Results 131 to 140 of about 271 (169)
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Hazard evaluation of R32/R1234ze(E) cloud explosion
International Journal of Refrigeration, 2020Abstract This paper is aimed at evaluating characteristics of R32/R1234ze(E) cloud explosion. The flame morphologies and explosion pressure are obtained experimentally and the laminar burning velocity is analyzed thermally and chemically. The results indicated that with the increase of equivalence ratio, the limiting oxygen content of xE=10 ...
Qixuan Liu +5 more
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Measurements of Surface Tension of R1234yf and R1234ze(E)
Journal of Chemical & Engineering Data, 2017An experimental apparatus based on the differential capillary rise method for measuring the surface tension was built up and verified. The surface tensions of R1234yf and R1234ze(E) were measured from 242 to 365 K and 242 to 380 K, respectively. The surface tension data were correlated as a function of temperature, and the average absolute deviations ...
Xiaoming Zhao +3 more
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International Journal of Refrigeration, 2013
Abstract This experimental study measured and compared the heat transfer coefficients during in-tube evaporation of R1234ze(E), R32, the nearly azeotropic HFC refrigerant blend R410A and a zeotropic mixture R1234ze(E)/R32 (55/45 mass %) inside a water heated double tube heat exchanger.
Md. Anowar Hossain +3 more
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Abstract This experimental study measured and compared the heat transfer coefficients during in-tube evaporation of R1234ze(E), R32, the nearly azeotropic HFC refrigerant blend R410A and a zeotropic mixture R1234ze(E)/R32 (55/45 mass %) inside a water heated double tube heat exchanger.
Md. Anowar Hossain +3 more
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pVTx properties of binary R1234ze(E)/R600a system
The Journal of Chemical Thermodynamics, 2017Abstract The gaseous pVTx properties of trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) + 2-methylpropane (R600a) mixtures were measured in temperatures from 280.15 to 330.15 K and corresponding pressures from 138 to 930 kPa and the compositions of R1234ze(E) from 0.65 to 0.90 mass fraction using the Burnett isothermal expansion method.
Rui Cao, Yingxia Qi, Rishuai Chen
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Impact of oil presence on the evaporator enthalpy working with R1234ze(E) and R1234yf
International Journal of Refrigeration, 2021Abstract R1234ze(E) and R1234yf, as green refrigerants, have received more and more attention in recent years. To better understand the performance of the evaporator working with a refrigerant/lubricating oil mixture, the solubilities of R1234ze(E)/POE85 and R1234yf/POE85 were measured using the isochoric saturation method in the temperature range ...
Yanjun Sun +4 more
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Flow visualization of R1234ze(E) in a 0.643 mm microchannel tube
International Journal of Heat and Mass Transfer, 2019Abstract This paper presents the discussion of regimes of two-phase flow of R1234ze(E) in a 24-port microchannel tube with average hydraulic diameter of 0.643 mm, obtained by visualization. The experiment is conducted in the same facility in the previous work for R32 (Li and Hrnjak, 2019). The conditions cover mass flux from 50 to 225 kg m−2 s−1. The
Houpei Li, Pega Hrnjak
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Numerical investigation on the condensation of R134a, R1234ze(E) and R450A in mini-channels
International Journal of Refrigeration, 2021Abstract R450A is one of R134a substitutions owing to its low GWP and similar refrigeration performance. The existing researches are mostly about its performance in refrigeration systems. This paper focuses on its heat transfer characteristics in condensation.
Yuce Liu +5 more
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Retrofitting of R-22 Air-Conditioning System with R1234ze(E)
2019In this study, the effect on energy parameters and total equivalent warming impact (TEWI) using R1234ze(E) as a substitute for R22 in an air-conditioning device was investigated. The R22 system was retrofitted with R1234ze(E) changing compressor oil. The experimental data was obtained for three different ambient temperatures (30, 35 and 40 °C).
Devecioğlu, Atilla G., Oruç, Vedat
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R1234ze(E) flow boiling inside a 3.4 mm ID microfin tube
International Journal of Refrigeration, 2014R1234ze(E) has a ...
DIANI, ANDREA +2 more
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Experimental investigation on the viscosity of [Hmim][Tf2N] saturated with R1234ze(E) or R1234yf
International Journal of Refrigeration, 2020Abstract The working pairs of refrigerant/ionic liquids have been proposed and considered as good candidates to substitute the traditional H2O/LiBr and NH3/H2O in the absorption refrigeration cycle. The viscosities of refrigerant/ionic liquid mixtures have greatly influence on the heat transfer and the flow behavior of the fluids and the performance ...
Yao Zhang, Xiucan Jia, Xiaopo Wang
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