are under consideration by the compression refrigeration industry, an assessment of their characteristics related to choice ...

Water as a refrigerant (R718) is compared with other modern refrigerants (R717, R290 R134a, R12, R22, and R152a) regarding refrigeration capacity and COP (coefficient of performance). A computer program simulating a theoretical vapor compression refrigeration cycle was developed to calculate COPs, compression ratios, and discharge temperatures of the refrigerants from the compressor. The effect...

Nanoparticles have recently attracted huge attention as an engineering alternative in various fields. This is not unconnected with its established ability to perform better when used replace some conventional systems or enhancement for the system. Hence, this study reviewed viability of nanofluids developed from nanoparticles a possible replacement refrigerants available. In review, focus was p...

Mixed refrigerants are obtained from mixing pure in specific proportions and it is known as mixed refrigerants. Mixture divided into two groups according to their thermodynamic behavior: zeotropic mixtures azeotropic mixtures. In this study, the performance of R410A refrigerant mixture (R125 R32) vapor compression refrigeration cycle was investigated. The coefficients (COP) cooling system under...

This study includes energy and exergy analysis if air ground source 
 heat pumps are used for residential heating in Kastamonu province. The lowest soil temperatures measured between December March 2000-2021 were taken into account. R134a, R407c, R410a R500 as refrigerants the process that will benefit from heating. In discussed, ambient temperature to be heated was chosen same each pump, ...

Industry in the developed world has come to depend heavily on HFC refrigerants, all blends except for R134a. This dependency will increase when the last of the HCFCs, R22, becomes unavailable in the near future. Furthermore, the pressure for increased efficiency combined with reduced running costs and environmental impact is relentless, particularly since the Kyoto Protocol which has had the ef...

Refrigerant mixtures seem the most promising candidates as replacement fluids in refrigeration devices and heat pumps. In this paper two prediction methods are proposed for th~ evaluation of the thermal conductivity of refrigerant mixtures in their saturated liquid state and in the subcooled region. The first method is based on the use of mixing rules applied to pure refrigerant data evaluated ...

High-temperature heat pumps (HTHPs) are compression systems that convert residual to high-grade used in several industrial applications. Refrigerants for HTHPs still not explored, and most studies consider only pure refrigerants. This study carries out a general screening of binary ternary mixtures through multiparameter optimization based on low global warming potential (GWP) refrigerants feas...

Abstract The improper usage of refrigerants has a drastic impact on the environment, which is contributing to global warming and ozone layer depletion. are being used currently have very high GWP (Global Warming Potential) value that signifies an adverse warming. Refrigerant properties can be enhanced modified by making refrigerant blends. This research uses as measure provides alternative blen...