Results 141 to 150 of about 739 (173)
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Multi-scale evaluation of an R290 variable geometry ejector
Applied Thermal Engineering, 2021Abstract Although representing a promising alternative to mechanical compressor driven systems, ejector refrigeration has not widely spread due to its limits due to the system operation's rigidity. Ejectors are fluid-dynamics controlled devices and because of their fixed geometry, operates at their best efficiency in a narrow range of operating ...
Besagni G., Cristiani N.
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Research on flammability of R290/R134a, R600a/R134a and R600a/R290 refrigerant mixtures
International Journal of Refrigeration, 2022Dehua Cai, Zian Hao, Hao Xu, Guogeng He
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Mutual solubility and VLLE correlation for the R32 + R290 system
Fluid Phase Equilibria, 2003Following our recent study on vapourliquid-equilibrium (VLE) of the difluoromethane (R32) + propane (R290) system, that covered the temperature range between 248.13 and 294.91 K, the present study focused on the behaviour of the liquid phase down to 215 K.
Bobbo S +4 more
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Ticari Buzdolabında R290 Soğutucu Akışkan Performansı
2023In this study, we investigated the impact of the environmentally friendly R290 refrigerant, which has a higher Coefficient of Performance (COP), on the operating performance of the cooling system, as an alternative to the commonly used R404A refrigerant, which has a negative effect on global warming.
Saraç, Turhan, Ünaldı, Mahmut
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Lubricity evaluation of oil–refrigerant mixtures with R134a and R290
International Journal of Refrigeration, 2016Abstract The article presents an assessment method of lubricity properties of oils for refrigeration compressors in a mixture with a refrigerant. The assessment has been based on sample wear volume in the block-on-ring node under the conditions similar to the operation of the compressor following an extensive standstill.
Kasper Górny +3 more
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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ABOUT EFFICIENCY OF MIXTURES R125/R290 AND R134a/R290 AS WORKING MEDIA OF REFRIGERATING PLANTS
2015The thermodynamic behavior of mixtures R125/R290 and R134a/R290 having different composition in saturation state was considered. The existence of aseotropic mixtures containing 0,6 molar part of R125 and 0,4 molar part of R134a was mentioned. The dependences of saturated vapor and liquid temperatures` differences of mixtures on isobars from pressure ...
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Experimental analysis of the use of R290 in a small ice maker
2019In the present paper, an experimental study of the use of R290 in an ice maker is presented. The analysis deals with a vapour compression system that originally works with R404A and produces 85 kg per day of ice with water inlet temperature equal to 10 °C and air temperature equal to 10 °C.
L. Molinaroli +3 more
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PROSPECTS FOR THE USE OF R290 REFRIGERANT IN MARINE REFRIGERATION EQUIPMENT
Journal of Marine Technology and EnvironmentThe need to replace traditional refrigerants in marine refrigeration equipment with low-GWP alternatives is growing due to international climate regulations. This paper discusses the current status and potential of R290 (propane) as a long-term substitute in marine air conditioning systems.
Matvii MALTSEV, Olga KHLIYEVA
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Cascade Refrigeration System with Environment Friendly Refrigerants as R290 and Ammonia
International Journal of Environmental Engineering, 2022V.N. Raibhole, D.A. Kamble
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