Results 41 to 50 of about 1,638 (192)
Performance improvement strategies of R1234yf in vapor compression refrigeration system as a R134a replacement : A review [PDF]
, 2023 R1234yf, a substitute for R134a, shares similar thermodynamic behavior and eco-friendly properties with low global warming potential. However, performance and flammability issues hampered its adoption in vapor compression refrigeration systems (VCRS ...
Ali, Hafiz Muhammad +4 more
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Safety Science and Technology, Volume 1, Issue 3, September 2026.This study investigated the combustion characteristics of mixtures of the environmentally friendly flame retardant HFO‐1225zc with three combustible working fluids (HFO‐1234yf, HFC‐32, and HFO‐1243zf). The flame retardant efficacy of HFO‐1225zc on three working fluids decreases in the order: HFO‐1234yf, HFC‐32, HFO‐UFL1243zf. ABSTRACT The environmental
Biao Feng +8 more
wiley +1 more source
Performance of Automotive Air Conditioning System with R134a and R1234yf
International Journal of Air-Conditioning and Refrigeration, 2020 A steady-state mathematical model of a small-capacity Automotive Air Conditioning System (AACS) working with the refrigerants R134a (1,1,1,2-tetrafluoroethane) and R1234yf (2,3,3,3-tetrafluoropropene) is developed. The model considers the major components of the system, namely, the swash plate compressor with fixed stroke, thermostatic expansion valve (
Yogendra Vasantrao Kuwar +1 more
openaire +1 more source
Environmental Progress &Sustainable Energy, Volume 45, Issue 4, July/August 2026.Abstract The Kigali Amendment's mandate to phase down high‐GWP refrigerants highlights the urgent need for sustainable alternatives in cold climate heat pumps, which are critical for delivering efficient heating in severely cold regions. This study evaluates ultralow‐GWP refrigerants—R‐290, R‐152a, R‐161, R‐1234yf, and R‐1234ze(E)—for application in a ...
Kuanrong Qiu, Martin Thomas
wiley +1 more source
HFO1234yf Condensation Inside A Brazed Plate Heat Exchanger [PDF]
, 2012 This paper presents the heat transfer coefficients and the pressure drop measured during HFO1234yf condensation inside a brazed plate heat exchanger: the effects of saturation temperature, refrigerant mass flux and vapour superheating are investigated ...
Longo, Giovanni A., Zilio, Claudio
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Energy Science &Engineering, Volume 14, Issue 7, Page 3195-3210, July 2026.The explosion hazard of TBP and kerosene mixed vapor in the nuclear fuel reprocessing process is studied. The results enrich the explosion characteristics and explosion limits of TBP‐kerosene, and provide reference value and basis for the safety setting of the operation process and operating environment of nuclear fuel reprocessing plants ABSTRACT As ...
Pincong Wu +6 more
wiley +1 more source
, 2022 The use of refrigerants from the hydrofluorocarbon family has been restricted due to their high global warming potential, and the manufacturers have been using R1234yf recently, a refrigerant from the hydrofluoroolefin family, as a substitute for R134a ...
TAŞDEMİRCİ, ERKUTAY +2 more
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Energy Science &Engineering, Volume 14, Issue 5, Page 2644-2666, May 2026.This review highlights how nano oils and eco‐friendly nano refrigerants enhance energy‐efficient refrigeration by improving thermal conductivity, lubrication, and system performance. The integration of rheological and tribological testing confirms reduced compressor work, better heat transfer, and higher COP using sustainable, low‐GWP refrigerants for ...
Mohammed Dilawar +7 more
wiley +1 more source
Performance Characteristics of Automobile Air Conditioning Using the R134a/R1234yf Mixture. [PDF]
Entropy (Basel), 2019 In this study, the energy and exergy of an automobile refrigeration system using R134a and R134a/R1234yf were analyzed experimentally with respect to outdoor air temperature and compressor speed.
Shin Y, Kim T, Lee A, Cho H.
europepmc +2 more sources
Energy Technology, Volume 14, Issue 4, April 2026.Heat‐pump charging of Carnot batteries with zeotropic large temperature glide CO2–alkane mixtures enables charging from ambient to ≈398.15 K with improved heat‐exchanger temperature matching at moderate pressure ratios. The highest COP occurs near xCO2 ≈ 0.15, whereas cost and throttling losses rise monotonically with CO2 content; butane isomers ...
Majid Zarif Sabbaghnia, Burak Atakan
wiley +1 more source