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1.
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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2.
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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3.
Инвентарный номер: нет.
   
   T 44

   
    The proof-of-feasibility of multiple evaporator loop heat pipes / W. B. Bienert, D. A. Wolf, M. N. Nikitkin, Yu. F. Maydanik, Y. G. Fershtater, S. V. Vershinin, J. M. Gottschlich // 6th European Symposium on Space Environmental Control Systems: Noordwijk, Netherlands, 20-22 may 1997 . - 1997. - Vol.400. - С. 393-398
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- THERMAL CONTROL -- MULTIPLE THERMAL INTERFACE
Аннотация: This paper presents results that demonstrate the proof-of-feasibility of multiple evaporator Loop Heat Pipes (LHP). It was demonstrated that a multiple evaporator LHP can successfully operate as a thermal control system component. A breadboard LHP with multiple evaporators (two) that retained the reliable self starting behavior of the single thermal interface LHP was developed. Program efforts were concentrated on a two pump system and investigated the performance of the dual evaporator LHP. Analytical predictons and experimental test data are compared, and important issues are discussed that will be a baseline for continued development of multiple thermal interface LHPs. All of the conclusions are based on test results, analytic modeling and the correlation of the two. Although a mathematical model that predicts the multiple evaporator LHP behavior was developed, the primary focus of the program was the development, fabrication, and test of a breadboard multi-evaporator LHP. The program clearly demonstrated that multi-evaporator LHPs are feasible and merit further development as a viable thermal control components

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4.
Инвентарный номер: нет.
   
   T 44

   
    The proof-of-feasibility of multiple evaporator loop heat pipes / W. B. Bienert, D. A. Wolf, M. N. Nikitkin, Yu. F. Maydanik, Y. G. Fershtater, S. V. Vershinin, J. M. Gottschlich // 6th European Symposium on Space Environmental Control Systems: Noordwijk, Netherlands, 20-22 may 1997 . - 1997. - Vol.400. - С. 393-398
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- THERMAL CONTROL -- MULTIPLE THERMAL INTERFACE
Аннотация: This paper presents results that demonstrate the proof-of-feasibility of multiple evaporator Loop Heat Pipes (LHP). It was demonstrated that a multiple evaporator LHP can successfully operate as a thermal control system component. A breadboard LHP with multiple evaporators (two) that retained the reliable self starting behavior of the single thermal interface LHP was developed. Program efforts were concentrated on a two pump system and investigated the performance of the dual evaporator LHP. Analytical predictons and experimental test data are compared, and important issues are discussed that will be a baseline for continued development of multiple thermal interface LHPs. All of the conclusions are based on test results, analytic modeling and the correlation of the two. Although a mathematical model that predicts the multiple evaporator LHP behavior was developed, the primary focus of the program was the development, fabrication, and test of a breadboard multi-evaporator LHP. The program clearly demonstrated that multi-evaporator LHPs are feasible and merit further development as a viable thermal control components

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5.
Инвентарный номер: нет.
   
   T 44

   
    The loop heat pipe experiment on board the GRANAT spacecraft / A. A. Orlov, K. Goncharov, E. Y. Kotiarov, T. A. Tyklina, S. N. Ustinov, Yu. F. Maydanik // 6th European Symposium on Space Environmental Control Systems: Noordwijk, Netherlands, 20-22 may 1997 . - 1997. - Vol. 400. - С. 341-353
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- ALYONA -- EXPERIMENTAL SYSTEM
Аннотация: Results of the most durable Russian on-orbit experiment with the Loop Heat Pipe are analyzed in present paper. All telemetry data on temperature measurements obtained from the experimental system ALYONA during its performance period from 1989 till 1996 are compared. Estimation of the LHP operation ability during the whole period mentioned above and determination of the calculated value of transferred heat power were executed with taking into account the boundary conditions characterizing the operation mode of the experimental system ALYONA. Some results of on-ground testing, real characteristics of radiating surfaces coating and, also, the scientific spacecraft GRANAT orientation data were taken into account for analyzing. Necessary information on the Loop Heat Pipe design, used materials, preliminary on-ground testing is presented. Besides this, the information that allows to make a conclusion on the successful Loop Heat Pipe re-starting modes occurring when the spacecraft comes into the shade zone and to judge on the LHP life time is also presented. Documents provided by different LAVOCHKIN ASSOCIATION sen ices and divisions controlling the communication data obtained from the spacecraft were used for this paper preparation

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6.
Инвентарный номер: нет.
   
   T 44

   
    The loop heat pipe experiment on board the GRANAT spacecraft / A. A. Orlov, K. Goncharov, E. Y. Kotiarov, T. A. Tyklina, S. N. Ustinov, Yu. F. Maydanik // 6th European Symposium on Space Environmental Control Systems: Noordwijk, Netherlands, 20-22 may 1997 . - 1997. - Vol. 400. - С. 341-353
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- ALYONA -- EXPERIMENTAL SYSTEM
Аннотация: Results of the most durable Russian on-orbit experiment with the Loop Heat Pipe are analyzed in present paper. All telemetry data on temperature measurements obtained from the experimental system ALYONA during its performance period from 1989 till 1996 are compared. Estimation of the LHP operation ability during the whole period mentioned above and determination of the calculated value of transferred heat power were executed with taking into account the boundary conditions characterizing the operation mode of the experimental system ALYONA. Some results of on-ground testing, real characteristics of radiating surfaces coating and, also, the scientific spacecraft GRANAT orientation data were taken into account for analyzing. Necessary information on the Loop Heat Pipe design, used materials, preliminary on-ground testing is presented. Besides this, the information that allows to make a conclusion on the successful Loop Heat Pipe re-starting modes occurring when the spacecraft comes into the shade zone and to judge on the LHP life time is also presented. Documents provided by different LAVOCHKIN ASSOCIATION sen ices and divisions controlling the communication data obtained from the spacecraft were used for this paper preparation

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7.
Инвентарный номер: нет.
   
   S 82

   
    Steady-state and transient performance of a miniature loop heat pipe / Chen. Yuming, M. Groll, R. Mertz, Yu. F. Maydanik // International Journal of Thermal Science. - 2006. - Vol.45. - С. 1084-1090
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- HEAT TRAHSFER -- ELECTRONICS COOLING
Аннотация: A series of tests have been carried out with a miniature loop heat pipe (mLHP), which has been developed for consumer electronics cooling, for horizontal and four vertical orientations under different sink temperatures. The mLHP has a cylindrical evaporator of 5 mm outer diameter and 29 mm length. The steady-state operating characteristics are similar for different orientations except for the orientation where the evaporator is above the compensation chamber. At an evaporator temperature of 75 °C, an evaporator heat load up to 70 W can be reached with thermal resistance of about 0.2 °C/W. The transient behavior of the mLHP is studied in detail. In general, the mLHP can be started up with very low power input (5 W). Big temperature oscillations in the liquid line were found in many cases, however, the temperature oscillations in the evaporator are minimum. The orientations greatly influence the operating characteristics of the mLHP. At least for the horizontal orientation, the overall performance of the tested mLHP is satisfying

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8.
Инвентарный номер: нет.
   
   S 82

   
    Steady-state and transient performance of a miniature loop heat pipe / Chen. Yuming, M. Groll, R. Mertz, Yu. F. Maydanik // International Journal of Thermal Science. - 2006. - Vol.45. - С. 1084-1090
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LOOP HEAT PIPES -- HEAT TRAHSFER -- ELECTRONICS COOLING
Аннотация: A series of tests have been carried out with a miniature loop heat pipe (mLHP), which has been developed for consumer electronics cooling, for horizontal and four vertical orientations under different sink temperatures. The mLHP has a cylindrical evaporator of 5 mm outer diameter and 29 mm length. The steady-state operating characteristics are similar for different orientations except for the orientation where the evaporator is above the compensation chamber. At an evaporator temperature of 75 °C, an evaporator heat load up to 70 W can be reached with thermal resistance of about 0.2 °C/W. The transient behavior of the mLHP is studied in detail. In general, the mLHP can be started up with very low power input (5 W). Big temperature oscillations in the liquid line were found in many cases, however, the temperature oscillations in the evaporator are minimum. The orientations greatly influence the operating characteristics of the mLHP. At least for the horizontal orientation, the overall performance of the tested mLHP is satisfying

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9.
Инвентарный номер: нет.
   
   S 82

   
    Steady state operation of a copper–water LHP with a flat-oval evaporator / S. Becker, S. V. Vershinin, V. Sartre, E. Laurien, J. Bonjour, Yu. F. Maydanik // Applied Thermal Engineering. - 2011. - Vol.31, №5. - С. 686-695. - Библиогр.: с. 695 (24 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
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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10.
Инвентарный номер: нет.
   
   S 82

   
    Steady state operation of a copper–water LHP with a flat-oval evaporator / S. Becker, S. V. Vershinin, V. Sartre, E. Laurien, J. Bonjour, Yu. F. Maydanik // Applied Thermal Engineering. - 2011. - Vol.31, №5. - С. 686-695. - Библиогр.: с. 695 (24 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
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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