Prospects for the use of porous structures for cooling power optics components

Аполлонов, В. В.; Bystrov, P. I.; Goncharov, V. F.; Prokhorov, A. M.; Khomich, V Yu

doi:10.1070/qe1979v009n12abeh009806

Cited by 7 publications

(5 citation statements)

References 1 publication

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“…In 1978, we were first to suggest that a further increase in the optical damage threshold of mirror surfaces of high power optics (HPO) based on porous (micro capillary) structures is possible when liquid alkali metals and their alloys are used as coolants [1,2,3,4,5]. Prospects of utilising liquid alkali metal coolants in HPO were determined by the possibility of achieving a high heat transfer coefficient in the porous structure due to a favourable combination of thermo physical properties of liquid alkali metals.…”

Section: Liquid Alkali Metal Coolants In High Power Opticsmentioning

confidence: 99%

Liquid Alkali Metal Coolants in High Power Optics

Vv¹

2017

SF J Laser Optics

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Section: Liquid Alkali Metal Coolants In High Power Opticsmentioning

confidence: 99%

Liquid Alkali Metal Coolants in High Power Optics

Vv¹

2017

SF J Laser Optics

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“…It is lower in the stagnant zones, maximum near the reattachment point, whereas far from the protrusion, where the infl uence of the vortex zone becomes weaker, it decreases again. The length of the trough corresponding to the maximum of the heat transfer rate average over the surface amounts to (10)(11)(12)k.…”

Section: Surface With a Regular Roughnessmentioning

confidence: 99%

“…The most popular methods of intensifi cation of heat and mass transfer in the presence of convection are the use of the entry section effect, artifi cial fl ow agitation in the wall layer or over the entire fl ow section by circular or spiral grooves, dimples, fi nned surfaces, twisted tapes, screws, and coiled pipes [1][2][3][4][5][6][7][8], jet impingement of a heat carrier on a surface, porous and brush inserts [9][10][11][12][13], fl ow rate fl uctuations [14], effect of ultrasonic vibrations [15] and of an electric fi eld [16]. The infl uence of wall intensifi ers of heat removal on laminar-fl ow heat transfer was investigated in [17].…”

Section: Introductionmentioning

confidence: 99%

Intensification of Heat and Mass Transfer on Macro-, Micro-, and Nanoscales

Dzyubenko,

Kuzma-Kichta,

Leontiev

et al. 2016

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The results of theoretical and experimental investigations of heat and mass transfer enhancement on macro-, micro-, and nanoscales in single-and two-phase media, of phase interface vibrations, and of the separation of heterogeneous systems are presented. The research works carried out with the aim of increasing the safety and effi ciency of power plants made it possible to develop new methods of heat and mass transfer intensifi cation, formulate new research trends, to create new apparatuses, mathematical models of processes and the engineering methods of their calculations. Propulsion systems of spacecrafts for a piloted mission to Mars and the related methods of heat transfer intensifi cation, the methods of calculation of heat and mass transfer under the conditions of scaling of twisted pipes and pipes with circular diaphragms, and the calculation of the hydrodynamics of multiphase heterogeneous media in a centrifugal fi eld are considered additionally, as well as the results of investigation into the infl uence of the roughened surface on heat transfer in boiling on a sphere and correlations of the data on the infl uence of tape twisting on the critical heat loading are presented. The results of comparing the characteristics of tubular and plate-type heat exchangers with heat transfer intensifi ers, characteristics of heat transfer apparatuses with twisted tubes, as well as investigations of heat and mass transfer in condensation of steam from escaping fl ue gases of boilers are given. The book is intended for specialists involved in the development of power plants.

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“…Currently, the variety of porous structures and the corresponding heat exchangers complies with the specific case of their use. The majority of works are intended for coolants of the "gas-gas" and "gas-water" types with a single-phase coolant, which have found their application in rocket engines, for cooling gas turbine blades, electronic components and other heat-stressed devices [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the heat exchange intensity

2018

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We study heat exchangers at the experimental setup aiming at the energy-saving. The feature of this heat exchange process is of the fact that the working medium is a porous metal. The pores are filled with freon and operation of the refrigeration unit condenser is studied. The scheme of the experimental setup and experiment methodology are given. The results of the experiment and its processing are also presented.

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Prospects for the use of porous structures for cooling power optics components

Cited by 7 publications

References 1 publication

Liquid Alkali Metal Coolants in High Power Optics

Liquid Alkali Metal Coolants in High Power Optics

Intensification of Heat and Mass Transfer on Macro-, Micro-, and Nanoscales

Experimental investigation of the heat exchange intensity

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