Forced convection cooling of additively manufactured single and double layer enhanced microchannels

Panse, Sanskar S.; Ekkad, Srinath V.

doi:10.1016/j.ijheatmasstransfer.2020.120881

Cited by 24 publications

(3 citation statements)

References 38 publications

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“…Additively manufacturing such micro-channels enables the generation of an angled connection between the individual channels-something, which is investigated in Ref. [224] and shown in Figure 31. The authors show that this enhances heat transfer considerably.…”

Section: Double-wall Coolingmentioning

confidence: 99%

Advanced Gas Turbine Cooling for the Carbon-Neutral Era

Takeishi

Krewinkel

2023

IJTPP

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In the coming carbon-neutral era, industrial gas turbines (GT) will continue to play an important role as energy conversion equipment with high thermal efficiency and as stabilizers of the electric power grid. Because of the transition to a clean fuel, such as hydrogen or ammonia, the main modifications will lie with the combustor. It can be expected that small and medium-sized gas turbines will burn fewer inferior fuels, and the scope of cogeneration activities they are used for will be expanded. Industrial gas turbine cycles including CCGT appropriate for the carbon-neutral era are surveyed from the viewpoint of thermodynamics. The use of clean fuels and carbon capture and storage (CCS) will inevitably increase the unit cost of power generation. Therefore, the first objective is to present thermodynamic cycles that fulfil these requirements, as well as their verification tests. One conclusion is that it is necessary to realize the oxy-fuel cycle as a method to utilize carbon-heavy fuels and biomass and not generate NOx from hydrogen combustion at high temperatures. The second objective of the authors is to show the required morphology of the cooling structures in airfoils, which enable industrial gas turbines with a higher efficiency. In order to achieve this, a survey of the historical development of the existing cooling methods is presented first. CastCool® and wafer and diffusion bonding blades are discussed as turbine cooling technologies applicable to future GTs. Based on these, new designs already under development are shown. Most of the impetus comes from the development of aviation airfoils, which can be more readily applied to industrial gas turbines because the operation will become more similar. Double-wall cooling (DWC) blades can be considered for these future industrial gas turbines. It will be possible in the near future to fabricate the DWC structures desired by turbine cooling designers using additive manufacturing (AM). Another conclusion is that additively manufactured DWC is the best cooling technique for these future gas turbines. However, at present, research in this field and the data generated are scattered, and it is not yet possible for heat transfer designers to fabricate cooling structures with the desired accuracy.

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Section: Double-wall Coolingmentioning

confidence: 99%

Advanced Gas Turbine Cooling for the Carbon-Neutral Era

Takeishi

Krewinkel

2023

IJTPP

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“…They found forced convection water cooled MCHS has a potential application for electronic cooling. Panse and Ekkad (2021) experimentally and numerically studied forced convection cooling from additive manufacturing based single and double layer microchannels (MCs) for electronic, automotive, aerospace, and medical applications. Authors found better cooling performance from enhanced double layer MCs.…”

Section: Introductionmentioning

confidence: 99%

Study of Substrate Conductance Effect on Cooling of Electronic Components

Durgam¹

2022

Front. Heat Mass Transf.

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This article explores experimentally and numerically the effect of conductance on cooling of electronic chips by forced air flow in a vertical channel for thermal control. Experiments are conducted using substrates of FR4, bakelite, copper clad board (single layer) equipped with aluminum heat sources at uniform heat fluxes of 1000, 2000, and 3000 W/m 2 at 500 ≤ Re ≤ 1500. Computer simulations are performed to validate experimental results using a finite element method based COMSOL Multiphysics 4.3b software and the results are in agreements of below 10%. The temperatures obtained showed high thermal conductance copper clad boards (CCBs) are very low compared to FR4 and bakelite substrates. Results showed that FR4 and bakelite are unsuitable for airflow velocity of 0.6 m/s and heat flux of 3000 W/m 2 . However, the temperature variation between single and multilayer CCB is 3 to 4 • C. The temperature reduction using CCB is 10 • C compared to FR4 and bakelite.

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“…The integration of additive manufacturing technology into the high-performance stainless steel submersible pump market would allow the development of impeller blade profiles with a greater hydraulic efficiency [35], thanks to a greater design freedom, with the possibility of easily creating complex shapes and using ultra-light and ultra-resistant materials, such as titanium or aluminum alloys, to reduce masses, thicknesses, and wear. Further advantages relate to the possibility of customizing the hydraulic characteristics of the pump body so as to maximize internal efficiency, for all applications, with a significant improvement in energy conversion processes [36].…”

Section: Introductionmentioning

confidence: 99%

Re-Engineering of an Impeller for Submersible Electric Pump to Be Produced by Selective Laser Melting

et al. 2021

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The subject of the present study is the reproduction of a submersible electric pump impeller through reverse engineering and additive manufacturing. All of the phases commonly envisaged in the reproduction of an existing piece were carried out. The aim of the study is to show how the chosen pump component can be effectively re-engineered and produced with the selective laser melting technique, obtaining a final product that is comparable if not even better than the starting one. To achieve this goal, the original piece was redesigned and a new model was created and analyzed. The whole process has been split into three main phases: (i) realization of the three-dimensional model from an existing piece using reverse engineering techniques; (ii) finite element analysis for the optimization of the use of the material; and (iii) 3D printing of a concept model in polyethylene terephthalate by using the fused deposition modeling technology and of the functional model in AISI 316 stainless steel with selective laser melting technology.

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Forced convection cooling of additively manufactured single and double layer enhanced microchannels

Cited by 24 publications

References 38 publications

Advanced Gas Turbine Cooling for the Carbon-Neutral Era

Advanced Gas Turbine Cooling for the Carbon-Neutral Era

Study of Substrate Conductance Effect on Cooling of Electronic Components

Re-Engineering of an Impeller for Submersible Electric Pump to Be Produced by Selective Laser Melting

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