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Общее количество найденных документов : 28
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 1-10    11-20   21-28 
1.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation at retrograde condensation [Electronic resource] / V. G. Baidakov, G. Sh. Boltachev // AIP Conference Proceedinds "Nucleation and atmospheric aerosols 2000" : 15th International Conference. - Rolla, Missouri (USA), 2000. - Vol. 534. - С. 295
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATIONS -- CONDENSATION -- SURFACE TENSION
Аннотация: A binary Van-der-Waals solution is considered. Within the framework of the Gibbs and Van-der-Waals capillary theories under the conditions of constancy of the temperature and the composition the size dependences of surface tension are calculated for critical nuclei of liquid and vapor. The phenomenon of “closure” of size dependences and the presence anomalously of high maximums on them are established.

\\\\expert2\\nbo\\AIP Conf. Proceedings, 2000\\2000. V. 534. P. 295.pdf
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2.
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   B 16

    Baidakov, V. G.
    Nucleation at retrograde condensation [Electronic resource] / V. G. Baidakov, G. Sh. Boltachev // AIP Conference Proceedinds "Nucleation and atmospheric aerosols 2000" : 15th International Conference. - Rolla, Missouri (USA), 2000. - Vol. 534. - С. 295
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATIONS -- CONDENSATION -- SURFACE TENSION
Аннотация: A binary Van-der-Waals solution is considered. Within the framework of the Gibbs and Van-der-Waals capillary theories under the conditions of constancy of the temperature and the composition the size dependences of surface tension are calculated for critical nuclei of liquid and vapor. The phenomenon of “closure” of size dependences and the presence anomalously of high maximums on them are established.

\\\\expert2\\nbo\\AIP Conf. Proceedings, 2000\\2000. V. 534. P. 295.pdf
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3.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation at retrograde condensation [] / V. G. Baidakov, G. Sh. Boltachev // AIP Conference Proceedings. - 2000. - Vol. 534, Is. 1. - 295-298: graph. . - ISSN 0094-243X
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- CONDENSATION -- SURFACE TENSION -- RETROGRADE CONDENSATION
Аннотация: A binary Van-der-Waals solution is considered. Within the framework of the Gibbs and Van-der-Waals capillary theories under the conditions of constancy of the temperature and the composition the sise dependences of surface tension s(R) are calculated for critical nuclei of liquid and vapor. The phenomenon of "closure" of size dependences s(R) and the presence anomalously of high maximums on them are established

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4.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation at retrograde condensation [] / V. G. Baidakov, G. Sh. Boltachev // AIP Conference Proceedings. - 2000. - Vol. 534, Is. 1. - 295-298: graph. . - ISSN 0094-243X
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- CONDENSATION -- SURFACE TENSION -- RETROGRADE CONDENSATION
Аннотация: A binary Van-der-Waals solution is considered. Within the framework of the Gibbs and Van-der-Waals capillary theories under the conditions of constancy of the temperature and the composition the sise dependences of surface tension s(R) are calculated for critical nuclei of liquid and vapor. The phenomenon of "closure" of size dependences s(R) and the presence anomalously of high maximums on them are established

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5.
Инвентарный номер: нет.
   
   B 27

    Bartuli, E.
    Visual and instrumental investigations of a copper-water loop heat pipe [Электронный ресурс] / E. Bartuli, S. V. Vershinin, Yu. F. Maydanik // International Journal of Heat and Mass Transfer. - 2013. - Vol.61, №1. - P35-40
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
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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6.
Инвентарный номер: нет.
   
   B 27

    Bartuli, E.
    Visual and instrumental investigations of a copper-water loop heat pipe [Электронный ресурс] / E. Bartuli, S. V. Vershinin, Yu. F. Maydanik // International Journal of Heat and Mass Transfer. - 2013. - Vol.61, №1. - P35-40
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
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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7.
Инвентарный номер: нет.
   
   C 51

    Chernysheva, M. A.
    Heat transfer during condensation of moving steam in a narrow channel / M. A. Chernysheva, S. V. Vershinin, Yu. F. Maydanik // International Journal of Heat and Mass Transfer. - 2009. - Vol.52, №11-12. - С. 2437-2443
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
INTUBE CONDENSATION -- TWO-PHASE FLOW -- LOOP HEAT PIPE
Аннотация: The paper presents the results of experimental investigation of heat transfer and hydrodynamics during condensation of moving steam in a narrow channel of square cross-section 2 mm × 2 mm. The channel had a serpentine shape, the channel length was 660 mm. An experimental cell simulated conditions of heat transfer in the condenser of loop heat pipes. The steam velocity at the channel inlet ranged from 13 to 52 m/s, the pressure was 1 atm. The temperature of the cooling water varied from 70 to 95 °C. The annular flow pattern was noted in the whole range of the regime parameters. There was a clear boundary between the condensation zone and the zone occupied by the condensed phase downstream. Temperature has measured along the channel, and the heat-transfer coefficients have been determined. The coefficient values varied from 10,000 to 55,000 W/K m2 depending on the steam velocity at the channel inlet and the cooling temperature. The efficiency of the condenser – heat exchanger has been investigated

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8.
Инвентарный номер: нет.
   
   C 51

    Chernysheva, M. A.
    Heat transfer during condensation of moving steam in a narrow channel / M. A. Chernysheva, S. V. Vershinin, Yu. F. Maydanik // International Journal of Heat and Mass Transfer. - 2009. - Vol.52, №11-12. - С. 2437-2443
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
INTUBE CONDENSATION -- TWO-PHASE FLOW -- LOOP HEAT PIPE
Аннотация: The paper presents the results of experimental investigation of heat transfer and hydrodynamics during condensation of moving steam in a narrow channel of square cross-section 2 mm × 2 mm. The channel had a serpentine shape, the channel length was 660 mm. An experimental cell simulated conditions of heat transfer in the condenser of loop heat pipes. The steam velocity at the channel inlet ranged from 13 to 52 m/s, the pressure was 1 atm. The temperature of the cooling water varied from 70 to 95 °C. The annular flow pattern was noted in the whole range of the regime parameters. There was a clear boundary between the condensation zone and the zone occupied by the condensed phase downstream. Temperature has measured along the channel, and the heat-transfer coefficients have been determined. The coefficient values varied from 10,000 to 55,000 W/K m2 depending on the steam velocity at the channel inlet and the cooling temperature. The efficiency of the condenser – heat exchanger has been investigated

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9.
Инвентарный номер: нет.
   
   D 63

   
    Disintegration of flows of superheated liquid films and jets [Electronic resource] / A. N. Pavlenko, V. P. Koverda, A. V. Reshetnikov, A. S. Surtaev, A. N. Tsoi, N. A. Mazheiko, K. A. Busov, V. N. Skokov // Journal of Engineering Thermophysics. - Bibliogr. : p. 192-193 (65 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CYLINDRICAL CHANNEL -- EXPERIMENTAL INVESTIGATIONs -- BOILING INCIPIENCE
Аннотация: This paper represents results on investigating the dynamics of boiling and disintegration of superheated liquid films and jets. The first part deals with experimental study of boiling liquid outflow through short cylindrical and slit channels. Evolution of disintegration of a hot water jet flow is observed both at low and moderate superheating and at high and limit superheating, and also for vaporization mechanisms corresponding to these superheatings. Peculiarities of disintegration of jets through slit and cylindrical channels are noticed. Results on measuring the reactive thrust of the jet through a slit channel under different geometrical conditions behind the channel outlet are represented. The 1/f fluctuations in transient regimes of superheated liquid boiling and in transient regimes of behavior of the jet shape are found. The second part of this article represents results on experimental investigation of nonsteady heat transfer and dynamics of the development of crisis phenomena at boiling of a falling subcooled liquid film in the conditions of stepwise heat release. The experimental data were obtained using synchronized high-speed infrared thermography and video. It is shown that with growth and condensation of vapor bubbles, on the liquid film interface appear large-amplitude waves that lead to considerably increasing local intensity of heat transfer. New data on the boiling incipience temperature in a subcooled liquid film, depending on the heat flux density, are obtained. It is found that the development of boiling crisis is a result of appearance of local dry patches and their subsequent growth by the mechanism of longitudinal thermal conductivity in the heat transfer wall as the equilibrium heat flux density is exceeded

\\\\expert2\\NBO\\Journal of Engineering Thermophysics\\2013, V.22, N 3. P. 174-193.pdf
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10.
Инвентарный номер: нет.
   
   D 63

   
    Disintegration of flows of superheated liquid films and jets [Electronic resource] / A. N. Pavlenko, V. P. Koverda, A. V. Reshetnikov, A. S. Surtaev, A. N. Tsoi, N. A. Mazheiko, K. A. Busov, V. N. Skokov // Journal of Engineering Thermophysics. - Bibliogr. : p. 192-193 (65 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CYLINDRICAL CHANNEL -- EXPERIMENTAL INVESTIGATIONs -- BOILING INCIPIENCE
Аннотация: This paper represents results on investigating the dynamics of boiling and disintegration of superheated liquid films and jets. The first part deals with experimental study of boiling liquid outflow through short cylindrical and slit channels. Evolution of disintegration of a hot water jet flow is observed both at low and moderate superheating and at high and limit superheating, and also for vaporization mechanisms corresponding to these superheatings. Peculiarities of disintegration of jets through slit and cylindrical channels are noticed. Results on measuring the reactive thrust of the jet through a slit channel under different geometrical conditions behind the channel outlet are represented. The 1/f fluctuations in transient regimes of superheated liquid boiling and in transient regimes of behavior of the jet shape are found. The second part of this article represents results on experimental investigation of nonsteady heat transfer and dynamics of the development of crisis phenomena at boiling of a falling subcooled liquid film in the conditions of stepwise heat release. The experimental data were obtained using synchronized high-speed infrared thermography and video. It is shown that with growth and condensation of vapor bubbles, on the liquid film interface appear large-amplitude waves that lead to considerably increasing local intensity of heat transfer. New data on the boiling incipience temperature in a subcooled liquid film, depending on the heat flux density, are obtained. It is found that the development of boiling crisis is a result of appearance of local dry patches and their subsequent growth by the mechanism of longitudinal thermal conductivity in the heat transfer wall as the equilibrium heat flux density is exceeded

\\\\expert2\\NBO\\Journal of Engineering Thermophysics\\2013, V.22, N 3. P. 174-193.pdf
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