Changes in the Hydro-mechanical and Thermo-physical Characteristics of Liquid Food Products (for Example, Milk) under the Influence of Natural Surfactants

Bіlonoga, Yuriy; Stybel, V. V.; Lorenzini, Enrico; Maksysko, Oksana; Drachuk, U.

doi:10.18280/ti-ijes.630103

Cited by 4 publications

(5 citation statements)

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“…Similar results were obtained, which differ by 1-2 of a percent. The plate heat exchanger was calculated using the new method using TiO2 nanoparticles in water and in a mixture of EG in water at a ratio of 40:60%, as well as when pumpkin vegetable oil was added to milk with the optimal concentration [49].…”

Section: Discussionmentioning

confidence: 99%

A New Universal Numerical Equation and a New Method for Calculating Heat-Exchange Equipment Using Nanofluids

Bіlonoga¹,

Stybel²,

Maksysko³

et al. 2020

IJHT

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This article analyzes the vast material of works devoted to the use of nanofluids in heat exchange equipment. It is proved that the use of the classical theories and equations for calculating the viscosities and thermal conductivities of nanofluids is not correct, since it does not coincide with the experimental results of most independent authors. A model of the chaotic motion of a nanoparticle is presented taking into account surface tension forces in a liquid coolant. The experimental results of the work of Malaysian and Iran authors on the effect of TiO2 nanoparticles with a concentration of 0.5%; 1.0% and 1.5% in the main liquid solution of ethylene glycol (EG) in water in a volume ratio of 40:60% in terms of heat transfer coefficient are compared with our theoretical studies. The results of the experiments presented in: an increase in heat transfer coefficients by 9.72%, 22.75%, 28.92% for 1.5% volume concentration of TiO2 nanoparticles at a coolant temperature of 30℃, 50℃, 70℃, respectively. Our theoretical result: increase in the obtained heat transfer coefficients by 9.79%, 22.22%, 29.09% according to our formulas (9, 10, 15) for calculating turbulent viscosities and thermal conductivities, which takes into account the effect of surface tension forces on the total flow of nanofluids in the channels of heat exchange equipment. A new method for calculating heat exchange equipment using nanofluids is presented, taking into account the action of surface tension forces, as well as predetermining the calculation of turbulent viscosities and thermal conductivity of nanofluids. A theoretical calculations a plate heat exchangers for a technological task performed by classical and new method is presented. Similar results were obtained, which differ by about 0.5 of a percent. The plate heat exchanger was calculated using a new method using TiO2 nanoparticles in water and in a mixture of EG in water in a ratio of 40:60%, as well as when pumpkin vegetable oil was added to milk with the optimal concentration.

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Section: Discussionmentioning

confidence: 99%

A New Universal Numerical Equation and a New Method for Calculating Heat-Exchange Equipment Using Nanofluids

Bіlonoga¹,

Stybel²,

Maksysko³

et al. 2020

IJHT

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“…Formula (31) clearly shows that the introduction of a small amount of SAS into a liquid food product increases its turbulent thermal conductivity, since they, as a rule, significantly reduce the surface tension coefficient of the coolant. Our previous work [37] is devoted to these and other issues, where a wide range of natural vegetable oils in amounts up to 1% or less was considered as additives to milk. In relation to milk, these vegetable oils are SAS, and their introduction in small quantities helps to increase the nutritional value of milk, since they are source of unsaturated fatty acids and other valuable trace elements that are not synthesized in the human body.…”

Section: Re Prmentioning

confidence: 99%

“…Let us conduct an appropriate express assessment of the effectiveness of pumpkin seed oil use, as the most suitable for milk in terms of SAS and trace element composition [37]. The thermal conductivity of pumpkin seed oil is 3.9 times lower than that of milk (koil=0.146; kmilk(c)=0.5698) [38], the addition of + 0.5% pumpkin seed oil SAS reduces the thermal conductivity milk up to kmilk(с)=0.5562 W m -1 .K -1 .…”

Section: Re Prmentioning

confidence: 99%

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Substantiation of a New Calculation and Selection Algorithm of Optimal Heat Exchangers with Nanofluid Heat Carriers Taking into Account Surface Forces

Bіlonoga¹,

Stybel²,

Maksysko³

et al. 2021

IJHT

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The article examines the problem of correct, accurate calculation and optimization of the choice of heat exchange equipment when using nanofluid heat carriers for heat treatment of liquid food products using milk as an example. To solve this problem, the motion of a metal nanoparticle in a turbulent flow of the main coolant was simulated using the methods of similarity theory, taking into account the action of surface forces in the laminar boundary layer. New formulas are obtained for a qualitative assessment of the average thickness of the laminar boundary layer that appears around a turbulently moving metal nanoparticle. A number of qualitative correlations with other literature sources that explain the behavior of nanoparticles in a turbulent liquid medium are shown. A new approach to heat transfer processes is considered taking into account the theory of J. Boussinesq, which gives an idea of turbulent viscosity and thermal conductivity, as well as a comparison of the resistance forces to the surface forces. The physical meaning of the previously obtained by us new similarity numbers Bl and Blturb. and their application in our new numerical equation for calculating heat exchangers is considered, and a new express method for evaluating the efficiency of using nanofluid heat carriers is proposed. The proposed method of express calculation shows that the mixture H2O + EG (60:40) improves the heat exchange properties of water by + 12.86%, and the mixture (H2O + EG (60:40) + 1.5% TiO2) and (milk + 0.5% pumpkin seed oil) - by + 16.75%, which corresponds to the experiments and our calculations, and the well-known express method based on classical numerical equations shows a deterioration by - 4.5% and, accordingly, by – 1.2%.

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“…The following supporting information can be downloaded at: , Figure S1: Rapid prototyping process; Figure S2: Control of channel depth with a CO 2 laser; Figure S3: Working principle of an oscillator pump; Figure S4: Mixing performance quantification; Figure S5: Series vs. parallel pump configuration; Figure S6: Valve deflection measurement; Figure S7: Experimental setup; Table S1: Iterative design progression; Video S1: Steady state oscillator pump droplet generation from 50 kPa constant vacuum source; Video S2: Electricity free droplet generation from 60 mL syringe pull; Video S3: Droplet generator response time. (References [ 37 , 38 , 39 , 40 ] are cited in the supplementary materials).…”

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confidence: 99%

Phase-Optimized Peristaltic Pumping by Integrated Microfluidic Logic

2022

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Microfluidic droplet generation typically entails an initial stabilization period on the order of minutes, exhibiting higher variation in droplet volume until the system reaches monodisperse production. The material lost during this period can be problematic when preparing droplets from limited samples such as patient biopsies. Active droplet generation strategies such as antiphase peristaltic pumping effectively reduce stabilization time but have required off-chip control hardware that reduces system accessibility. We present a fully integrated device that employs on-chip pneumatic logic to control phase-optimized peristaltic pumping. Droplet generation stabilizes in about a second, with only one or two non-uniform droplets produced initially.

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Changes in the Hydro-mechanical and Thermo-physical Characteristics of Liquid Food Products (for Example, Milk) under the Influence of Natural Surfactants

Cited by 4 publications

References 4 publications

A New Universal Numerical Equation and a New Method for Calculating Heat-Exchange Equipment Using Nanofluids

A New Universal Numerical Equation and a New Method for Calculating Heat-Exchange Equipment Using Nanofluids

Substantiation of a New Calculation and Selection Algorithm of Optimal Heat Exchangers with Nanofluid Heat Carriers Taking into Account Surface Forces

Phase-Optimized Peristaltic Pumping by Integrated Microfluidic Logic

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