Thermal Diffusivity Measurement of Trans-1-chloro-3,3,3-trifluoropropene (R1233zd(E)) and Dodecafluoro-2-methylpentan-3-one (Novec1230) by the Dynamic Light Scattering Method

Tang, Xuyao; Wang, Yang; Cui, Junwei; Hu, Xiaozhen; Bi, Shengshan; Wu, Jiangtao

doi:10.1021/acs.jced.0c00221

Cited by 11 publications

(4 citation statements)

References 29 publications

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“…Miyara et al 5 investigated the viscosities of R-1233zd(E) using a tandem capillary tube method. Tang et al 6 measured the thermal diffusivities of R-1233zd(E) between (303.15 and 393.15) K using a dynamic light scattering method. Lago et al 7 presented speeds of sound for liquid R-1233zd(E) from (273.15 to 353.15) K and pressures of up to 35 MPa by means of the double pulse−echo method.…”

Section: Introductionmentioning

confidence: 99%

Solubility of R-1233zd(E) in PVE 68 Oil and the Oil Presence Impact on Evaporator Performance

Sun

Wang

et al. 2023

J. Chem. Eng. Data

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In this work, solubilities were measured for R-1233zd(E) in PVE 68 oil between (283.15 and 343.15) K using an isochoric saturation method. The nonrandom two liquid (NRTL) model was applied to represent the solubility behavior of the R-1233zd(E)/PVE 68 oil mixture. According to the experimental data, we studied the differences in enthalpies between pure R-1233zd(E) and the R-1233zd(E)/PVE 68 oil mixture as well as the oil effect on the evaporator performance with different superheating and oil circulating mass fractions (C g ). In the pressure−enthalpy−vapor quality diagram, isotherm curves of pure R-1233zd(E) and the R-1233zd(E)/oil mixture have a separation point called the critical vapor quality that is mainly connected to solubility and C g . Moreover, the enthalpy change rate (R h ) and nonevaporation quality (NEQ) are also associated with the solubility and C g , especially at low superheating. A lower solubility and C g will result in higher R h and lower NEQ, which are favorable to the refrigeration cycle.

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Section: Introductionmentioning

confidence: 99%

Solubility of R-1233zd(E) in PVE 68 Oil and the Oil Presence Impact on Evaporator Performance

Sun

Wang

et al. 2023

J. Chem. Eng. Data

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show abstract

“…Miyara et al 10 measured the vapor and liquid viscosities by a tandem capillary tubes method. Tang et al 11 studied the thermal diffusivities of saturated liquid of R-1233zd(E) from (303.15 to 393.15) K using a dynamic light scattering method. Fedele et al 12 reported 94 liquid density points from (283.15 to 363.15) K and 60 pvT points from (308.15 to 373.15) K. Di Nicola et al 13 presented 81 vapor pressure data points between (234.15 and 375.15) K. Romeo et al 14 also measured the liquid-phase densities of R-1233zd(E) between (273.15 and 333.15) K at pressures within 30 MPa.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Phase Equilibrium for R-1233zd(E) with Three Pure Esters between 298.15 and 343.15 K

Sun,

Wang,

Zheng

et al. 2023

J. Chem. Eng. Data

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The increasing concerns of the global warming impact of traditional refrigerants (R-410a, R-245fa, R-134a, R-404a, etc.) drive the requirement for substitutes more compelling. Due to the remarkable properties (near-zero ozone depletion potential, ultralow global warming potential, nonflammable, nontoxic, high normal boiling point, etc.), trans-1-chloro-3,3,3trifluoropropene (R-1233zd(E)) is attracting a great deal of attention in hightemperature heat pumps, chillers, and organic Rankine cycles. To increase the phase-equilibrium database for R-1233zd(E) with lubricants, the vapor−liquid phase equilibrium was measured for R-1233zd(E) in three pure polyol esters (PEC4, PEC6, and PEC8) from 298.15 to 343.15 K using an isochoric saturation method. Phase equilibrium of R-1233zd(E)/oil mixtures was successfully correlated by the NRTL model. The results show that the solubilities increase with increasing pressure and decrease with rising temperature. In addition, no liquid−liquid phase and vapor−liquid−liquid split were found. The solubilities of R-1233zd(E) in different PEC oils indicate that the solubility order increases from PEC4 to PEC8.

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“…Recently, fire extinguishing agents have been replaced by eco-friendly materials, such as HFC-227ea and FK-5-1-1-12, which have a low global warming potential (GWP) and an ozone depletion potential close to almost 0. However, these eco-friendly fire extinguishing agents are difficult to store and utilize due to the low vaporization temperature and high vapor pressure [ 4 , 5 , 6 ]. In order to overcome these disadvantages, methods of using an aerosol system [ 7 ] and encapsulating the fire extinguishing agent with a polymeric material have been proposed [ 8 , 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Double-Layered Polymer Microcapsule Containing Non-Flammable Agent for Initial Fire Suppression

et al. 2022

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Fire in energy storage systems, such as lithium-ion batteries, has been raised as a serious concern due to the difficulty of suppressing it. Fluorine-based non-flammable agents used as internal substances leaked through the fine pores of the polymer outer shell, leading to a degradation of fire extinguishing performance. To improve the durability of the fire suppression microcapsules and the stability of the ouster shell, a complex coacervation was used, which could be microencapsulated at a lower temperature, and the polymer shell was coated with urea-formaldehyde (UF) resin. The outermost UF resin formed elaborate bonds with the gelatin-based shell, and thus, the structure of the outer shell became denser, thereby improving the loss resistance of the inner substance and thermal stability. The double-layered microcapsules had an average particle diameter of about 309 μm, and a stable outer shell formed with a mass loss of 0.005% during long-term storage for 100 days. This study confirmed that the double-layered microcapsules significantly improved thermal stability, resistance to core material loss, core material content and fire suppression performance compared to single wall microcapsules. These results indicated that the double-layered structure was suitable for the production of microcapsules for initial fire suppression, including highly volatile non-flammable agents with a low boiling point.

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Thermal Diffusivity Measurement of Trans-1-chloro-3,3,3-trifluoropropene (R1233zd(E)) and Dodecafluoro-2-methylpentan-3-one (Novec1230) by the Dynamic Light Scattering Method

Cited by 11 publications

References 29 publications

Solubility of R-1233zd(E) in PVE 68 Oil and the Oil Presence Impact on Evaporator Performance

Solubility of R-1233zd(E) in PVE 68 Oil and the Oil Presence Impact on Evaporator Performance

Measurement of Phase Equilibrium for R-1233zd(E) with Three Pure Esters between 298.15 and 343.15 K

Double-Layered Polymer Microcapsule Containing Non-Flammable Agent for Initial Fire Suppression

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