Results 1 to 10 of about 271 (169)
Identifying the performance and losses of a scroll compressor with vapour injection and R1234ze(E) [version 2; peer review: 2 approved] [PDF]
Open 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 +5 more sources
Heat Transfer Analysis between R744 and HFOs inside Plate Heat Exchangers [PDF]
Entropy, 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]
HeliyonThis 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
Theoretical analysis of R1234ze(E), R152a, and R1234ze(E)/R152a mixtures as replacements of R134a in vapor compression system [PDF]
Advances 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 +2 more sources
A review of refrigerant R1234ze(E) recent investigations [PDF]
Applied Thermal Engineering, 2016 The authors thankfully acknowledge the “Ministerio de Educación, Cultura y Deporte” (Grant Number FPU12/02841) for supporting this work through “Becas y Contratos de Formación de Profesorado Universitario del Programa Nacional de Formación de Recursos Humanos de Investigación del ejercicio 2012”.
Joaquin Navarro-Esbrí +2 more
exaly +3 more sources
Comparison between R134a and R1234ze(E) during Flow Boiling in Microfin Tubes [PDF]
Fluids, 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
Advances 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
International Journal of Refrigeration, 2016 Abstract The low-global warming potential (GWP) refrigerant of R1234ze(E) is considered to be a prospective alternative to conventional R134a for car air conditioners, whereas the isomer R1234ze(Z) and R1233zd(E) are anticipated to be the low-GWP alternatives to R245fa used in high-temperature heat pumps and organic Rankine cycles.
Chieko Kondou
exaly +2 more sources
Functional Equations for Calculating the Properties of Low-GWP R1234ze(E) Refrigerant [PDF]
Energies, 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
Experimental evaluation of system modifications to increase R1234ze(E) cooling capacity [PDF]
Applied Thermal Engineering, 2017 Abstract The GWP limitations are being progressively introduced in Europe through Regulation EU No 517/201, phasing out R134a in most of its refrigeration and air conditioning applications. Pure hydrofluoroolefins are proposed to substitute this fluid, however generally system modifications are needed to achieve a good performance.
Joaquin Navarro-Esbrí +2 more
exaly +2 more sources