1. Load on the Electric Steam Generator: When the load on the steam generator rises—meaning more steam is produced per hour—the velocity of steam within the boiler drum accelerates. This increased speed can carry small droplets suspended at the water surface, reducing steam quality. This issue becomes particularly critical during fluctuations or overloads, where even low salinity in the boiler water can lead to significant steam-water carryover.
2. Pressure Changes in the Electric Steam Generator: A sudden drop in pressure causes steam to expand, increasing its volume and velocity. This rapid movement can easily pick up tiny water droplets, negatively impacting steam quality.
3. Salinity Levels in Boiler Water: Boiling water in the steam generator creates numerous bubbles. When these bubbles burst near the water's surface, they release small droplets. Normally, these droplets settle back due to gravity unless the water becomes highly concentrated. As evaporation progresses, salt levels rise, enhancing surface tension and forming thick foam layers. These conditions make it easier for droplets to be swept away by ascending steam, degrading steam quality and potentially leading to severe steam-water surge phenomena.
4. Water Level in the Electric Steam Generator: Excessive water levels reduce the available space for steam separation, forcing droplets into the steam flow and worsening quality. Fluctuations in water level also contribute to transient steam-water carryover, further compromising steam purity.
In summary, maintaining optimal operating parameters—such as balanced loads, steady pressures, controlled salinity, and appropriate water levels—is crucial for preventing steam quality degradation and avoiding operational hazards like steam-water surges. Understanding these dynamics ensures safe and efficient steam generation.
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