Modeling of a Z-IFE Hydrogen Plant Using MELCOR-H2

Rodriguez, Sal; Gauntt, Randall O.; Cole, R. K.; McFadden, Katherine; Gelbard, Fred; Malczynski, Len; Martin, Billy; Revankar, Shripad T.; Vierow, Karen; Louie, Dave; Archuleta, Louis

doi:10.13182/fst07-a1580

Cited by 2 publications

(29 citation statements)

References 2 publications

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“…Fo= αt r 2° (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) Fluid properties are calculated in the same manner as outlined in the previous section. The numerical solution procedure models and correlations have been implemented in MELCOR-H2 using control functions.…”

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

“…The first step is to calculate viscosity for each gas component in the control volume. The equation to calculate the helium viscosity as a function of temperature, Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19), can be applied to air as well. However, for air, σ, M and Ω μ will be different values than the ones used for helium.…”

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

“…The gas mixture viscosity can be calculated using Chapman-Enskog theory (Bird et al, 1960) using the viscosity of each gas at certain temperature. (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) in which φ ij is defined as: (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) where n is the number of chemical species in the mixture, x i and xj are mole fractions of species i and j, and μ i and μ j are the viscosities of species i and j at the control volume temperature. M i and Mj are the corresponding molecular weights of the gases.…”

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

“…For the purpose of calculating the Biot number for the gas mixture, thermal conductivity for the gas mixture needs to be calculated. This is accomplished by calculating the thermal conductivity of each gas as a function of temperature using Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) from Chapman-Enskog theory (Bird et al, 1960).…”

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

“…where φ ij is obtained from Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20).…”

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

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Development of design and simulation model and safety study of large-scale hydrogen production using nuclear power.

Gelbard¹,

Rodríguez³

et al. 2007

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Before this LDRD research, no single tool could simulate a very high temperature reactor (VHTR) that is coupled to a secondary system and the sulfur iodine (SI) thermochemistry. Furthermore, the SI chemistry could only be modeled in steady state, typically via flow sheets. Additionally, the MELCOR nuclear reactor analysis code was suitable only for the modeling of light water reactors, not gas-cooled reactors. We extended MELCOR in order to address the above deficiencies. In particular, we developed three VHTR input models, added generalized, modular secondary system components, developed reactor point kinetics, included transient thermochemistry for the most important cycles [SI and the Westinghouse hybrid sulfur], and developed an interactive graphical user interface for full plant visualization. The new tool is called MELCOR-H2, and it allows users to maximize hydrogen and electrical production, as well as enhance overall plant safety. We conducted validation and verification studies on the key models, and showed that the MELCOR-H2 results typically compared to within less than 5% from experimental data, code-to-code comparisons, and/or analytical solutions.

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Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

“…where φ ij is obtained from Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20).…”

Section: Analysis Methods For Transient Radial Temperature Profilementioning

confidence: 99%

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Development of design and simulation model and safety study of large-scale hydrogen production using nuclear power.

Gelbard¹,

Rodríguez³

et al. 2007

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Transient Analysis of Sulfur-Iodine Cycle Experiments and Very High Temperature Reactor Simulations Using MELCOR-H2

et al. 2009

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Modeling of a Z-IFE Hydrogen Plant Using MELCOR-H2

Cited by 2 publications

References 2 publications

Development of design and simulation model and safety study of large-scale hydrogen production using nuclear power.

Development of design and simulation model and safety study of large-scale hydrogen production using nuclear power.

Transient Analysis of Sulfur-Iodine Cycle Experiments and Very High Temperature Reactor Simulations Using MELCOR-H2

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