Untitled

Ihmels, E. Christian; Gmehling, Jürgen

doi:10.1023/a:1015467523844

Cited by 33 publications

(33 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measurement system was developed in the Ph.D. dissertation of Ihmels [6]. The data for several liquids and liquefied gases (toluene, carbon dioxide, carbonyl sulfide, hydrogen sulfide, sulfur hexafluoride, dinitrogen monoxide, R227ea, and sulfur dioxide) have already been published [5][6][7][8]. Comparisons with reference equations of state for toluene, CO 2 , and SF 6 demonstrated the high accuracy and suitability of this measurement system for the measurement of fluid densities.…”

Section: Density Apparatusmentioning

confidence: 99%

See 1 more Smart Citation

Experimental densities, vapor pressures, and critical point, and a fundamental equation of state for dimethyl ether

Ihmels

Lemmon

2007

Fluid Phase Equilibria

Self Cite

View full text Add to dashboard Cite

Section: Density Apparatusmentioning

confidence: 99%

“…2. The apparatus and procedure of the measurements were described in detail by Ihmels and Gmehling [5,7]. A prototype of a high-pressure high-temperature vibrating-tube densimeter (DMA-HDT, Hastelloy C-276, Stabinger, Austria) is the essential part of the experimental setup.…”

Section: Density Apparatusmentioning

confidence: 99%

Experimental densities, vapor pressures, and critical point, and a fundamental equation of state for dimethyl ether

Ihmels

Lemmon

2007

Fluid Phase Equilibria

Self Cite

View full text Add to dashboard Cite

“…For nitrous oxide, the second and third virial coefficients are reported elsewhere [1], together with the coefficients published in the literature [5][6][7][8][9][10]. For the case of the second virial coefficients, comparisons at the same reduced temperatures showed a good degree of consistency with the other sources of data (taking the mutual uncertainties into account).…”

Section: Resultsmentioning

confidence: 66%

Virial Coefficients from Burnett Measurements for the R23 + N2O System

et al. 2006

View full text Add to dashboard Cite

This paper presents experimental results for the trifluoromethane (R23) + nitrous oxide (N 2 O) system, which has been chosen as a working fluid for low-temperature applications since it might be a valid option for the lowtemperature stage in a cascade cycle. The thermodynamic properties of the binary mixture's constituents are well known from the literature, but no experimental results have been published to date on the PVTx properties of this binary system. PVTx measurements were obtained for the binary R23 + N 2 O system for three isotherms (303, 323, and 343 K), performing 15 Burnett expansions in a range of pressures from about 4400 to 80 kPa. The second and third virial coefficients were derived from experimental results together with the second and third cross virial coefficients. The experimental uncertainties in the second and third virial coefficients were estimated to be within ±1 cm 3 ·mol −1 and ±500 cm 6 ·mol −2 , respectively.

show abstract

“…The second and third virial coefficients for nitrous oxide, together with the coefficients available in the literature [5][6][7][8][9][10], are reported elsewhere [1]. For second virial coefficients the comparisons at the same reduced temperatures showed fair agreement, considering also the mutual uncertainties, with the sources.…”

Section: Resultsmentioning

confidence: 69%

Burnett Measurements and Virial Coefficients for the R32 + N2O System

et al. 2006

View full text Add to dashboard Cite

Experimental results for the difluoromethane (R32) + nitrous oxide (N 2 O) system are presented in this paper. The Burnett apparatus was calibrated using helium, and its performance was confirmed by measurements for pure N 2 O. The values of the virial coefficients for R32 were adopted from previous measurements as the same sample was used in the present study. PVTx measurements were performed for the binary R32 + N 2 O system for four isotherms (303, 323, 343, and 364 K). Twenty Burnett expansions were performed in a pressure range from 5000 to 150 kPa. The second and third virial coefficients along with the cross second and third virial coefficients were derived from experimental results.

show abstract

Untitled

Cited by 33 publications

References 10 publications

Experimental densities, vapor pressures, and critical point, and a fundamental equation of state for dimethyl ether

Experimental densities, vapor pressures, and critical point, and a fundamental equation of state for dimethyl ether

Virial Coefficients from Burnett Measurements for the R23 + N2O System

Burnett Measurements and Virial Coefficients for the R32 + N2O System

Contact Info

Product

Resources

About