Helium turbomachinery operating experience from gas turbine power plants and test facilities

McDonald, Colin F.

doi:10.1016/j.applthermaleng.2012.02.041

Cited by 82 publications

(34 citation statements)

References 15 publications

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“…The starting point for the closed cycle EFGT was in the late 1930s with the 2.3 MW e Escher Wyss plant facility in Zurich [10,11]. The turbine operated with air as the working fluid and TIT was below 700°C.…”

Section: Fossil Fuels With Efgtmentioning

confidence: 99%

“…Using pulverized coal and also oil, the plant delivered electrical and thermal power for small industries and buildings in Ravensburg with high reliability exceeding 110,000 h of operation [12]. In 1960, a helium closed cycle EFGT was developed to drive a cryogenic facility for gas liquefaction without any output power generation [10]. Also, in the early 1960s, three other CHP-EFGT air closed cycle power plant running mainly on pulverized coal were developed.…”

Section: Fossil Fuels With Efgtmentioning

confidence: 99%

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Externally fired gas turbine technology: A review

2015

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Section: Fossil Fuels With Efgtmentioning

confidence: 99%

Section: Fossil Fuels With Efgtmentioning

confidence: 99%

Externally fired gas turbine technology: A review

2015

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“…From then on, helium has been the preferred working fluid, mainly for the devised nuclear closed gas cycles at high temperatures [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…The last closed cycle with air as the working fluid was the engine built in 1985 by Garret Corporation [3] and was a 5 MW plant burning a low-grade fuel in an atmospheric fluidized bed combustor.…”

Section: Introductionmentioning

confidence: 99%

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Prospects of Mixtures as Working Fluids in Real-Gas Brayton Cycles

Invernizzi

2017

Energies

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This paper discusses the thermodynamic characteristics of the closed Brayton cycles in which the compression is placed near the critical point of the working fluid. Under these conditions, the specific volumes of the fluid during the compression are a fraction of the corresponding values under ideal gas conditions, and the cycle performances improve significantly, mainly at moderate top temperatures. As the heat is discharged at about the critical temperature, the choice of the correct working fluid is strictly correlated with the environmental temperature or with the temperature of potential heat users. To resort to mixtures greatly extend the choice of the right working fluid, allowing a continuous variation of the critical temperature. These cycles have a high power density, and the use of ordinary turbomachinery is accompanied by high capacities (tens of megawatts). In the low power range, microturbines or reciprocating engines are required. One important constraint on the choice of the right working fluid is its thermochemical stability that restricts the operative temperatures. Among the organic compounds, the maximum safe temperatures are limited to about 400 • C and, forecasting high temperature applications, it could be interesting to explore the potentiality of the inorganic compounds as secondary fluids in binary mixtures.

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Cascade experiment and analysis on blade profile of modular high temperature gas‐cooler reactor compressor

et al. 2020

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Summary Modular high‐temperature gas‐cooled reactor power station (MHTGR) is the most promising configurations for fourth‐generation nuclear technology. Aiming at the low accuracy of the performance prediction of MHTGR compressor, the paper intends to provide an experimental basis to have deep comprehension about the nexus of loss, passage structure and working conditions, including surface flow visualization, five‐hole probe measurement at the outlet section and surface pressure measurements under different conditions (blade camber angle, incidence angle). The experimentally measured data and images give a deep insight into the influence of blade camber and incidence on the flow structure, loss and blade loading. The vortex system is mainly shaped by the action of the pressure field. When the flow turning angle is large, the effect of the working fluid properties may be inconspicuous on the overall loss of the flow, rather than the tremendous impact on the boundary layer friction loss of attached flow as in the small blade chamber angle passage. For different vortices, the effect of each factor, which may cause losses, is also wax and wane.

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Helium turbomachinery operating experience from gas turbine power plants and test facilities

Cited by 82 publications

References 15 publications

Externally fired gas turbine technology: A review

Externally fired gas turbine technology: A review

Prospects of Mixtures as Working Fluids in Real-Gas Brayton Cycles

Cascade experiment and analysis on blade profile of modular high temperature gas‐cooler reactor compressor

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