Results 151 to 160 of about 1,736 (199)
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Multiple jet impingement cooling
Journal of Thermophysics and Heat Transfer, 1993Experiments were performed to study the effect of nozzle rotation, flow rate, degrees of subcooling, number of jets, and velocity on the heat flux in jet impingement cooling using deionized distilled water. The heat flux is a strong function of the flow rate and degree of subcooling, attaining a maximum value of the order of 600 W/cm at the highest ...
M. R. Pais, L. C. Chow, E. T. Mahefkey
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Micro-Electro-Mechanical Systems (MEMS), 2000
Abstract This paper presents an experimental investigation on MEMS impinging jets as applied to micro heat exchangers. We have fabricated MEMS single and array jet nozzles using DRIE technology, as well as a MEMS quartz chip providing a simulated hot surface for jet impingement.
Qiao Lin +4 more
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Abstract This paper presents an experimental investigation on MEMS impinging jets as applied to micro heat exchangers. We have fabricated MEMS single and array jet nozzles using DRIE technology, as well as a MEMS quartz chip providing a simulated hot surface for jet impingement.
Qiao Lin +4 more
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Mist/Steam Cooling by a Row of Impinging Jets
Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, 2001Closed loop steam has been chosen for cooling airfoils in heavy frame Advanced Turbine Systems (ATS) to improve efficiency. Enhanced cooling by the use of mist is considered to have potential to augment cooling by internal steam alone. Water droplets generally less than 10μm are added to 1.3 bar steam and injected through a row of four discrete round ...
X Li, J.L Gaddis, T Wang
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Cooling performance of an impingement cooling device combined with pins
Journal of Thermal Science, 2005Experimental study and one dimensional model analysis were conducted to investigate cooling performance of an integrated impingement and pin fin cooling device. A typical configuration specimen was made and tested in a large scale low speed closed-looped wind tunnel.
Dongliang Quan +3 more
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Impinging jet cooling on concave surfaces
AIChE Journal, 2004AbstractThe numerical modeling of jet impingement cooling onto a semicircular concave surface is reported. The performance of two‐equation turbulence models (such as the k–ε model) is evaluated vs. the Reynolds stress model proposed. The Reynolds‐averaged momentum and energy equations are solved together with equations for the turbulence models, using ...
N. Souris, H. Liakos, M. Founti
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Submerged liquid jet impingement cooling
2011 IEEE 13th Electronics Packaging Technology Conference, 2011In this paper, submerged liquid jet array impingement is proposed as a solution for the thermal management of the high performance electronics. Experiments were done using a submerged jet array of 285 nozzles of 0.5 mm diameter spaced 5.5 mm apart, machined on a 5 mm thick nozzle plate, with an impingement height of 3 mm.
Z. Y. Wang +7 more
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Spray Cooling Droplet Impingement Model
10th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, 2010Spray Cooling is one of the leading techniques proposed for rejection of high heat flux levels necessary in future aircraft and spacecraft electronics and weapons packages. Experimental research and computational CFD require significant amounts of time to setup and execute to completion.
Paul Kreitzer, John Kuhlman
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Jet Impingement Cooling in VSCF Generators
SAE Technical Paper Series, 1995<div class="htmlview paragraph">A cooling technique is devised which will maintain the electronics within their thermal operating limits when the power output of currently used VSCFs is augmented to 65 kVA from 40 kVA. This study suggests that the use of jet impingement cooling selectively applied in regions of high heat flux will support the ...
Martin Pais +5 more
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Cooling of Electronic Systems by Impinging Air Jets
1994Thermal performance is one of the most important criterion in the material and process selection for microelectronic packages. Thermal management is driven by integrated circuit scaling. So, forced-air cooling is not only way to get the heat out of electronics. In this paper, cooling of electronic components by impinging air jets is introduced.
PULAT, ERHAN, CAN, M
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Evaporative cooling of air in impinging streams
AIChE Journal, 1995AbstractAn experience study was conducted on evaporative cooling of air in an impinging‐stream reactor, in which two droplets gas streams flow in opposite directions and meet in the impingement zone. The air was cooler by evaporation of water droplets.
B. Yao, Y. Berman, A. Tamir
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