BO Lin, SUN Baozhi, GAN Yiran, et al. Simulation of heat transfer performance of once-through steam generator under primary side disturbance[J]. CIESC Journal, 2018, (S1): 64-71.
BO Lin, SUN Baozhi, GAN Yiran, et al. Simulation of heat transfer performance of once-through steam generator under primary side disturbance[J]. CIESC Journal, 2018, (S1): 64-71.DOI: 10.11949/j.issn.0438-1157.20180281.
the secondary phase transformation process of the OTSG is divided into five heat transfer regions
and then build the one-dimensional homogeneous flow mathematics model based on distributed parameter method. Taking simulation for the case of the primary side coolant inlet conditions change
then analyze the phenomenon of dryout in the steam generator and dynamic response characteristics of primary and secondary side parameters. The simulation results show that the outlet steam can not reach overheating when the inlet enthalpy of the primary side coolant decreases by 5%. The length of the preheating section and the nucleation boiling section increase greatly
the dry point is moved 9.14 m.When the primary side inlet flow decreases
the overheat degree of the outlet steam is reduced
and the maximum moving distance of dry point is about 2.42 m.