Speed of sound and derivative properties of hydrofluoroether fluid HFE-7500 under high pressure

Muñoz-Rujas, Natalia; Bazile, Jean Patrick; Aguilar, Fernando; Galliéro, Guillaume; Montero, Eduardo A.; Daridon, Jean-Luc

doi:10.1016/j.jct.2017.04.007

Cited by 11 publications

(6 citation statements)

References 18 publications

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“…new data for batch no. 21099 are in excellent agreement with the data by Rausch et al [2] and Muñoz-Rujaz et al [41] over the whole temperature range. The densities of the other two batches are slightly shifted by about 0.4 to 0.5 kg • m −3 which is considered to be a batch dependency as observed for HFE-7300.…”

Section: Temperature Correlation For Saturated Liquid Density Of Hfessupporting

confidence: 88%

“…Our aim was to inspect the degree of degassing depending on the number of vacuum cycles and its inŕuence on the measured liquid density. The samples, tempered inside a refrigerator at a constant temperature of 278 K, were taken from the 1-liter bottle, quickly degassed by different numbers of vacuum cycles in a syringe and applied directly 2) for HFE-7500 from the densities taken from literature [2,38,3,6,41,36], new data and 3M correlation [31]. Black dashed lines indicate the expanded relative deviation of Eq.…”

Section: Sample Degassingmentioning

confidence: 99%

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Influence of Isomeric Composition and Sample Handling on the Liquid Density of Hydrofluorethers Measured by Vibrating Tube Densimeter at 0.1 MPa

Prokopová

Blahut

Hajduch

et al. 2023

Preprint

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Hydrofluoroethers (HFEs) represent a new family of promising engineering fluids suitable for technical cleaning, cooling of electronic and magnetic devices or as admixtures in refrigerant blends. Here we report accurate data for the liquid density at 0.1\,MPa and temperatures from $273.15\,\mathrm{K}$ to $343.15\,\mathrm{K}$ for a series of five HFEs; namely HFE-7000, HFE-7100, HFE-7200, HFE-7300, and HFE-7500. A highly sensitive vibrating tube densimeter with a borosilicate glass U-tube calibrated according to the procedure by Prokopov\'{a} et al. [J. Chem. Thermodyn. 173 (2022) 106855] provided density data with an expanded uncertainty ($k=2$) of $0.13\,\mathrm{kg\cdot m^{-3}}$. Influences such as sample degassing, water content or sample temperature before its dosing into the densimeter are discussed. Thanks to the high sensitivity of the used densimeter, an unexpected shift in the density of different HFE-7100 and HFE-7200 liquid samples was detected. Unlike other HFEs, HFE-7100 and HFE-7200 are mixtures of two hardly separable isomers, which were so far considered having identical thermophysical properties. Utilizing nuclear magnetic resonance spectroscopy, the ratio of \textit{n}-isomer and \textit{iso}-isomer was inspected for various liquid samples. In the range of \textit{iso}-isomer mole fraction from 0.61 to 0.77, the new measurements revealed density differences of more than $5\,\mathrm{kg\cdot m^{-3}}$ in case of HFE-7100 and of about $3\,\mathrm{kg\cdot m^{-3}}$ in case of HFE-7200. Consequently, for some applications the properties of different HFE isomers cannot be considered identical. The Rackett-type correlation for the saturated liquid density was fitted using the new and the literature data.

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Section: Temperature Correlation For Saturated Liquid Density Of Hfessupporting

confidence: 88%

Section: Sample Degassingmentioning

confidence: 99%

Influence of Isomeric Composition and Sample Handling on the Liquid Density of Hydrofluorethers Measured by Vibrating Tube Densimeter at 0.1 MPa

Prokopová

Blahut

Hajduch

et al. 2023

Preprint

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“…Here, a Tait-like equation was used for this purpose, as well as to obtain the derivative properties. This equation was used in some of our previous works. ,, The equation is as follows ρ ( T , p ) = ρ 0 ( T ) 1 − C nobreak0em0.1em⁡ ln ( B false( T false) + p B false( T false) + 0.1 MPa ) where ρ 0 ( T ) = A 0 + A 1 T + A 2 T 2 + A 3 T 3 B ( T ) = B 0 + B 1 T + B 2 T 2 …”

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

(ρ, T, p) Measurements of the Methyl Nonafluorobutyl Ether (HFE-7100) + 1-Propanol Mixture at Pressures up to 70 MPa and Temperatures from 298.15 to 393.15 K

Muñoz-Rujas,

Rubio-Pérez,

García-Alonso

et al. 2023

J. Chem. Eng. Data

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The characterization of the thermophysical properties of new environmentally friendly fluids, such as hydrofluoroether fluids (HFEs) and their mixtures with other compounds, is necessary nowadays in order to properly design the machinery and piping networks involved in their utilization. However, scarce data concerning these kinds of fluids are actually available. In this work, new experimental high pressure density data (742 points) for the binary system x HFE-7100 + (1 − x) 1-propanol are presented. This property was measured by using an Anton Paar vibrating tube densitometer in the temperature range of 298.15−393.15 K and in the pressure interval of 0.1−70 MPa. A comparison between our experimental high pressure density data and those found in the literature was carried out only for the pure compounds, since no density data for the binary mixture were found. To perform this comparison, we used a Tait-like equation in order to correlate our results to those of the literature. Concerning the experimental density data, the derivative properties of isothermal compressibility, κ T , and isobaric expansion, α P , were determined over the same pressure and temperature ranges. Excess molar volumes of the binary system were also determined and compared with those of the mixture x HFE-7100 + (1 − x) 2-propanol published in one of our previous works.

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“…The temperature of the fluid is controlled within ±0.1 K using a thermostatic bath. Density values used to deduce dynamic viscosity from kinematic viscosity were determined experimentally and were reported in our previous papers. − By following this procedure, the dynamic viscosity is obtained with an uncertainty smaller than 1% . For pressure P = 20 MPa and above, measurements have been carried out using the falling body apparatus as described in section .…”

Section: Results and Discussionmentioning

confidence: 99%

High-Pressure Viscosity Measurements for the Binary Mixture HFE-7500 + Diisopropyl Ether

et al. 2019

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In this work, high-pressure viscosity measurements for seven compositions of the binary mixture (x) HFE-7500 + (1 − x) diisopropyl ether were carried out. A set of 163 points have been measured covering the temperature range (293.15−353.15) K and pressure up to 100 MPa by using a falling body viscometer with an experimental uncertainty of ±2%. At 0.1 MPa, the viscosity determinations were conducted by using an Ubbelohde capillary viscometer with an uncertainty of ±1%. The experimental high-pressure viscosity data were correlated as a function of pressure and temperature by employing a Vogel−Fulcher−Tammann equation.

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Speed of sound and derivative properties of hydrofluoroether fluid HFE-7500 under high pressure

Cited by 11 publications

References 18 publications

Influence of Isomeric Composition and Sample Handling on the Liquid Density of Hydrofluorethers Measured by Vibrating Tube Densimeter at 0.1 MPa

Influence of Isomeric Composition and Sample Handling on the Liquid Density of Hydrofluorethers Measured by Vibrating Tube Densimeter at 0.1 MPa

(ρ, T, p) Measurements of the Methyl Nonafluorobutyl Ether (HFE-7100) + 1-Propanol Mixture at Pressures up to 70 MPa and Temperatures from 298.15 to 393.15 K

High-Pressure Viscosity Measurements for the Binary Mixture HFE-7500 + Diisopropyl Ether

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