Spray cooling of high power diode laser

Bo, 杨波 Yang; Songxin, 高松信 Gao; Jun, 刘军 Liu; Hong, 王宏 Wang

doi:10.3788/hplpb20142607.71001

Cited by 3 publications

(4 citation statements)

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“…Under the same conditions, the unit mass flow rate and liquid temperature of spray cooling in the pipe were higher than that of spray cooling outside the pipe. The liquid temperature during spray cooling inside the pipe was higher than that during spray cooling outside the pipe [20] .…”

Section: Discussionmentioning

confidence: 78%

Designing an Experimental Device for Swinging Excitation Spray Cooling

Huang,

Wang

2024

JERA

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In this paper, we introduce the design principle of the oscillating excited spray cooling experimental device. We then designed an oscillating excited spray cooling experimental device. By using the device, the swaying motion can be realized through the control system, and the motion of the droplet under different vibration frequencies can be observed. By measuring the liquid flow rate and pressure, the changes in liquid flow rate, pressure, and temperature with time under different vibration frequencies were studied. The trajectory of the droplet and the temperature distribution of the droplet under different vibration frequencies could be observed. The device has a simple structure, is easy to control, and can achieve continuous observation of the spray cooling process.

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Section: Discussionmentioning

confidence: 78%

Designing an Experimental Device for Swinging Excitation Spray Cooling

Huang,

Wang

2024

JERA

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“…Especially on Surface 3, the degree of heat transfer enhancement is substantially less than area enhancement. The results of [3,4] indicate all surfaces tested improved heat transfer performance compared to a flat surface, but the increase in heat flux is out of proportion to area enhancement. In the study of Bostanci et al [5], the enhancement of heat transfer was attributed to a stronger contribution of phase change mechanisms besides the increase in surface area.…”

Section: Spray Cooling On Enhanced Surfacementioning

confidence: 96%

“…2, and found the straight fins performed best, whose heat transfer area was smallest in all three surfaces, followed by cubic fins and pyramids. In a similar research, Wang et al [4] investigated the heat transfer enhancement on straight fins surfaces with different fin heights. Relevant data shown in Tab.…”

Section: Spray Cooling On Enhanced Surfacementioning

confidence: 99%

Research Developments on Improvement of Spray Cooling Performance

Wang

2012

AMR

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Spray cooling is considered to be one of the most promising electronic cooling methods, since it has several unique advantages such as high heat dissipation, small ﬂuid inventory, and uniformity of heat removal. However the spray cooling performance could be further improved, which can be expressed by the combination of a better heat removal capability, a higher cooling efficiency, and the more uniform surface temperature distribution. In this paper, recent research developments on spray cooling characteristics under different working conditions are reviewed, possible approaches to improve the spray cooing performance are also proposed. Especially spray cooling systems with both enhanced surface and lower system pressure would be be full of attraction.

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“…We will review the basic physics for OTR from a single foil. When an electron incidence onto the surface of metal at 45 • from a vacuum, the backwards OTR distribution can be expressed as the following formula when the parallel case is discussed [3]…”

Section: The Otr Principle and The Instantaneous Emittance Measuremen...mentioning

confidence: 99%

Instantaneous electron beam emittance measurement system based on the optical transition radiation principle

Jiang¹,

Wang²,

Zhang³

et al. 2014

Chinese Phys. C

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One kind of instantaneous electron beam emittance measurement system based on the optical transition radiation principle and double imaging optical method has been set up. It is mainly adopted in the test for the intense electron-beam produced by a linear induction accelerator. The system features two characteristics. The first one concerns the system synchronization signal triggered by the following edge of the main output waveform from a Blumlein switch. The synchronous precision of about 1 ns between the electron beam and the image capture time can be reached in this way so that the electron beam emittance at the desired time point can be obtained. The other advantage of the system is the ability to obtain the beam spot and beam divergence in one measurement so that the calculated result is the true beam emittance at that time, which can explain the electron beam condition. It provides to be a powerful beam diagnostic method for a 2.5 kA, 18.5 MeV, 90 ns (FWHM) electron beam pulse produced by Dragon I. The ability of the instantaneous measurement is about 3 ns and it can measure the beam emittance at any time point during one beam pulse. A series of beam emittances have been obtained for Dragon I. The typical beam spot is 9.0 mm (FWHM) in diameter and the corresponding beam divergence is about 10.5 mrad.

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Spray cooling of high power diode laser

Cited by 3 publications

References 0 publications

Designing an Experimental Device for Swinging Excitation Spray Cooling

Designing an Experimental Device for Swinging Excitation Spray Cooling

Research Developments on Improvement of Spray Cooling Performance

Instantaneous electron beam emittance measurement system based on the optical transition radiation principle

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