Experimental research on the minimum spray flux for cooling of spent fuel rods with low decay heat in PWR
LU Daogang*， DUAN Xiaohan， HAN Yidan
（ School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206； ）
Abstract： Safety of spent fuel pool has been paid much attention since Fukushima nuclear accident. So, it’s necessary to research influencing factors of spray cooling. A set of spray cooling experimental device for spent fuel pool is built. Electrically heated rods 5×5 are used to simulate spent fuel rods of spent fuel pool in Nuclear Power Plant to get different minimum spray flows when temperature of clad is kept in 300℃. Besides, change nozzle types to gain different granularity of spray water to research its influences on spray cooling effects for spent fuel pool. The results show that granularity of spray water has great effect on minimum spray flow.
Keywords： Nuclear safety; Spent fuel pool; Spray cooling; Fluid shape; Particle size
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