SBWR Model for Steady-State and Transient Analysis

Table 6

Fuel model parameters [14].

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Fuel

𝐾_𝑓=3825.02⟨𝑇_𝑓⟩+129.41+6.08×10⁻¹¹⟨𝑇_𝑓⟩³,J/m⋅s,

(𝜌𝐶𝑝)_𝑓=8.5103×10¹¹𝑒^{535.28/⟨𝑇𝑓⟩}⟨𝑇_𝑓⟩(𝑒^{535.28/⟨𝑇𝑓⟩}−1)²+2.4348×10²⟨𝑇_𝑓⟩+1.6609×10¹⁶𝑒^{−1.8970𝑥104/⟨𝑇𝑓⟩}⟨𝑇_𝑓⟩²,J/m³⋅K,

𝑉_𝑓=8.9335m³.

Clad

𝐾_cl=7.51−0.0209𝑇_cl−1.45×10⁻⁵𝑇²_cl+7.67×10⁻⁹𝑇³_cl,J/m⋅s,

(𝜌𝐶𝑝)_cl=1.8204×10⁶+3.0386×10⁵𝜃_cl−1.0637×10⁵𝜃²_cl+2.8102×10⁴𝜃³_cl+−2723.6𝜃⁴_cl,J/m³⋅K,

𝜃_cl=𝑇^cl−300200.

Gap

𝐾_ga=𝐻^gap𝛿_gap=2936.81.14×10⁻⁴,J/m⋅s.

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