Центральная Научная Библиотека УрО РАН

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   P 31

    Pastukhov, V. G.
    Adaptation of loop heat pipes to zero-g conditions / V. G. Pastukhov, Yu. F. Maydanik, Y. G. Fershtater // 6th European Symposium on Space Environmental Control Systems: Noordwijk, Netherlands, 20-22 may 1997 . - 1997. - Vol.400. - С. 385-391

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- HEAT-TRANSPORT -- THERMOCAPILLARY PHENOMENA
Аннотация: Loop heat pipes (LHPs) posses a great variety of valuable properties, which make them quite promising for application both on the Earth and in space. Among these are the LHP high heat-transport capacity at an any orientation in the field of mass forces, good mass-and-size parameters and the possibility of an arbitrary configuration of transport lines. At the same time such a drawback of LHPs of the conventional type as the instability of start up and operation in the region of low heat loads reduces their performance. The problem is connected, in a general case, with the unfavourable distribution of the vapor and the liquid phases of the working fluid in the evaporator. There is reason to believe that the LHP operation can also be significantly affected by zero-g conditions, in which the distribution of a working fluid is pre-determined only by the action of surface forces and the thermocapillary phenomena. The paper performs a general analysis of the necessary conditions imposed on the construction of LHP and some designs that contribute to the retention of serviceability in zero-g conditions at low heat loads. It gives the results of laboratory investigations of an adapted ammonia LHP with a heat-transfer capacity up to 2 kWxm

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   A 53


    An experimental investigation and modelling of the thermodynamic properties of R245fa/compressor oil solutions [Текст] / S. N. Ancherbak, Yu. Semenyuk, P. V. Skripov, V. P. Zhelezny // Compressors 2006, International Conference on Compressors and Coolants, 6th, Casta Papiernicka, Slovakia, Sept. 27-29, 2006. - 2006. - С. zhelezny245/1-zhelezny245/9

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
THERMOPHYSICAL PROPERTIES

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   M 19

    Maydanik, Yu. F.
    Capillary-pump loop for systems of thermal regulation of spacecraft [Text] / Yu. F. Maydanik, Y. G. Fershtater, K. Goncharov // Proceedings 4th European Symposium on Space Environmental Control Systems (Florence, Italy, 1991). - 1991. - P87-92

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
КОНТУР КАПИЛЛЯРНОЙ ПРОКАЧКИ -- СИСТЕМА ТЕРМИЧЕСКОГО РЕГУЛИРОВАНИЯ -- АППАРАТ КОСМИЧЕСКИЙ -- КОСМИЧЕСКИЙ АППАРАТ

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   B 16

    Baidakov, V. G.
    Experimental study of superheated cryogenic liquid [Text] / V. G. Baidakov, A. M. Kaverin, I. I. Sulla // 14th International Cryogenic Engineering Conference and Cryogenic Materials Conference (Ukraine, Kiev, 1992, 8-12 June). - 1992. - P52

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
жидкости криогенные -- жидкости перегретые

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   F 75


    Forecasting of calibration intervals of standard measures a microwave [Электронный ресурс] / I. Yu. Blinov, Yu. A. Palcyun, A. M. Kaverin, I. A. Ryzhkov, S. V. Vladimirova // 2010 10th International Conference on Actual Problems of Electronic Instrument Engineering Proceedings, APEIE. - 2010. - art. № 5677299. - P96-97

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
THE STANDARD COAXIAL MEASU -- THE FORECASTING OF CALIBRATION INTERVALS
Аннотация: In the report questions of forecasting of a calibration intervals of a standard coaxial measures are considered.

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10.

11.

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   H 65


    High heat flux loop heat pipes / M. T. North, D. B. Sarraf, J. H. Rosenfeld, Yu. F. Maydanik, S. V. Vershinin // 6th European Symposium on Space Environmental Control Systems: Noordwijk, Netherlands, 20-22 may 1997 . - 1997. - Vol. 400. - С. 371-376

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- POWER LOADS -- GRAVITATIONAL HEADS
Аннотация: Loop Heat Pipes (LHPs) can transport very large thermal power loads, over long distances, through flexible, small diameter tubes and gravitational heads. While recent transported as much as 1500 W, the peak heat flux through a LHP's evaporator has been limited to about 0.07 MW/m(2). This limitation is due to the arrangement of vapor passages next to the heat load which is one of the conditions necessary to ensure self priming of the device. This paper describes work aimed at raising this limit by threefold to tenfold. Two approaches were pursued. One optimized the vapor passage geometry for the high heat flux conditions. The geometry improved the heat flow into the wick and working fluid. This approach also employed a finer pored wick to support higher vapor flow losses. The second approach used a bidisperse wick material within the circumferential vapor passages. The bidisperse material increased the thermal conductivity and the evaporative surface area in the region of highest heat flux, while providing a flow path for the vapor. Proof-of-concept devices were fabricated and tested for each approach. Both devices operated as designed and both demonstrated operation at a heat flux of 0.70 MW/m(2) This performance exceeded the known state of the art by a factor of more than six for both conventional heat pipes and for loop heat pipes using ammonia. In addition, the bidisperse-wick device demonstrated boiling heat transfer coefficients up to 100,000 W/m(2).K, and the fine pored device demonstrated an orientation independence with its performance essentially unaffected by whether its evaporator was positioned above, below or level with the condenser

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12.

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   H 65


    High heat flux loop heat pipes / M. T. North, D. B. Sarraf, J. H. Rosenfeld, Yu. F. Maydanik, S. V. Vershinin // SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM (STAIF-97), PTS 1-3: 1ST CONFERENCE ON FUTURE SCIENCE & EARTH SCIENCE MISSIONS; 1ST CONFERENCE ON SYNERGISTIC POWER & PROPULSION SYSTEMS TECHNOLOGY; 1ST CONFERENCE ON APPLICATIONS OF THERMOPHYSICS IN MICROGRAVITY; 2ND CONFERENCE ON COMMERCIAL DEVELOPMENT OF SPACE; - 2ND CONFERENCE ON NEXT GENERATION LAUNCH SYSTEMS; 14TH SYMPOSIUM ON SPACE NUCLEAR POWER AND PROPULSION, ALBUQUERQUE, 26-30 JAN, 1997 . - 1997. - Vol.387. - С. 561-566

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- THERMAL POWER LOADS -- VAPOR FLOW LOSSES
Аннотация: Loop Heat Pipes (LHPs) can transport very large thermal power loads, over long distances, through flexible, small diameter tubes and against high gravitational heads. While recent LHPs have transported as much as 1500 W, the peak heat flux through a LHP's evaporator has been limited to about 0.07 MW/m(2). This limitation is due to the arrangement of vapor passages next to the heat load which is one of the conditions necessary to ensure self priming of the device. This paper describes work aimed at raising this limit by threefold to tenfold. Two approaches were pursued. One optimized the vapor passage geometry for the high heat flux conditions. The geometry improved the heat flow into the wick and working fluid. This approach also employed a finer pored wick to support higher vapor flow losses. The second approach used a bidisperse wick material within the circumferential vapor passages. The bidisperse material increased the thermal conductivity and the evaporative surface area in the region of highest heat flux, while providing a flow path for the vapor. Proof-of-concept devices were fabricated and tested for each approach. Both devices operated as designed and both demonstrated operation at a heat flux of 0.70 MW/m(2). This performance exceeded the known state of the art by a factor of more than six for both conventional heat pipes and for loop heat pipes using ammonia. In addition, the bidisperse-wick device demonstrated boiling heat transfer coefficients up to 100,000 W/m(2) K, and the fine pored device demonstrated an orientation independence with its performance essentially unaffected by whether its evaporator was positioned above, below or level with the condenser

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13.

14.

15.

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   I-60


    Influence of admixtures of the compressor oil to the enthalpy of working fluid in evaporator [Текст] / V. P. Zhelezny, P. V. Zhelezny, P. V. Skripov, V. F. Vozniy, D. A. Procenko, S. N. Ancherbak // Compressors 2004, International Conference on Compressors and Coolants, 5th, Casta Papiernicka, Slovakia, Sept. 29-Oct. 1, 2004. - 2004. - С. 303-309

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ADMIXTURES

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16.

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ADMIXTURES

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17.

Инвентарный номер: нет.

   B 16

    Baidakov, V. G.
    Metastable extension of the melting line and the critical endpoint / V. G. Baidakov, S. P. Protsenko, O. A. Tipeev // Journal of Non-Crystalline Solids : 9th International Symposium on Crystallization in Glasses and Liquids Location, Foz do Iguacu, BRAZIL, 10-13 sep. , 2009 . - 2009. - Vol.356, №52-54. - С. 2923-2927

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MOLECULAR-DYNAMICS SIMULATION -- LENNARD-JONES SYSTEM -- NEGATIVE PRESSURES
Аннотация: Molecular-dynamics methods have been employed to calculate the (p, rho, T)-properties and the internal energy of the Lennard-Jones crystal and liquid phases in both stable and metastable states to the boundaries of limiting supersaturations. Thermal and caloric equations of state have been formulated for determining the parameters of phase equilibrium and approximating the boundaries of essential instability (the spinodal curves). The results of calculations of phase equilibrium parameters from the condition of chemical potentials equality show that the melting line in the region of its metastable extension approaches the spinodal of a stretched liquid. The point of contact (the critical endpoint) is characterized by the following parameter values: T*(m)= 0.5286, p*(m) = -1.7128, rho*(m,l) = 0.7374, rho*(m,c) = 0.9423. The melting line and its metastable extension were also calculated by simulations of two-phase liquid-crystal systems. A comparison of these two approaches has been performed. (C) 2010 Elsevier B.V. All rights reserved

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18.

19.

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   M 73


    Miniature loop heat pipes for electronics cooling / V. G. Pastukhov, Yu. F. Maydanik, S. V. Vershinin, M. A. Korukov // Applied Thermal Engineering : 12th International Heat Pipe Conference Location, Russia, 19-24 may 2002 . - 2003. - Vol.23, № 9. - С. 1125-1135

ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MINIATURE LOOP HEAT PIPE -- CPU -- THERMAL RESISTANCE
Аннотация: The paper is devoted to the development of miniature loop heat pipes (mLHPs) with a nominal capacity of 25-30 W and a heat-transfer distance up to 250 mm intended for cooling electronics components and CPU of mobile PC. It gives the results of investigating several prototypes of mLHPs incorporated into remote heat exchanger (RHE) systems in different conditions. It has been established that in the nominal range of heat loads orientation does not practically affect the mLHPs operating characteristics. Under air cooling the total thermal resistance of such a system is 1.7-4.0degreesC/W and depends strongly on the cooling conditions and the radiator efficiency. In this case the mLHP's own thermal resistance is in the limits from 0.3 to 1.2degreesC/W, and the maximum capacity reaches 80-120 BT. The obtained results make it possible to regard mLHPs as quite promising devices for RHE systems providing thermal regimes for electronics components and personal computers. (C) 2003 Elsevier Science Ltd. All rights reserved

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