TY - JOUR
T1 - Measurement and Correlation of Vapor-Liquid Equilibrium for R124 (1-Chloro-1,2,2,2-Tetrafluoroethane)-NMP (N-Methyl-2-Pyrrolidone) and R124-DMF (N,N-Dimethylformamide) Mixtures
AU - Xu, Shiming
AU - Wang, Wei
AU - Wu, Xi
AU - Hu, Jungyong
AU - Jiang, Mengnan
N1 - Funding Information:
This work is financially supported by National Natural Science Foundation of China (51376032,51776029), China Postdoctoral Science Foundation (2016M591427), and Doctoral Startup Funds of Liaoning Province (201601053).
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/10/12
Y1 - 2017/10/12
N2 - Vapor-liquid equilibrium data of binary working pairs play a crucial part in the research of absorption process and absorption refrigeration technology. In this paper, the VLE data of binary mixtures, R124-NMP and R124-DMF, were measured in a temperature range from 303.15 to 363.15 K, using a VLE measurement apparatus. The activity coefficient model of five-parameter nonrandom two liquid (NRTL) was selected to correlate all the VLE data acquired by measurement. The maximum relative deviation of the pressure between the measurement data and calculated data for R124-NMP and R124-DMF were 3.80% and 3.27% respectively, and the average relative deviation of the pressure were 1.25% and 1.17% respectively. The correlated results coincide well with the measurement data and show that the VLE characteristics of R124-NMP and R124-DMF mixtures have a negative deviation from Raoul's law. Comparing three absorbents, DMF, DMAC and NMP, the activity coefficient of R124 in DMF is largest, that in DMAC is second, and that in NMP is smallest.
AB - Vapor-liquid equilibrium data of binary working pairs play a crucial part in the research of absorption process and absorption refrigeration technology. In this paper, the VLE data of binary mixtures, R124-NMP and R124-DMF, were measured in a temperature range from 303.15 to 363.15 K, using a VLE measurement apparatus. The activity coefficient model of five-parameter nonrandom two liquid (NRTL) was selected to correlate all the VLE data acquired by measurement. The maximum relative deviation of the pressure between the measurement data and calculated data for R124-NMP and R124-DMF were 3.80% and 3.27% respectively, and the average relative deviation of the pressure were 1.25% and 1.17% respectively. The correlated results coincide well with the measurement data and show that the VLE characteristics of R124-NMP and R124-DMF mixtures have a negative deviation from Raoul's law. Comparing three absorbents, DMF, DMAC and NMP, the activity coefficient of R124 in DMF is largest, that in DMAC is second, and that in NMP is smallest.
UR - http://www.scopus.com/inward/record.url?scp=85031323057&partnerID=8YFLogxK
U2 - 10.1021/acs.jced.7b00444
DO - 10.1021/acs.jced.7b00444
M3 - Journal article
AN - SCOPUS:85031323057
SN - 0021-9568
VL - 62
SP - 3414
EP - 3422
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 10
ER -