Peng-Robinson-based association equation of state for mixtures of hydrofluorocarbon refrigerants
Sign Up to like & getrecommendations! Published in 2019 at "Fluid Phase Equilibria"
DOI: 10.1016/j.fluid.2018.10.004
Abstract: Abstract The objective of this work was to extend to mixtures of hydrofluorocarbon refrigerants a recently developed Peng-Robinson plus association equation of state for those compounds. In that equation of state, two terms constituted the… read more here.
Keywords: 134a hfc; peng robinson; equation; hfc 134a ... See more keywords
Flow boiling heat transfer and pressure drop of refrigerants HFO-1234yf and HFC-134a in small circular tube
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2017.12.161
Abstract: Abstract HFO-1234yf has similar thermodynamic properties to HFC-134a but much lower GWP value. It is expected as a good candidate to replace the refrigerant HFC-134a in the near future. However, only very few papers have… read more here.
Keywords: hfc 134a; flow boiling; boiling heat; heat transfer ... See more keywords
Condensation heat transfer and pressure drop of refrigerants HFO-1234yf and HFC-134a in small circular tube
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2018.07.093
Abstract: Abstract HFO-1234yf has similar thermodynamic properties to HFC-134a but much lower GWP value. It is expected as a good candidate to replace the refrigerant HFC-134a in the near future. However, only very few papers have… read more here.
Keywords: hfc 134a; heat transfer; transfer; heat ... See more keywords
Absorption coefficients, frequency shifts and absorption cross sections measurement versus pressure at room temperature, for hydrofluorocarbon HFC-134a, using a tunable CW CO2 laser
Sign Up to like & getrecommendations! Published in 2018 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2018.03.003
Abstract: Abstract Infrared absorption in the spectral ranges of 934.92–952.89 cm−1, 969.15–982.13 cm−1, 1037.43–1055.62 cm−1 and 1071.88–1084.62 cm−1 versus pressure of hydro fluorocarbon CH2FCF3 was studied using a tunable CW CO2 laser emission on lines from 10P, 10R, 9P and… read more here.
Keywords: absorption; laser; hfc 134a; tunable co2 ... See more keywords
Atmospheric Observation and Emission of HFC-134a in China and Its Four Cities.
Sign Up to like & getrecommendations! Published in 2023 at "Environmental science & technology"
DOI: 10.1021/acs.est.2c07711
Abstract: 1,1,1,2-Tetrafluoroethane (HFC-134a) is widely used as a refrigerant to replace dichlorodifluoromethane (CFC-12), and a small amount of it is used in the foam and medical aerosol sectors, with a high global warming potential and fast-increasing… read more here.
Keywords: emission hfc; four cities; sector; emission ... See more keywords
Thermal analysis on optimizing the capillary tube length of a milk chiller using DC compressor operated with HFC-134a and environment-friendly HC-600a refrigerants
Sign Up to like & getrecommendations! Published in 2019 at "Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering"
DOI: 10.1177/0954408919871385
Abstract: In this work, the thermal analysis on optimizing the capillary tube lengths of a dual circuit refrigeration system was carried out experimentally. Two refrigeration circuits were individually operated using two DC powered compressors (HFC-134a and… read more here.
Keywords: circuit; tube length; capillary tube; hfc 134a ... See more keywords
Energy and exergy analysis on hydrofluoroolefin/ hydrofluorocarbon (HFO/HFC) refrigerant mixtures in low and medium temperature small-scale refrigeration systems
Sign Up to like & getrecommendations! Published in 2019 at "Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering"
DOI: 10.1177/0954408919881306
Abstract: The new refrigerants such as HFO-1234yf and HFO-1234ze have been considered as long-term replacements for HFC-134a to comply with the Kyoto protocol. In small size refrigeration systems, these refrigerants have poor performance than HFC-134a besides… read more here.
Keywords: hfo; hfc 134a; refrigeration systems; performance ... See more keywords
Effect of Mg/Al2O3 and Calcination Temperature on the Catalytic Decomposition of HFC-134a
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DOI: 10.3390/catal9030270
Abstract: This paper evaluated the effect of calcination temperature and the use of Mg/Al2O3 on the decomposition of HFC-134a. Two commercialized catalysts, Al2O3 and Mg/Al2O3, were calcined at two different temperatures (500 and 650 °C) and… read more here.
Keywords: decomposition; calcination temperature; temperature; decomposition hfc ... See more keywords