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Liquid viscosity of low-GWP refrigerant mixtures (R32 + R1234yf) and (R125 + R1234yf)

Journal of Chemical Thermodynamics, 2015
Abstract In this work, the viscosity of R1234yf, (R32 + R1234yf), and (R125 + R1234yf) in one-phase liquid was measured. The combined expanded uncertainty of viscosity measurement apparatus of confidence of 0.95 (k = 2) is about 2.0%. The measurements of mixtures containing (30.0, 50.0, and 70.0) wt% R32 or R125 were carried out between T = (283.0 ...
Chaobin Dang, Eiji Hihara
exaly   +2 more sources

The refrigerant R1234yf in air conditioning systems

Energy, 2011
Abstract Experiments were conducted for a typical R134a compact European automotive air conditioning system equipped with an internally controlled variable displacement compressor, minichannel condenser, TXV, and minichannel evaporator. A “drop-in” R1234yf system was tested together with two modified R1234yf systems with the primary goal to document ...
Claudio Zilio, , Alberto Cavallini
exaly   +2 more sources

Research on inhibition of flame retardants on flammability of R1234yf

International Journal of Refrigeration, 2020
Abstract R1234yf has attracted wide attention because of its excellent environmental protection performance. However, the potential flammability hazards of R1234yf will affect its use and promotion. This article will focus on the flammability changes of R1234yf before and after adding different flame retardants.
Zhao Yang, Biao Feng
exaly   +2 more sources

Experimental study on the influence of the flame retardants on the flammability of R1234yf

Energy, 2018
Abstract R1234yf has been considered as an alternative refrigerant with the low global warming potential (GWP), but it is flammable. Therefore, it is necessary to study the reduction or inhibition of flammability of R1234yf by different flame retardants.
Zhao Yang, Biao Feng
exaly   +2 more sources

Performance characteristics of R1234yf ejector-expansion refrigeration cycle

Applied Energy, 2014
Abstract With a constant-pressure mixing ejector, the performance characteristics of an ejector-expansion refrigeration cycle (EERC) using R1234yf as refrigerant have been investigated. Also, the performance of R1234yf and R134a in the EERC has been compared. The study shows that, at condensing temperature of 40 °C and evaporation temperature of 5 °C,
Lingbao Wang, Fei Cao, Huashan Li
exaly   +3 more sources

Research on the Thermophysical Properties and Cycle Performances of R1234yf/R290 and R1234yf/R600a

International Journal of Thermophysics, 2021
R134a, commonly used for automotive air conditioning, will be phased out due to its high global warming potential, while R1234yf/R290 and R1234yf/R600a were considered as two potential alternatives owing to their excellent environmental characteristics.
Nuochen Zhang   +3 more
openaire   +1 more source

Investigation on the density of Al2O3/R1234yf, TiO2/R1234yf and CuO/R1234yf nano-refrigerants

Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems, 2022
Nano-enhanced refrigerant is one of the promising heat transfer fluids in refrigeration systems. It has the capability to boost the efficiency of vapour compression refrigeration and air conditioning systems. In heat transfer application, the density of the fluid plays a crucial role in identifying various heat transfer characteristics such as the ...
Bibin BS, Edison Gundabattini
openaire   +1 more source

Phase behavior of R1234yf and R600a in pentaerythritol tetranonanoate

International Journal of Refrigeration, 2020
Abstract 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) and isobutane (R600a) regarded as green refrigerants have received much attention in the refrigeration industry. Phase equilibrium between refrigerant and lubricant has a critical impact on the performance of a compression-refrigeration cycle.
Yanjun Sun   +4 more
openaire   +1 more source

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