摘要:主热交换器是岷江试验堆(MJTR)的关键部件之一,其换热能力决定MJTR能否安全运行,为保证其换热能力,换热器运行一段时间后需要清洗。本文介绍了在已知主热交换器总传热系数,一次水、二次水的出、入口水温等条件下,通过对对数平均温差、换热面积的估算,并结合二次水出、入口压差,判得出主热交换器二次侧压差大于或等于35.15 kPa时,主热交换器换热性能已有所下降,应对主热交换器进行清洗的结论。
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