The microminiature thermionic converter

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August undefined, 2024

WebMicrominiature thermionic converters (MTCs) manufactured using MEMS manufacturing techniques including chemical vapor deposition, and having high energy-conversion efficiencies and variable operating temperatures. The MTCs of the invention incorporate cathode to anode spacing of about 1 micron or less and use cathode and anode materials … WebOct 1, 2002 · Thermally induced electron emission, known as thermionic emission, is described by the Richardson–Dushman equation (1) J S = D AT 2 exp −φ (T) kT, where JS is the saturation current density, A is the Richardson constant, T is the temperature of the surface, φ ( T) is the temperature-dependent work function, and k is Boltzmann’s constant.

Thermionic Converter Market By Segmentation Includes Type, A...

WebNote: Fractional results are rounded to the nearest 1/64. For a more accurate answer please select 'decimal' from the options above the result. WebSingle-crystal materials can improve thermionic converter performance. As Figure 7.1 shows, increased bare work function results in higher efficiency and higher optimum power density. A work function of 5.6 corresponds to single-crystal rhenium, and one of about 5.0, to poly crystalline tungsten. hawaii festivals 2023

The microminiature thermionic converter - NASA/ADS

WebJul 1, 2024 · Microminiature thermionic converters. DOEpatents. King, Donald B.; Sadwick, Laurence P.; Wernsman, Bernard R. 2001-09-25. Microminiature thermionic converts (MTCs ... WebOct 11, 2024 · The thermionic emission used in space applications has operating temperatures >2000 0 C which is much higher than available temperature at terrestrial automotive applications. Hence the key research interests are focused towards effective utilization of thermionic energy conversion for automotive waste heat recovery at … WebMicrominiature thermionic converters (MTCs) manufactured using MEMS manufacturing techniques including chemical vapor deposition, and having high energy-conversion efficiencies and variable operating temperatures. The MTCs of the invention incorporate cathode to anode spacing of about 1 micron or less and use cathode and anode materials … boscov\u0027s dining chairs

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Hybrid thermionic-photovoltaic converter with graphene-on …

Web1 day ago · Thermionic Converter Market By Segmentation Includes Type, Applications, Channel, And Forecast To [2024-2033] Date. 4/14/2024 3:00:42 AM. ( MENAFN - America News Hour) Key Companies Covered in the ... WebWhat does microminiature mean? Information and translations of microminiature in the most comprehensive dictionary definitions resource on the web. Login . boscov\\u0027s dining chairsWebThermionic energy conversion is the direct conversion of heat into electricity by the mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface. Although the physical… Expand 31 PDF Photon-enhanced thermionic emission for solar concentrator systems. J. Schwede, I. Bargatin, +8 authors N. Melosh Physics, … hawaii fieldprint

"WebNote: Fractional results are rounded to the nearest 1/64. For a more accurate answer please select 'decimal' from the options above the result. " - The microminiature thermionic converter

The microminiature thermionic converter

WebApr 4, 2001 · A new generation of thermionic converter, the microminiature thermionic converter (MTC) has been fabrication using semiconductor integrated circuit (IC) fabrication methods and micromachining manufacturing (MM) techniques. WebAug 1, 2011 · Thermionic electron emitters are a crucial component in applications ranging from high power telecommunication, electron guns, space thrusters and direct thermal to electrical energy converters.

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Web8 (a)-8 (d) schematically illustrate an example of steps for assembling the self-powered microminiature thermionic converter by combining the upper and lower assemblies, according to the present invention; FIG. 9 schematically illustrates a completely assembled self-powered microthermionic convertor, according to the present invention; WebMTCs are two electrode devices that convert heat energy into electrical energy. The electrodes are spaced opposite each other in a vacuum environment with one electrode heated and the second cooled. Electrons are emitted from the hot electrode to the cool electrode creating electrical power.

Web—magnetoplasmadynamic MTC —microminiature thermionic converter NASA —National Aeronautics and Space Administration NMERI —New Mexico Engineering Research Institute NRC —National Research Council RTG —radioisotope thermoelectric generator SRA —Scientific Research Association SDIO —Strategic Defense Initiative Office SET WebResearch is in progress to develop microminiature thermionic converters (MTCs) using semiconductor integrated circuit (IC) fabrication methods. The use of IC te Results from the microminiature thermionic converter demonstration testing program IEEE Conference Publication IEEE Xplore

WebSep 3, 2024 · The methods for optimization of Thermionic energy converter are focusing towards space charge limitation and electron acceleration. Magnetic/electric field, electron beaming shows best results in improvement of conversion efficiency. Nanostructure materials can exhibit lower work function for better performance. WebA new generation of thermionic converter, the microminiature thermionic converter (MTC) has been fabrication using semiconductor integrated circuit (IC) fabrication methods and micromachining manufacturing (MM) techniques.

WebOct 21, 2024 · Thermionic energy converters are solid-state heat engines to produce electricity with significant potential, whereas the output voltage is constrained by the difference between cathode and anode. In this work, we originally apply a graphene-on-semiconductor anode to a thermionic-photovoltaic (TIPV) converter to output additional …

WebJan 1, 2000 · Request PDF The microminiature thermionic converter The design, fabrication, testing, and analysis of the microminiature thermionic converter (MTC) is discussed. hawaii field print codeWebSep 1, 2024 · Thermionic (TI) energy converters can directly convert thermal energy to electrical power, with a prospect of power density of 1 MW/m 2 and efficiency of >30% ( Campbell et al., 2024 ). TI converter can be applied to concentrated solar power ( Schwede et al., 2013 ; Trucchi et al., 2024 ; Xiao et al., 2024 ), space nuclear power ( hawaii.fieldprint.comWebJan 1, 2024 · Microminiature thermionic converts (MTCs) having high energy-conversion efficiencies and variable operating temperatures. Methods of manufacturing those converters using semiconductor integrated circuit fabrication and micromachine manufacturing techniques are also disclosed. boscov\\u0027s dining room table