Particle Size Characteristics of Ice Slurry Treated with Surfactants and Brines

Suzuki, Hiroshi; Nakayama, Kosuke; Komoda, Yoshiyuki; Usui, Hiromoto; Okada, Kazuto; Fujisawa, Ryo

doi:10.1252/jcej.06we251

Cited by 16 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, as demonstrated by our repeated experiments on the vacuum method, first, the ice‐making process with ethanol was precarious; second, it was difficult for the binary ice to form after the addition of NaCl. The results of ethanol were consistent with Reference . Moreover, Reference showed that both supercooling release and ice formation were delayed by roughly 200 seconds.…”

Section: Introductionsupporting

confidence: 89%

“…In practical applications, it is inevitable to face the problem of how to effectively capture water vapor to maintain vacuum. Most research on capturing water vapor focused on condensation, usually by vapor compression refrigeration or liquid nitrogen . The condensation could produce a positive effect, but the size was large and the cost was high.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental research on titanium dioxide nanofluid in vacuum flash evaporation

2020

View full text Add to dashboard Cite

This study is purposed to conduct experimental investigation into the characteristics of vacuum flash evaporation with nanofluid under adsorption conditions, with the effects of nanoparticle concentration, surfactant concentration, and nanofluid stability taken into consideration. By measuring absorbency, solute concentration, and sedimentation graph, a new nanofluid with excellent dispersion was developed for the vacuum ice-making system. It has been demonstrated that the low concentration of additive is conductive to not only the maintenance of vacuum but also the generation of binary ice. For nanofluid, there are two distinct freezing stages in the process of vacuum flash evaporation. The supercooling stage of nanofluid is delayed with the increase of surfactant concentration, whereas the TiO 2 nanofluid applied to the vacuum icemaking system under adsorption shows stability. Moreover, it is indicated that, for the vacuum ice-making system with TiO 2 nanofluid, the pH level is around 8.5, the surfactant is sodium dodecyl benzene sulfonate-span 60 (SDBS-SPAN), the ratio of SDBS to SPAN is about 10:7, the concentration of TiO 2 nanoparticle is around 0.20 wt%, and the ratio of TiO 2 nanoparticle to SDBS-SPAN is about 10:5. Compared with pure water, undercooling is reduced by 77.92%; the ice packing factor and thermal conductivity are increased by 40.61% and 67.27%, respectively. The results of test and analysis can be applied to conduct further research on vacuum flash evaporation. K E Y W O R D S adsorption, binary ice, flash evaporation, nanofluid, vacuum

show abstract

Section: Introductionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Experimental research on titanium dioxide nanofluid in vacuum flash evaporation

2020

View full text Add to dashboard Cite

show abstract

“…In addition, the particles agglomerate and disperse in the slurry, imparting non-Newtonian characteristics to the slurry. [5][6][7][8][9] To increase slurry fluidity, the addition of surfactants that form drag-reducing rod-like micelles [10][11][12][13][14][15] , polymers 3,16) , and some types of brines 1,9,17,18) have been tested to prevent particle agglomeration. These additives also enhance the non-Newtonian behavior of the slurries.…”

Section: Introductionmentioning

confidence: 99%

“…For example, ice/water slurries have been previously employed in lower temperature applications. [1][2][3]5,16,18,19) Since ice has a large latent heat of 334 kJ kg -1 at 0 ºC, the ice slurries are used for food cold chains. Much research has been performed on the heat transfer characteristics of ice slurries, on techniques for preventing the agglomeration of ice particles, and on techniques to increase fluidity.…”

Section: Introductionmentioning

confidence: 99%

“…In these studies, surfactants, some types of brines, and poly vinyl alcohol (PVA) have been tested to prevent agglomeration. 3,[16][17][18]20) Aluminum ammonium sulfate dodecahydrate (ammonium alum hydrate) slurry is a promising latent heat medium for high-temperature systems. However, there exist the significant issues with this medium at high temperature with respect to crystal agglomeration, growth, and sedimentation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Crystal Growth and Viscosity Behaviors of Ammonium Alum Hydrate Solution with PVA in Shear Flow

Toyoda

Hidema

Suzuki

et al. 2014

J. Soc. Rheol., Jpn

Self Cite

View full text Add to dashboard Cite

Experimental investigation of additives enhanced vacuum flash evaporation for binary ice generation

Zheng

Zhang

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

In this study, an experimental investigation was conducted into the characteristics of different varieties of additives (including CaCl2, ethanol, and TiO2 nanoparticles) in the vacuum ice‐making system under adsorption condition. The concentration of CaCl2, ethanol, and TiO2 nanoparticles were treated as experimental variables, while the supercooling degree, ice packing factor (IPF), flashing rate, thermal conductivity, and latent heat were taken as evaluation parameters. According to the experimental results, 0.20 wt% TiO2 nanoparticles and 1 wt% CaCl2 are applicable as additive, the former is superior to the latter, and ethanol is not suitable for use as additive. Under the optimal conditions, compared with distilled water, the supercooling degree, IPF, and thermal conductivity of TiO2 nanofluids are improved by 77.92%, 40.61%, and 57.23%, respectively; for CaCl2 solution, the supercooling degree and IPF are improved by 9.96% and 84.67%, respectively. Furthermore, though the flashing rate increases with the addition of additives, the flashing driving force remains sufficient. The latent heat of nanofluids is barely affected by the addition of nanoparticles. As the CaCl2 concentration is on the rise, both the thermal conductivity and the latent heat of CaCl2 solution show a decreasing trend.

show abstract

Particle Size Characteristics of Ice Slurry Treated with Surfactants and Brines

Cited by 16 publications

References 6 publications

Experimental research on titanium dioxide nanofluid in vacuum flash evaporation

Experimental research on titanium dioxide nanofluid in vacuum flash evaporation

Crystal Growth and Viscosity Behaviors of Ammonium Alum Hydrate Solution with PVA in Shear Flow

Experimental investigation of additives enhanced vacuum flash evaporation for binary ice generation

Contact Info

Product

Resources

About