Experimental Research of Natural Circulation Characteristics in Secondary Side Passive Residual Heat Removal System
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摘要: 利用三代核电非能动余热排出实验装置(ESPRIT)对华龙1号反应堆的二次侧非能动余热排出系统(PRS)的自然循环特性进行了瞬态实验研究。实验在原型工况、提升功率工况和提升阻力工况下开展。通过本试验研究,获得了华龙1号反应堆核电厂全厂断电事故工况下,PRS系统的响应特性和运行能力。实验数据证实,PRS系统事故冷却水箱(水池)设计容积满足系统启动后72 h的排热要求。功率提升6%后,水池依然有足够的冷却能力。原型阻力提升50%后,系统压力始终高于原型阻力工况。试验过程中一直存在有效的自然循环,在水池作用下,系统温度和压力持续降低。
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关键词:
- 非能动余热排出实验装置(ESPRIT) /
- 自然循环 /
- PRS /
- 华龙1号 /
- 瞬态实验
Abstract: The natural circulation characteristics in the secondary side passive residual heat removal system is experimentally studied on ESPRIT（Emergency Secondary Passive Residual heat removal system Integral Test facility）. The experiment is carried out under prototypical, elevated power and elevated resistance conditions, and the response characteristics and operation capability were studied under station blackout scenario. The test data reveal that the design volume of the cooling water tank satisfies the heat removal demand in 72 hours. The heat sink possesses sufficient cooling capability after the power is elevated by 6%. The system pressure in elevated resistance condition is always higher than that of the prototypical condition. The natural circulation always remains and the system temperature and pressure keep decreasing in elevated resistance condition.-
Key words:
- ESPRIT /
- Natural circulation /
- PRS /
- HPR1000 /
- Transient experiment
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