scholarly journals Experimental results with cryogenically cooled thin silicon crystal x-ray monochromators on high heat flux beamlines

Author(s):  
Carey S. Rogers ◽  
Dennis M. Mills ◽  
Wah Keat Lee ◽  
Patricia B. Fernandez ◽  
Timothy Graber
Solar Energy ◽  
2021 ◽  
Vol 221 ◽  
pp. 176-184
Author(s):  
F. Müller-Trefzer ◽  
K. Niedermeier ◽  
F. Fellmoser ◽  
J. Flesch ◽  
J. Pacio ◽  
...  

Author(s):  
Takahiro Katoh ◽  
Marlin Vogel ◽  
Guoping Xu ◽  
Shlomo Novotny

This paper proposes a new solution for high heat flux chip cooling. The authors attempted to apply Heatlane technology for a heat sink of high-end server chip cooling. This unique technology, which is also called oscillating or pulsating heat pipe, showed very high thermal performance, and the experimental results were compared with conventional copper base heat sink in this paper. The experimental and analysis results showed that the Heatlane technology transferred heat very effectively and highly improved the fin efficiency. And the Heatlane heat sink also showed very small gravity effect and high reliability under vibrating conditions. Those experimental results were also shown in this paper. From this study, the authors has convinced that the Heatlane technology for a heat sink can be a strong candidate to solve a thermal issue of high heat flux chip cooling, especially for high-end server applications.


10.2172/87836 ◽  
1993 ◽  
Author(s):  
A.M. Khounsary ◽  
R.K. Smither ◽  
S. Davey ◽  
A. Purohit
Keyword(s):  

2019 ◽  
Vol 148 ◽  
pp. 111296
Author(s):  
V. Kuznetсov ◽  
A. Kokoulin ◽  
A. Komarov ◽  
A. Malyshev ◽  
I. Ovchinnikov ◽  
...  

1993 ◽  
Author(s):  
Ali M. Khounsary ◽  
Robert K. Smither ◽  
Steve Davey ◽  
Ankor Purohit
Keyword(s):  

Author(s):  
Sergio Escobar-Vargas ◽  
Jorge E. Gonzalez ◽  
Orlando Ruiz ◽  
Cullen Bash ◽  
Ratnesh Sharma ◽  
...  

The increasing power density on electronic components has resulted in temperature problems related to the generation of hot spots and the need to remove high heat flux in small areas. This work is aimed at the cooling of small surfaces (1 mm × 1.2 mm) by using a monodisperse spray from thermal ink jet (TIJ) atomizers. Heat fluxes near the critical heat flux (CHF) are obtained for different conditions of cooling mass flow rate, droplet deposition, and number of active droplet jets. Experimental results at quasiequilibrium show the heat flux scales to the cooling mass flow rate. It is observed that two simultaneously activated jets result in slightly smaller heat flux compared to a single jet of droplets for the same mass flow rate. Droplet momentum and spreading or splashing, as determined by a combination of Weber number and Reynolds number effect via K = We1/2Re1/4, may impact the efficiency of the delivery of the cooling mass flow. Current experimental results at K = 24.5 and K = 52.2 for the copper surface temperatures ranging 110 – 120 °C indicate there is little influence of the splashing on the heat dissipation. System heat losses are measured experimentally and compared to a numerical and analytical solution to estimate the actual heat dissipated by the droplet change of phase.


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