Assessment of Stirling engine potential in total and integrated energy systems

Marciniak, T.J.; Bratis, J.C.; Davis, A.; Lee, C.

doi:10.2172/6162161

Cited by 4 publications

(4 citation statements)

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“…In tliis vein a theoretic analysis of "plasma resistance effects in thermionic converters" (ref, 31), commenting on and departing from another such study (ref, 32), offers one solution: "Reduction of arc drops to tolerable values may require minimum spacings between emitter and collector, i. e,, less than 0. 05 cm, which would limit practical thermionic devices to diode configurations."…”

Section: Optimal Tec: Converter Artmentioning

confidence: 99%

Optimal thermionic energy conversion with established electrodes for high-temperature topping and process heating

Morris¹

1980

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Advantages of thermionic energy conversion (TEC) have been counted and are recounted with emphasis on high-temperature service in coal-combustion products. Efficient, economical, nonpolluting utilization of coal here and now is a critically important national goal. And TEC can augment this capability not only by the oftenproposed topping of steam power plants but also by higher-temperature topping and process heating. For these applications, applied-research-and-technology (ART) work reveals that optimal TEC with ~1000-to ~1100 K collectors is possible using wellestablished tungsten electrodes. Such TEC with 1800 K emitters could approach 26, Q^c efficiency at 27,4 W/cm^ with ~1000 K collectors and 21. 7% at 22. 6 W/cm^ with ~1100 K collectors. These performances require 1. 5-and 1. 7-eV collector work functions (not the 1-eV ultimate) with nearly negligible interelectrode losses. Such collectors correspond to tungsten electrode systems in ~0. 9-to-6-torr cesium pressures with 1600-to-l900 K emitters. Because higher heat-rejection temperatures for TEC allow greater collector woiic functions, interelectrode-loss reduction becomes an increasingly important target for applications aimed at elevated temperatures. Studies of intragap modifications and new electrodes that will allow better electron emission and collection with lower cesium pressures are among the TEC-ART approaches to reduced interelectrode losses. These solutions will provide very effective TEC to serve directly in coal-combustion products for high-temperature topping and process heating. In turn this will help to use coal-and to use it well.

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Section: Optimal Tec: Converter Artmentioning

confidence: 99%

Optimal thermionic energy conversion with established electrodes for high-temperature topping and process heating

Morris¹

1980

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“…A'market assessment of a Stirling engine for total and integrated energy systems was performed by Argonne National Laboratory (ANL) (1). The market assessment revealed that there was a need for a stationary power engine in total energy and cogeneration systems.…”

Section: Market Assessmentmentioning

confidence: 99%

Design and development of Stirling engines for stationary-power-generation applications in the 500- to 3000-hp range. Phase I final report

1980

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DISCLAIMER 'This b w k was prepared w m m u n t of work rpotuored by an weney of the United Stem Gwcrnmsnt Neither the Udilmd 8 t. h Oonmnmmt not my a p t c y thezwf, nor any of thuh mplnyar, rmkw any 'RUMW, a p r m or implied, or auumor w rolul liability or rapansibility for the aua~mcy, rnmpbtenw* or mofulnar of m y Inpormetion, a p p n o l t~ product, or procor ll&cbal, or mpmcntl that its uu would not blf* privrrtew o w e d a h t r R&emna hsnin to l a y rpdfk mmmerd.l pmduct, p m e g~ a rarvia by trvde nrmt, t r a d e d , md.o(lllsr, or othcrwiro. do-not newwuily conditute or imply its endonemuit, ~comnnndatloll, or tsvoriq by the United Stat-Cowmmmt or any agency thmaf. ' I l~e A v n and opinbna of ruthon oxp& haah, do not nemrndly state or rtfloa thoa of the Unite4 Stat-Gavunmnt or my m c y thenof." This report h a been rspmduad directly from the best available copy. &&bk from the National Tcchm'cal Inlomution %I &, U:S. ~~t of Commnce. SpringRsld, V i 22161. Foster-Miller Associates., 1nc. William ~oscdno-Program Manager Ram Chandrasekhar Roger ~ernler. .

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“… Due to the absence of mechanical connections between the displacer piston and the power piston, the phase shift of these pistons is difficult to keep at the designed phase shift. Disadvantage [25]  Cost: It is expected that the cost of a high efficiency Stirling engine could be significantly high.…”

Section: Disadvantagementioning

confidence: 99%

“…The simulation was conducted by the ANSYS FLUENT 19.1. Mass conservation equation and momentum equation are expressed by equation(24) and(25). Additionally, the energy equation is expressed by equation(46) [139].…”

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confidence: 99%

Experimental and Numerical Study of the Stirling Engine Robust Foil Regenerator

Yanaga¹

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Experimental and Numerical Study of the Stirling Engine Robust Foil Regenerator Koji Yanaga Conventional electricity generation wastes more than two thirds of its thermal energy while generating electricity. Combined Heat and Power (CHP) systems are an efficient energy conversion technology, which generate electricity and useful thermal energy simultaneously by utilizing waste energy for space heating and sanitation. One system that is suitable for CHP is the Stirling engine. Because of the simple design, flexible heat source (solar, biomass, waste heat), high thermal to electricity conversion efficiency, and high reliability, the Stirling engine is expected to be one of the best candidates for the applications in the future. It was the biggest challenge in my life to come to the US and earn a Ph.D. degree at West Virginia University. The challenge would not have been overcome without all the support I received from my adviser, thesis committee members, friends, girlfriend, and my family. In the following paragraphs, I would like to show my appreciation to all the people who supported me. Firstly, I would like to give my utmost appreciation, and thanks to my academic advisor Dr. Songgang Qiu for all the support he gave me throughout my time at WVU. Without his advice and financial supports through my Ph.D. process, I would definitely not have earned my Ph.D. degree.

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Assessment of Stirling engine potential in total and integrated energy systems

Cited by 4 publications

References 0 publications

Optimal thermionic energy conversion with established electrodes for high-temperature topping and process heating

Optimal thermionic energy conversion with established electrodes for high-temperature topping and process heating

Design and development of Stirling engines for stationary-power-generation applications in the 500- to 3000-hp range. Phase I final report

Experimental and Numerical Study of the Stirling Engine Robust Foil Regenerator

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