A first-order model represents the reactor coolant inlet/outlet and the steam generator coolant inlet//outlet, and the coolant pipe. These are lumped into a hot-leg and the cold-leg.
In this model \(\Delta T_{HL}\) is the hot-leg temperature deviation, \(\Delta T_{CL}\) is the cold-leg temperature deviation, \(\Delta T_P\) is the primary fluid lump temperature deviation, \(\tau_{HL}\) is the hot-leg heat-transfer time constant, \(\tau_{CL}\) is the cold-leg temperature heat transfer time constant.
- chenComprehensiveRealTimeHardwareIntheLoop2020
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[[First-Order Systems]]
[[Heat Transfer Methods]]
Nuclear Submarine Model