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Общее количество найденных документов : 18
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 1-10    11-18 
1.
Инвентарный номер: нет.
   
   G 24

    Gasanov, B. M.
    Effect of the concentration and size of droplets of the dispersed phase of an emulsion on the character of heat exchange in a boiling emulsion [Electronic resource] / B. M. Gasanov, N. V. Bulanov // High Temperature. - 2014. - Vol. 52, № 1. - С. 86-92. - Bibliogr. : p. 92 (6 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
DROPLETS -- PHASE DISPERSED -- SIZE
Аннотация: Heat transfer from thin platinum wires to emulsions with a low-boiling dispersed phase has been studied experimentally. The appearance, growth, and separation of vapor bubbles at boiling on horizontal and vertical heated surfaces were demonstrated. The dependence of the delay of the beginning of boiling on the concentration of the emulsion and the size of droplets of the dispersed phase were consid

\\\\expert2\\NBO\\High Temperature\\2014, v. 52, N 1, p.86-92.pdf
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2.
Инвентарный номер: нет.
   
   G 24

    Gasanov, B. M.
    Effect of the concentration and size of droplets of the dispersed phase of an emulsion on the character of heat exchange in a boiling emulsion [Electronic resource] / B. M. Gasanov, N. V. Bulanov // High Temperature. - 2014. - Vol. 52, № 1. - С. 86-92. - Bibliogr. : p. 92 (6 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
DROPLETS -- PHASE DISPERSED -- SIZE
Аннотация: Heat transfer from thin platinum wires to emulsions with a low-boiling dispersed phase has been studied experimentally. The appearance, growth, and separation of vapor bubbles at boiling on horizontal and vertical heated surfaces were demonstrated. The dependence of the delay of the beginning of boiling on the concentration of the emulsion and the size of droplets of the dispersed phase were consid

\\\\expert2\\NBO\\High Temperature\\2014, v. 52, N 1, p.86-92.pdf
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3.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    A method of explosive effervescence of disperse-phase droplets for analysis of emulsions [] / N. V. Bulanov, V. A. Khmylnin // Industrial Laboratory. - 1994. - V.60, Is.10. - С. 599-602
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
EFFERVESCENCE EXPLOSIVE -- DISPERSE-PHASE DROPLETS -- EMULSIONS
Аннотация: A method and an experimental setup for dispersion analysis of emulsions based on overheating and explosive effervescence of disperse-phase droplets are described. Formulas are derived and a procedure for determining the fitting parameters for a description of the dispersive composition of an emulsion is given. The maximum count rate was about 500 droplets per second for droplet diameters ranging from 5 to 200 mu m. The method can be automated to handle high-viscosity, opaque, unstable, and heavily contaminated emulsions

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4.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    A method of explosive effervescence of disperse-phase droplets for analysis of emulsions [] / N. V. Bulanov, V. A. Khmylnin // Industrial Laboratory. - 1994. - V.60, Is.10. - С. 599-602
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
EFFERVESCENCE EXPLOSIVE -- DISPERSE-PHASE DROPLETS -- EMULSIONS
Аннотация: A method and an experimental setup for dispersion analysis of emulsions based on overheating and explosive effervescence of disperse-phase droplets are described. Formulas are derived and a procedure for determining the fitting parameters for a description of the dispersive composition of an emulsion is given. The maximum count rate was about 500 droplets per second for droplet diameters ranging from 5 to 200 mu m. The method can be automated to handle high-viscosity, opaque, unstable, and heavily contaminated emulsions

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5.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Results of experimental investigation of heat transfer with emulsions with low-boiling disperse phase [Текст] / N. V. Bulanov, B. M. Gasanov, E. A. Turchaninova // High Temperature. - 2006. - Vol. 44, № 2. - С. 267-282
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
HEAT TRAHSFER
Аннотация: The results are given of a theoretical investigation of heat transfer from thin wires to emulsions in which the disperse phase is low-boiling compared to the dispersion medium. A special feature of heat transfer to such emulsions is observed in the mode of nucleate boiling, when only the droplets of the disperse phase of emulsion are boiling. The transition from the convective mode of heat transfer to nucleate boiling requires high values of temperature gradient ? T = T W ? T 0 at which the temperature of the heat-transfer surface T W is higher than the temperature T S of saturated vapors of the disperse phase by 100 °C and more. Here, T 0 is the temperature of the heat-transfer agent away from the heat-transfer surface. Note that, for pure liquids and solutions, the value of delay of the beginning of boiling ? T i = T W ? T S as a rule does not exceed 1–5 °C. Another feature of heat transfer to the emulsions being treated is a wide temperature range of the mode of nucleate boiling (over 100 °C); the upper limit of this temperature range is defined by the temperature of transition to film boiling of the dispersion medium of the emulsion being investigated that has already boiled by this instant of time. The value of delay of the beginning of boiling is affected significantly by additions of surfactants and adsorbents.

\\\\Expert2\\NBO\\High Temperature\\2006, v.44, p.267.pdf
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6.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Results of experimental investigation of heat transfer with emulsions with low-boiling disperse phase [Текст] / N. V. Bulanov, B. M. Gasanov, E. A. Turchaninova // High Temperature. - 2006. - Vol. 44, № 2. - С. 267-282
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
HEAT TRAHSFER
Аннотация: The results are given of a theoretical investigation of heat transfer from thin wires to emulsions in which the disperse phase is low-boiling compared to the dispersion medium. A special feature of heat transfer to such emulsions is observed in the mode of nucleate boiling, when only the droplets of the disperse phase of emulsion are boiling. The transition from the convective mode of heat transfer to nucleate boiling requires high values of temperature gradient ? T = T W ? T 0 at which the temperature of the heat-transfer surface T W is higher than the temperature T S of saturated vapors of the disperse phase by 100 °C and more. Here, T 0 is the temperature of the heat-transfer agent away from the heat-transfer surface. Note that, for pure liquids and solutions, the value of delay of the beginning of boiling ? T i = T W ? T S as a rule does not exceed 1–5 °C. Another feature of heat transfer to the emulsions being treated is a wide temperature range of the mode of nucleate boiling (over 100 °C); the upper limit of this temperature range is defined by the temperature of transition to film boiling of the dispersion medium of the emulsion being investigated that has already boiled by this instant of time. The value of delay of the beginning of boiling is affected significantly by additions of surfactants and adsorbents.

\\\\Expert2\\NBO\\High Temperature\\2006, v.44, p.267.pdf
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7.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Peculiarities of boiling of emulsions with a low-boiling dispersed phase / N. V. Bulanov, B. M. Gasanov, V. A. Khmylnin // Journal of Engineering Thermophysics. - 2007. - Vol.16, №4. - С. 224-230
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
HEAT TRAHSFER -- LOW TEMPERATURES -- BOILING
Аннотация: The results of an investigation of heat transfer from thin wires to emulsions whose dispersed phase is low-boiling in comparison with its dispersion medium are presented. A peculiarity of heat transfer with such emulsions is observed in the bubble boiling regime when only droplets of the emulsion dispersed phase are boiling. Theoretical and experimental investigations of the activation mechanism of boiling centers have been performed. The critical volume V 0 of the emulsion, with chain nucleation taking place when this volume is exceeded, has been determined. A model of chain activation of low-temperature boiling centers has been developed. The model has been qualitatively confirmed by the experimental data obtained

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8.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Peculiarities of boiling of emulsions with a low-boiling dispersed phase / N. V. Bulanov, B. M. Gasanov, V. A. Khmylnin // Journal of Engineering Thermophysics. - 2007. - Vol.16, №4. - С. 224-230
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
HEAT TRAHSFER -- LOW TEMPERATURES -- BOILING
Аннотация: The results of an investigation of heat transfer from thin wires to emulsions whose dispersed phase is low-boiling in comparison with its dispersion medium are presented. A peculiarity of heat transfer with such emulsions is observed in the bubble boiling regime when only droplets of the emulsion dispersed phase are boiling. Theoretical and experimental investigations of the activation mechanism of boiling centers have been performed. The critical volume V 0 of the emulsion, with chain nucleation taking place when this volume is exceeded, has been determined. A model of chain activation of low-temperature boiling centers has been developed. The model has been qualitatively confirmed by the experimental data obtained

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9.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Peculiarities of boiling of emulsions with a low-boiling disperse phase [Electronic resource] / N. V. Bulanov, B. M. Gasanov // International Journal of Heat and Mass Transfer. - 2008. - Vol. 51, № 7-8. - P1628-1632
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING -- NUCLEATION SITE -- HEAT TRAHSFER -- ACTIVATION OF NUCLEATION SITES -- SUPERHEATED LIQUIDS
Аннотация: The heat transfer from thin wires to emulsions with a disperse phase formed from a liquid whose boiling temperature is much lower than the boiling temperature of the disperse medium was investigated. Experiments were conducted at atmospheric pressure on vertical and horizontal wires from 50 to 100 ?m in diameter with n-pentane/glycerine, diethyl ether/water, and freon-113/water and water/oil emulsions.??It was possible to describe the experimental data obtained by one analytical dependence Nu = AArPrM?1[1 ? exp(?JVt)]. The dependence presented was obtained from the proposed model of the chain branched activation of boiling centers in droplets of a superheated liquid. In this case the coefficient J acquires the meaning of the activation rate of these centers.??

\\\\Expert2\\NBO\\International Journal of Heat and Mass Transfer\\2008, v.51, p.1628.pdf
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10.
Инвентарный номер: нет.
   
   B 93

    Bulanov, N. V.
    Peculiarities of boiling of emulsions with a low-boiling disperse phase [Electronic resource] / N. V. Bulanov, B. M. Gasanov // International Journal of Heat and Mass Transfer. - 2008. - Vol. 51, № 7-8. - P1628-1632
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING -- NUCLEATION SITE -- HEAT TRAHSFER -- ACTIVATION OF NUCLEATION SITES -- SUPERHEATED LIQUIDS
Аннотация: The heat transfer from thin wires to emulsions with a disperse phase formed from a liquid whose boiling temperature is much lower than the boiling temperature of the disperse medium was investigated. Experiments were conducted at atmospheric pressure on vertical and horizontal wires from 50 to 100 ?m in diameter with n-pentane/glycerine, diethyl ether/water, and freon-113/water and water/oil emulsions.??It was possible to describe the experimental data obtained by one analytical dependence Nu = AArPrM?1[1 ? exp(?JVt)]. The dependence presented was obtained from the proposed model of the chain branched activation of boiling centers in droplets of a superheated liquid. In this case the coefficient J acquires the meaning of the activation rate of these centers.??

\\\\Expert2\\NBO\\International Journal of Heat and Mass Transfer\\2008, v.51, p.1628.pdf
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 1-10    11-18 
 
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