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Общее количество найденных документов : 28
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1.

Вид документа :
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Koverda V. P.
Заглавие : Vitrification and crystallization of low-temperature amorphous condensates of water and methane-water mixture
Место публикации : Russian Journal of Physical Chemistry A. - 2012. - Vol.86, №2. - С. 229-234
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): vitrification--crystallization--gas hydrates
Аннотация: Low-temperature condensates of water and water-methane mixture are studied in the temperature range of 65-200 K. Amorphous samples are obtained by molecular beam deposition under vacuum conditions on the substrate cooled with liquid nitrogen. The vitrification and crystallization temperatures are determined from the changes in the dielectric properties of the condensates upon heating. The kinetics of crystallization of amorphous water layers is studied by differential thermal analysis. The temperature conditions for the growth of thick methane crystalline hydrate layers during the low-temperature condensation of molecular water-gas mixture beams are found
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2.

Вид документа :
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Koverda V. P.
Заглавие : Vitrification and crystallization of low-temperature amorphous condensates of water and methane-water mixture
Место публикации : Russian Journal of Physical Chemistry A. - 2012. - Vol.86, №2. - С. 229-234
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): vitrification--crystallization--gas hydrates
Аннотация: Low-temperature condensates of water and water-methane mixture are studied in the temperature range of 65-200 K. Amorphous samples are obtained by molecular beam deposition under vacuum conditions on the substrate cooled with liquid nitrogen. The vitrification and crystallization temperatures are determined from the changes in the dielectric properties of the condensates upon heating. The kinetics of crystallization of amorphous water layers is studied by differential thermal analysis. The temperature conditions for the growth of thick methane crystalline hydrate layers during the low-temperature condensation of molecular water-gas mixture beams are found
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3.

Вид документа : Статья из журнала
Шифр издания : 53/B 27
Автор(ы) : Bartuli E., Vershinin S. V., Maydanik Yu. F.
Заглавие : Visual and instrumental investigations of a copper-water loop heat pipe
Место публикации : International Journal of Heat and Mass Transfer. - 2013. - Vol.61, №1. - С. 35-40
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): condensation--copper-water loop heat pipe--flat gap condenser
Аннотация: Visual and instrumental investigations of the processes of condensation and redistribution of a working fluid in a loop heat pipe have been carried out. This paper presents the results of an experimental investigation of the heat transfer and hydrodynamics during the condensation of water vapor in a flat gap condenser measuring 80 × 40 × 1 mm. Investigations have been conducted at a condenser cooling temperature of 20, 40 and 60 °. During all operating modes a stratified two-phase flow and film condensation have been observed. The temperature field in the condenser has been measured, and the heat-transfer coefficients and the thermal resistances have been determined
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4.

Вид документа : Статья из журнала
Шифр издания : 53/B 27
Автор(ы) : Bartuli E., Vershinin S. V., Maydanik Yu. F.
Заглавие : Visual and instrumental investigations of a copper-water loop heat pipe
Место публикации : International Journal of Heat and Mass Transfer. - 2013. - Vol.61, №1. - С. 35-40
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): condensation--copper-water loop heat pipe--flat gap condenser
Аннотация: Visual and instrumental investigations of the processes of condensation and redistribution of a working fluid in a loop heat pipe have been carried out. This paper presents the results of an experimental investigation of the heat transfer and hydrodynamics during the condensation of water vapor in a flat gap condenser measuring 80 × 40 × 1 mm. Investigations have been conducted at a condenser cooling temperature of 20, 40 and 60 °. During all operating modes a stratified two-phase flow and film condensation have been observed. The temperature field in the condenser has been measured, and the heat-transfer coefficients and the thermal resistances have been determined
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5.

Вид документа :
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Reshetnikov A. V., Koverda V. P.
Заглавие : Synthesis of methane hydrate at low-temperature condensation of molecular beams
Место публикации : Doklady Physics. - 2010. - Vol.55, №8. - С. 388-390
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): amorphous solid water--ice
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6.

Вид документа :
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Reshetnikov A. V., Koverda V. P.
Заглавие : Synthesis of methane hydrate at low-temperature condensation of molecular beams
Место публикации : Doklady Physics. - 2010. - Vol.55, №8. - С. 388-390
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): amorphous solid water--ice
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7.

Вид документа :
Шифр издания : 53/S 82
Автор(ы) : Becker S., Vershinin S. V., Sartre V., Laurien E., Bonjour J., Maydanik Yu. F.
Заглавие : Steady state operation of a copper–water LHP with a flat-oval evaporator
Место публикации : Applied Thermal Engineering. - 2011. - Vol.31, №5. - С. 686-695
Примечания : Библиогр.: с. 695 (24 ref.)
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): loop heat pipe--heat trahsfer--experimental study
Аннотация: In order to dissipate the heat generated by electronic boxes in avionic systems, a copper–water LHP with a flat-oval evaporator was fabricated and tested at steady state. The LHP consists of a flat shaped evaporator, 7 mm thick, including compensation chamber with attached heat exchanger. The condenser is cooled by forced convection of liquid. The variable parameters are the heat sink and ambient temperatures (20 and 55 °C), the orientation (−90° to +90° in two perpendicular planes) and the power input (0–100 W). Evaporator wall temperatures are higher when the evaporator is placed above the condenser. For heat sink and ambient temperature of 20 °C the evaporator wall temperature does not vary much with heat load for all measured elevations. But it fluctuates at heat sink and ambient temperature equal to 55 °C when the evaporator is placed below the condenser. The LHP total thermal resistance is governed by the condenser resistance. It decreases with increasing heat load, whatever the operating conditions, because the part of the condenser internal surface area used for condensation increases too. A minimum thermal resistance of 0.2 K/W was obtained. The maximum thermal resistance was 2.7 K/W
\\\\expert2\\NBO\\Applied Thermal Engineering\\2011, v. 31, p.686.pdf
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8.

Вид документа :
Шифр издания : 53/S 82
Автор(ы) : Becker S., Vershinin S. V., Sartre V., Laurien E., Bonjour J., Maydanik Yu. F.
Заглавие : Steady state operation of a copper–water LHP with a flat-oval evaporator
Место публикации : Applied Thermal Engineering. - 2011. - Vol.31, №5. - С. 686-695
Примечания : Библиогр.: с. 695 (24 ref.)
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): loop heat pipe--heat trahsfer--experimental study
Аннотация: In order to dissipate the heat generated by electronic boxes in avionic systems, a copper–water LHP with a flat-oval evaporator was fabricated and tested at steady state. The LHP consists of a flat shaped evaporator, 7 mm thick, including compensation chamber with attached heat exchanger. The condenser is cooled by forced convection of liquid. The variable parameters are the heat sink and ambient temperatures (20 and 55 °C), the orientation (−90° to +90° in two perpendicular planes) and the power input (0–100 W). Evaporator wall temperatures are higher when the evaporator is placed above the condenser. For heat sink and ambient temperature of 20 °C the evaporator wall temperature does not vary much with heat load for all measured elevations. But it fluctuates at heat sink and ambient temperature equal to 55 °C when the evaporator is placed below the condenser. The LHP total thermal resistance is governed by the condenser resistance. It decreases with increasing heat load, whatever the operating conditions, because the part of the condenser internal surface area used for condensation increases too. A minimum thermal resistance of 0.2 K/W was obtained. The maximum thermal resistance was 2.7 K/W
\\\\expert2\\NBO\\Applied Thermal Engineering\\2011, v. 31, p.686.pdf
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9.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Properties of gas hydrates formed by nonequilibrium condensation of molecular beams [Электронный ресурс]
Место публикации : High Temperature. - 2014. - Vol. 52, № 6. - С. 830-839
Систем. требования: http://download.springer.com/static/pdf/706/art%253A10.1134%252FS0018151X14050046.pdf?auth66=1427190695_f46e11cc1867f9174e766f05ba570465&ext=.pdf
Примечания : Bibliogr. : p. 838-839 (36 ref.). - 24.03.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): glass-transition --amorphous solids--aqueous-solutions
Аннотация: Low-temperature crystallization of amorphous materials has been analyzed theoretically taking into account nonstationary nucleation. The kinetics of crystallization of amorphous water layers, formed by depositing molecular beams on a substrate cooled by liquid nitrogen, has been investigated by differential thermal analysis. The conditions of gas hydrate formation in low-temperature amorphous-ice layers saturated with carbon dioxide have been studied. The glass-transition and crystallization temperatures of the gas hydrates have been determined from the change in dielectric properties upon heating. Under the deep-metastability conditions, crystallization of water-gas layers leads to the formation of crystallohydrates. Gas molecules are captured by the avalanche-like nucleation of crystallization centers and, therefore, are not displaced by the moving crystal-melt interface. Gas-hydrate samples formed in nonequilibrium water-gas layers are convenient for studying their thermophysical properties
\\\\expert2\\nbo\\High Temperature\\2014, v. 52, N 6, p.830-839.pdf
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10.

Вид документа : Статья из журнала
Шифр издания : 53/F 17
Автор(ы) : Faizullin M. Z., Vinogradov A. V., Koverda V. P.
Заглавие : Properties of gas hydrates formed by nonequilibrium condensation of molecular beams [Электронный ресурс]
Место публикации : High Temperature. - 2014. - Vol. 52, № 6. - С. 830-839
Систем. требования: http://download.springer.com/static/pdf/706/art%253A10.1134%252FS0018151X14050046.pdf?auth66=1427190695_f46e11cc1867f9174e766f05ba570465&ext=.pdf
Примечания : Bibliogr. : p. 838-839 (36 ref.). - 24.03.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): glass-transition --amorphous solids--aqueous-solutions
Аннотация: Low-temperature crystallization of amorphous materials has been analyzed theoretically taking into account nonstationary nucleation. The kinetics of crystallization of amorphous water layers, formed by depositing molecular beams on a substrate cooled by liquid nitrogen, has been investigated by differential thermal analysis. The conditions of gas hydrate formation in low-temperature amorphous-ice layers saturated with carbon dioxide have been studied. The glass-transition and crystallization temperatures of the gas hydrates have been determined from the change in dielectric properties upon heating. Under the deep-metastability conditions, crystallization of water-gas layers leads to the formation of crystallohydrates. Gas molecules are captured by the avalanche-like nucleation of crystallization centers and, therefore, are not displaced by the moving crystal-melt interface. Gas-hydrate samples formed in nonequilibrium water-gas layers are convenient for studying their thermophysical properties
\\\\expert2\\nbo\\High Temperature\\2014, v. 52, N 6, p.830-839.pdf
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