New prospects in the creation of gas-cooled fast reactors with a short doubling time, using dissociating N2O4

Krasin, A.K.; Nesterenko, V.B.

doi:10.1007/bf01254503

Cited by 4 publications

(2 citation statements)

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“…Equations (7) and (11) show that improvement in cycle efficiency would be possible if higher values of H10, the final enthalpy of regeneration, can be obtained without undue increases in compressor work. Higher values of H10 can be generated by increasing the temperature at split, T7, and also be reducing the pinch point temperature differential, AT p 2, of the high temperature regenerator.…”

Section: Resultsmentioning

confidence: 99%

Split-Flow Nuclear Gas Turbine Cycle Using Dissociating N2O4

Kesavan

Osterle

1982

Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations

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An investigation of condensation cycles using dissociating nitrogen tetroxide (N2O4) is presented. Simple cycle arrangement with a gas turbine, a liquid pump and a gas-to-liquid regenerator, and an advanced form known as the “split-flow” cycle are explored over a wide range of turbine inlet temperatures, and subcritical as well as supercritical pressures. The split-flow scheme, using a gas compressor and a gas-to-gas regenerator in addition, shows substantial efficiency gains over the simple cycle through reduced loss of thermodynamic availability in regeneration. Subcritical pressure cycles experience the largest gains, with cycle efficiency improvement of as much as 9 percentage points over the simple cycle.

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Section: Resultsmentioning

confidence: 99%

Split-Flow Nuclear Gas Turbine Cycle Using Dissociating N2O4

Kesavan

Osterle

1982

Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations

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“…A significant example is the suggestion to recourse to nitrogen tetroxide (N 2 O 4 ) as a working fluid [17][18][19].…”

Section: Fluidmentioning

confidence: 99%

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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