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在文献[1]、[2]中,我们对管状试验段底部淹没时的传热性能进行了试验研究,分析了淹没速率、初始壁温、入口水温、加热功率、蒸汽背压、表面氧化层诸因素对再湿的影响。本文将对套管内元件再淹没时的传热与夹带特性进行试验研究。在评价危急冷却系统的有效性时,再湿速度具有决定的意义,但夹带特性也很重要,它对元件的预冷与温度的回转常常起关键作用。本试验不仅将详细研究各种热工参数对再湿速度的影响,而且还对通道空泡分额分布、坍陷液位高度、液滴夹带量、出口蒸汽流量、出口流体含汽量、出口蒸汽温度等参数进行了仔细的测量,分析各参数对液滴夹带的影响。
In [1] and [2], we study the heat transfer performance of submerged bottom of tubular test section. The effects of submergence rate, initial wall temperature, inlet water temperature, heating power, steam back pressure, surface oxide layer The impact of various factors on rewet. This article will test the heat transfer and entrainment characteristics when the components in the casing are submerged. Re-wetting is of decisive importance in assessing the effectiveness of a critical cooling system, but the entrainment characteristics are also important. They often play a key role in the precooling of the components and the rotation of the temperature. This experiment will not only study in detail the influence of various thermal parameters on rewetting speed, but also analyze the distribution of cavitation volume, height of slump, entrainment of droplets, outlet steam flow, outlet steam vaporizer, outlet steam Temperature and other parameters were carefully measured and analyzed the impact of the parameters on the droplet entrainment.