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蒸汽蓄热器内部充热过程是蒸汽与水两相流体强烈地混合，传热与传质的复杂过程。本文建立了启动过程中水空间温度场分布规律的数学表达式，并绘制了热水循环流动的流线，较正确地反映了蒸汽蓄热器内部温度场的分布规律。
The internal heat storage process of steam accumulator is a complicated process of steam and water two-phase fluid mixing strongly, heat transfer and mass transfer. In this paper, the mathematical expression of the distribution law of the temperature field in the water space during the start-up process is established, and the flow line of the hot water circulating flow is plotted, which more accurately reflects the distribution law of the temperature field inside the steam accumulator.