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Evaluation of flammability characteristics of mixed refrigerants R134a/R1270, R134a/R170, and R170/R1270.
Optimización energética de los refrigerantes R152a, R1234yf, R290, R1270, R600a y R744, como alternativa al R134a en un armario de refrigeración vertical.
Energy optimisation of R152a, R1234yf, R290, R1270, R600a and R744 refrigerants as alternatives to R134a in a vertical refrigeration cabinet.
Experimental evaluation of the novel R744/R1270 blend in a transcritical refrigeration plant.
Experimental investigation of the performance of an R1270/CO2 cascade refrigerant system.
Experimental evaluation of a cascade refrigeration system with the natural refrigerants R290/R744, R1270/R744 and R600a/R744.
Condensation heat transfer and pressure drop of azeotropic mixture refrigerant R32/R1270 inside horizontal small-diameter tubes.
Thermodynamic performance evaluation of a cascade refrigeration system with mixed refrigerants: R744/R1270, R744/R717 and R744/RE170.
Convective condensation of R600a, R290, R1270 and their zeotropic binary mixtures in horizontal tubes.
Energy improvements in a stand-alone transcritical refrigeration system using a low-GWP mixture of CO2/R1270.
Experimental performance of an R-22-based refrigeration system for use with R-1270, R-438A, R-404A and R-134a.
Vapor-liquid equilibrium measurement for carbon dioxide (CO2)+propylene (R1270) binary mixture at temperatures from subcritical to supercritical.
Energy impact of the Internal Heat Exchanger in a horizontal freezing cabinet. Experimental evaluation with the R404A low-GWP alternatives R454C, R455A, R468A, R290 and R1270.
Comparison of the performance of propane (R290) and propene (R1270) as alternative refrigerants for cooling during expansion in a helical capillary tube: A CFD-based insight investigation.
Energy assessment and environmental impact analysis of an R134a/R744 cascade refrigeration plant upgraded with the low-GWP refrigerants R152a, R1234ze(E), propane (R290) and propylene (R1270).
Energy comparison based on experimental results of a cascade refrigeration system pairing R744 with R134a, R1234ze(E) and the natural refrigerants R290, R1270, R600a.
Refrigeration sector monitoring
9 results
For IIR members only
A new non-flammable mixture to boost the performance of CO2 systems
In a recent IJR article, researchers propose combining R744 with Dimethyl-ether (DME) to boost system performance while ensuring safety and low environmental impact, in a recent IJR...
Air conditioning: towards a relaxation of the rules for the use of flammable refrigerants
While the European Commission is paving the way for the use of flammable refrigerants as an alternative for split systems, the current revision of the international standard IEC 60335-2-40 should allow higher...
UK: Waitrose installs HFO chillers in store
Waitrose, the English supermarket chain, is testing chillers using HFO-1234ze refrigerant at its supermarket in Bromley, near London, UK.
The global natural refrigerants market on the rise
The natural refrigerants market is projected to register a CAGR of 11.5% between 2015 and 2020, to reach USD 1,419.19 million in 2020 from USD 821.74 million in 2015.
Solar cooling: Plans for air-conditioned stadiums in Qatar
When Qatar won the bid to host the 2022 football World Cup in December 2010, it came as a surprise. One of the major causes of scepticism was the average summer temperatures of over 40°C with recent peaks at 50°C. But central to Qatar's bid was a...
US EPA proposes acceptance of hydrocarbons and R32 in 6 applications
The US EPA has proposed a range of acceptable uses for hydrocarbon refrigerants – R600a, R290, R170 and R441A along with R32 under the EPA’s Significant New Alternatives Policy (SNAP)
US: EPA expands the use of 4 hydrocarbons and R32
The US Environmental Protection Agency (EPA) recently authorised the use of four hydrocarbon refrigerants and R32 in various applications.
Trends and Figures: World AC heat pump market
The use of heat pumps (HPs) is increasing in the European Union (EU), Japan, and China. According to JARN's figures, the global market for room air conditioners (RACs) and packaged air conditioners (PACs) was about 78.7 million units in 2007, 72%...
German survey on retailers’ energy policies
A German survey on retailers’ energy policies spans the entire retail industry, representing a total worth of €165 billion in sales, i.e. about 35% of German, Austrian and Swiss retail sales. 37% of the surveyed companies were from food retailing,...
IIR news
1 result
International events: GL2008
The 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008) was held in Copenhagen on September 7-10, 2008. The event attracted 397 participants from 32 countries. The initial conferences in the series tended to attract participants...
Encyclopedia of Refrigeration
Hydrocarbon refrigerants
Hydrocarbons such as R290 (propane), R600a (isobutane) or R1270 (propene/propylene) are low GWP non-toxic natural refrigerants with excellent thermodynamic properties. They offer an...
