Transient Analysis of Supercritical Water-Cooled Reactor with Main Feed-Water Parameter Changing

Abstract:

Based on a transient analysis code that developed with coupled neutron and thermal hydraulic calculation model for supercritical water reactor, the transient characteristics under feed-water parameter changing is detailed analyzed, including temperature decreasing, flow-rate decreasing and pressure increasing. The results show that, if no control system action given, flow rate or temperature decreasing would lead to the increase of main steam temperature and decrease of core power, but pressure increasing shows a little influence. If control systems are put into operation, transient characteristics will be obviously changed but finally recovered to normal level. As the same changing percentage 3% is selected, main steam temperature during pressure decreasing transient can reach its highest level in 510.9°C, and return to normal at the time of 90s. But for feed-water temperature decreasing transient, main steam temperature shows an obvious fluctuation during its adjustment and returns to normal until 170s from 503°C. In addition, compared with the results calculated by non-coupling calculation model, main steam temperature calculated by above coupling model shows a smaller deviation but a little longer time needed for returning to its normal value.

• Periodical: Advanced Materials Research (Volumes 516-517)
• Pages: 817-823
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.516-517.817
• Online since: May 2012
• Authors: Juan Chen, Tao Zhou, Feng Luo, Han Ding Wang
• Keywords: Coupling, Feed-Water Parameters, Supercritical Water-Cooled Reactor, Transient

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