Measurements of PvT properties, saturated densities, and critical parameters of R1132(E)

Sakoda, Naoya; Perera, Uthpala A.; Thu, Kyaw; Higashi, Yukihiro

doi:10.1016/j.ijrefrig.2022.05.012

Cited by 8 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The new measurements for the critical temperature, density and pressure are summarized in Table 3 and compared with the previous values from the literature as well as predictions using group contributions. The Ambrose group contribution method was chosen since it could predict all three parameters and it had the smallest combined errors based on the previous work [ 19 , 22 ].…”

Section: Resultsmentioning

confidence: 99%

PvT Properties and Thermodynamic Property Correlations for the Low Global Warming Potential Hydrofluoroolefin Refrigerant R-1132a (1,1-Difluoroethene)

et al. 2023

View full text Add to dashboard Cite

R-1132a is increasingly being considered as a low global warming potential component in alternative mixtures to R-23 in specialized low temperature and ultra-low temperature refrigeration systems. Though the thermodynamic properties of R-1132a were investigated in several studies up to 2018, reinvestigations have been carried out in recent years. In order to contribute toward these renewed measurements, the critical parameters of R-1132a were experimentally re-determined. Thirty-two vapor pressures from 240 K to the critical temperature, fifteen saturated vapor and six saturated liquid densities above 254 K and the PvT properties in both the vapor phase (98 points) and liquid phase (34 points) from densities of 50 kg·m −3 to 760 kg·m −3 were also measured. Specific correlations for each of these properties were optimized and compared to previously available data from the literature. Additionally, the Peng–Robinson equation of state was used to represent the aforementioned properties and further utilized to determine the enthalpy and entropy of R-1132a. Supplementary Information The online version contains supplementary material available at 10.1007/s10765-023-03184-4.

show abstract

Section: Resultsmentioning

confidence: 99%

PvT Properties and Thermodynamic Property Correlations for the Low Global Warming Potential Hydrofluoroolefin Refrigerant R-1132a (1,1-Difluoroethene)

et al. 2023

View full text Add to dashboard Cite

show abstract

Vapour Pressure Measurements and Correlations for 1,1-Difluoroethene (R-1132a) at 240–296 K using a Newly Developed Isochoric Apparatus

et al. 2023

View full text Add to dashboard Cite

Thermophysical Properties of Low GWP Refrigerants: An Update

et al. 2023

View full text Add to dashboard Cite

In the last decades, the industry of HVAC&R has faced continuous changes trying to identify environmentally friendly refrigerants for the numerous applications of the sector. However, the amount of low GWP fluids still available as potential refrigerants is limited to some natural fluids and, among synthetic chemicals, to hydrofluoroolefins (HFO). The knowledge of the thermophysical properties of these compounds and the evaluation of their energy efficiency in experimental apparatuses is essential to properly address the selection of the most suitable fluids. However, regarding the wide majority of HFOs, the information on the thermophysical properties, especially for the blends, are still scarce and require further research. In this work, an analysis of the possible substitutes and the available experimental data sets on their thermophysical properties was carried out to find out for which fluids further studies are needed to obtain an accurate representation of their thermophysical properties. Specifically, for 21 pure refrigerants, an overview of the thermodynamic (critical point, psat, PVT, heat capacity and speed of sound) and transport properties (λ, μ, σ) data published in the peer reviewed literature was provided. In addition, a more comprehensive analysis was carried out for four fluids (R1243zf, R1233zd(E), R1336mzz(Z), and R1224yd(Z)), for which major efforts have been made in the last 4 years to investigate the above thermophysical properties. Although an increasing amount of data sets on thermophysical properties have been compiled in recent years, the present study indicates that research efforts are still needed, especially on transport properties, as only 4 of the fluids of interest for the present research have been fully investigated (R1234yf, R1234ze(E), R1233zd(E), R1243zf), while other 4 (R1234ze(Z), R1336mzz(Z), R1224yd(Z), R1336mzz(E)) have been almost completely characterised.

show abstract

Measurements of PvT properties, saturated densities, and critical parameters of R1132(E)

Cited by 8 publications

References 14 publications

PvT Properties and Thermodynamic Property Correlations for the Low Global Warming Potential Hydrofluoroolefin Refrigerant R-1132a (1,1-Difluoroethene)

PvT Properties and Thermodynamic Property Correlations for the Low Global Warming Potential Hydrofluoroolefin Refrigerant R-1132a (1,1-Difluoroethene)

Vapour Pressure Measurements and Correlations for 1,1-Difluoroethene (R-1132a) at 240–296 K using a Newly Developed Isochoric Apparatus

Thermophysical Properties of Low GWP Refrigerants: An Update

Contact Info

Product

Resources

About