Results 1 to 10 of about 2,030 (213)

Theoretical analysis of R1234ze(E), R152a, and R1234ze(E)/R152a mixtures as replacements of R134a in vapor compression system [PDF]

open access: yesAdvances in Mechanical Engineering, 2016
In this article, R1234ze(E), R152a, and three mixtures M1, M2, and M3 composed of R152a and R1234ze(E) (in the ratio of 60:40, 50:50, and 40:60, by mass, respectively) as drop-in replacements of R134a in vapor compression system were theoretically ...
Zhaofeng Meng   +3 more
doaj   +4 more sources

Heat Transfer Analysis between R744 and HFOs inside Plate Heat Exchangers [PDF]

open access: yesEntropy, 2022
Plate heat exchangers (PHE) are used for a wide range of applications, thus utilizing new and unique heat sources is of crucial importance. R744 has a low critical temperature, which makes its thermophysical properties variation smoother than other ...
Anas F. A. Elbarghthi   +2 more
doaj   +2 more sources

Investigation of low-GWP working fluids as substitutes for R245fa in organic Rankine cycle application [PDF]

open access: yesHeliyon
This study presents a thermo-economic assessment of three low-global-warming-potential (GWP) substitutes, R1233zd(E), R1234ze(Z) and R1234ze(E), for R245fa used in organic Rankine cycle (ORC) systems, considering two models with different heat sources ...
Min-Hsiung Yang   +2 more
doaj   +2 more sources

Identifying the performance and losses of a scroll compressor with vapour injection and R1234ze(E) [version 2; peer review: 2 approved] [PDF]

open access: yesOpen Research Europe, 2022
This work investigates a vapour injection scroll compressor integrated in a heat pump using the refrigerant R1234ze(E). The water-to-water heat pump was tested under a wide temperature range at the evaporator and condenser sides.
George Meramveliotakis   +2 more
doaj   +2 more sources

Comparison between R134a and R1234ze(E) during Flow Boiling in Microfin Tubes [PDF]

open access: yesFluids, 2021
Environmental concerns are forcing the replacement of commonly used refrigerants, and finding new fluids is a top priority. Soon the R134a will be banned, and the hydro-fluoro-olefin (HFO) R1234ze(E) has been indicated as an alternative due to its ...
Andrea Lucchini   +4 more
doaj   +2 more sources

Thermal Performance Analysis of Low-GWP Refrigerants in Automotive Air-Conditioning System

open access: yesAdvances in Materials Science and Engineering, 2020
The energy and exergy of low-global warming potential (GWP) refrigerants were investigated experimentally and theoretically. Refrigerants with a modest GWP100 of  ≤ 150 can be sufficient for bringing down emissions which were concerned for the automotive
Yousuf Alhendal   +3 more
doaj   +2 more sources

Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube

open access: yesAdvances in Mechanical Engineering, 2015
The saturated flow boiling heat transfer coefficients and frictional pressure drops characteristics of R1234ze(E), R600a, and L-41b (R1234ze(E)/R32 (27/73 mass %)) inside an 8 mm inner diameter horizontal tube were investigated.
Jinyou Qiu   +5 more
doaj   +2 more sources

Functional Equations for Calculating the Properties of Low-GWP R1234ze(E) Refrigerant [PDF]

open access: yesEnergies, 2020
Legal requirements for the use of refrigerants increasingly restrict the use of high-global warming potential (GWP) refrigerants. As a result, there is a growing interest in natural refrigerants and in those belonging to the hydrofluoroolefins (HFO ...
Piotr Życzkowski   +4 more
doaj   +2 more sources

A Study on New Refrigerant R1234ze(E) and Its Mixtures

open access: yesZhileng xuebao, 2015
Over the past few years, more attention have been paid to the new low GWP refrigerant R1234ze(E), as a kind of ideal alternative of R134a. But, thermodynamic property and transfer characteristic are not good enough.
Qiu Jinyou   +4 more
doaj   +1 more source

Experimental Study on the Solubility of R1234ze(E) in Polyol Ester Oils

open access: yesZhileng xuebao, 2020
R1234ze(E)(1,1,1,3-tetrafluoropropene) is extremely environmental-friendly and is currently considered as one of the alternative refrigerants. In this paper, the solubility of R1234ze(E) in two polyol ester oils was measured at temperatures ranging from ...
Zhao Wenzhong   +7 more
doaj   +1 more source

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