Review on Applications of Zeotropic Mixtures

Bai, Mengjie; Zhao, Li; Zhao, Ruikai

doi:10.1007/s11630-022-1569-x

Cited by 22 publications

(5 citation statements)

References 124 publications

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“…The equivalent substance reducing ratios f and h relate the reference fluid to the fluid of interest using a ratio of critical parameters (T c , ρ c ), and they are defined by (27) (28) The shape functions θ(t, ρ) and ϕ(T, ρ) can be considered as functions of both temperature and density. The dilute-gas viscosity can be calculated after the Capmann−Enskog theory 28 Ω (2,2) is called the integral and can be calculated with the empirical correlation by Neufeld et al 29 (30)…”

Section: Calculation Methods For Thementioning

confidence: 99%

“…Thermophysical properties have a large influence on the design and efficiency of thermodynamic cycles like heat pumps, refrigeration systems, or power generation systems like the organic Rankine cycle (ORC). Furthermore, in order to increase the overall efficiency of such thermodynamic cycles and replacing hydrofluorocarbon (HFC) refrigerants, zeotropic fluid mixtures can be used, according to a study from Xu et al, 1 Bai et al, 2 Heredia-Aricapa et al, 3 and Modi and Haglind. 4 Due to the use of fluid mixtures, an increase in efficiency is possible compared to the most efficient pure component caused by a better glide adjustment during condensation and evaporation resulting from the nonisothermal phase change of the zeotropic mixture.…”

Section: Introductionmentioning

confidence: 99%

“…(2,2) is called the integral and can be calculated with the empirical correlation by Neufeld et al29 …”

mentioning

confidence: 99%

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Density and Viscosity of Linear Siloxanes and Their Mixtures

et al. 2023

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Density and viscosity measurements are performed for ethanol, water, hexamethyldisiloxane (MM), octamethyltrisiloxane (MDM), decamethyltetrasiloxane (MD2M), and their mixtures (ethanol/water, MM/MDM, MM/MD2M, MDM/MD2M) at 100 kPa at different temperatures (293–423 K) and mixture compositions. To measure the density and viscosity, an IMETER measuring system with a combined dynamic and static force measurement method, a density meter with an oscillating U-tube measuring method, and a rheometer with a double-gap measuring system were used. The experimentally determined data for the pure substances show a very good agreement with literature data. However, there is a strong deviation of the mixture viscosity between max 7% for MM/MDM and 31% for MM/MD2M compared to Refprop v.10.0. In order to enable an improvement in the calculation of the density and viscosity for the mixtures, specific parameters for the Jouyban–Acree model are developed for all mixtures and thereby, a better description of the density and viscosity for the mixtures could be achieved.

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Section: Calculation Methods For Thementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Density and Viscosity of Linear Siloxanes and Their Mixtures

et al. 2023

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“…During pharmaceutical and chemical production, many azeotropes are often formed; these mixtures cannot be effectively separated by using conventional distillation methods. Therefore, ED is frequently employed in chemical separation to separate azeotropic systems or mixtures with relative volatility close to 1. , To cater to the advancements in various fields and generate substantial economic value, ED has seen significant development over the past few decades, with the technology consistently achieving progressive breakthroughs and continuously improving towards sustainability.…”

Section: Extractive Distillation Process Designmentioning

confidence: 99%

Design and Multiple Performance Evaluation of Green Sustainable Process for Azeotropes Separation via Extractive Distillation

Zhong,

Cheng,

Dai

et al. 2023

ACS Sustainable Chem. Eng.

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Multicomponent liquid mixtures, particularly azeotropes, are extensively utilized in the chemical, petroleum, pharmaceutical, and other processing industries. Energy-saving and efficient separation of azeotropes holds significant value for the design and development of sustainable industrial processes. Extractive distillation (ED) has consistently played a pivotal role in azeotrope separation. We offer a broad and comprehensive review that encompasses recent progress in multiple aspects of ED, including the screening of entrainers, process design, enhancement schemes, dynamic control strategies, and environmental assessment. Initially, we delved into the application of quantum chemistry calculations and molecular dynamics simulation for screening suitable entrainers. We then elucidate the design principles and forms of two distinct types of ED processes. Subsequently, we explore the intensification mechanisms of the ED process through coupling mechanisms, such as heat integration and the combination of ED with other distillation processes. We also summarize the recent improvements in dynamic control strategies for various ED processes. Lastly, we evaluate various aspects of ED from the perspectives of environmental impact, economic viability, and exergy analysis. This study investigates the challenges, prospects, and emerging trends of ED technology for the separation of multicomponent azeotropes.

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“…According to Bai et al, Modi and Haglind, Heredia-Aricapa et al, and Harby zeotropic fluid mixtures can be used to improve the overall efficiency, yet the development and extension of precise calculation methods for pure substances and fluid mixtures are required for the evaluation of these entire cycle processes. Furthermore, thermodynamic as well as transport properties play an important role in the prediction of pure and mixture heat transfer coefficients and therefore in the design of the heat exchangers according to studies of Weith et al and Heberle et al To calculate the heat transfer coefficients of fluid mixtures for boiling, correlations as the ones of Schlunder and other authors , are used.…”

Section: Introductionmentioning

confidence: 99%

Measurements of Thermophysical Properties of Ethanol + Hexamethyldisiloxane and Ethanol + Octamethyltrisiloxane Mixtures in the Temperature Range of 293–343 K at 100 kPa

Arnautovic,

Zimmermann,

Hamza

et al. 2023

J. Chem. Eng. Data

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Due to its advantageous combination of individual properties, the utilization of zeotropic mixtures as working fluids can improve the overall efficiency in various thermodynamic cycle processes, such as organic Rankine cycle processes or Kalina processes. Therefore, the properties such as density, viscosity, and surface tension are measured for ethanol, hexamethyldisiloxane (MM), octamethyltrisiloxane (MDM), and their mixtures ethanol/MM and ethanol/MDM at 100 kPa and at different temperatures (293–343 K) and compositions. The measured fluid properties are investigated with different experimental systems: an IMETER measuring system is used for all three mentioned properties. Additionally, the density is determined by a density meter with an oscillating U-tube and the surface tension by a drop shape analyzer system. For the mixtures of ethanol/MM and ethanol/MDM, neither literature data exist nor distinct mixture parameters in REFPROP v.10.0 are available, but the present experimental results are compared with different mixing rules. Furthermore, specific parameters are developed with the Jouyban-Acree model in order to enable a calculation of the presented thermophysical properties for the given mixtures.

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Review on Applications of Zeotropic Mixtures

Cited by 22 publications

References 124 publications

Density and Viscosity of Linear Siloxanes and Their Mixtures

Density and Viscosity of Linear Siloxanes and Their Mixtures

Design and Multiple Performance Evaluation of Green Sustainable Process for Azeotropes Separation via Extractive Distillation

Measurements of Thermophysical Properties of Ethanol + Hexamethyldisiloxane and Ethanol + Octamethyltrisiloxane Mixtures in the Temperature Range of 293–343 K at 100 kPa

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