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为了提高三管潜热储能系统的凝固性能,本文将旋转机制应用到其凝固过程中并开展了相应的数值模拟研究。通过实验数据对数值模型的准确性进行了验证,深入探究了旋转对放热过程液相分布、温度分布和流速分布的影响;对比分析了无旋转状态和不同转速下,三管潜热储能系统凝固放热过程的液相演化、热能释放总量及热能释放速率。研究结果表明:旋转机制的加入能有效地降低相变材料凝固时间且增大热能释放速率,但在单个凝固周期内总热能释放量略有降低;相比于静置状态,0.50 r/min转速下相变材料凝固时间缩短了78.10%
该转速下的热量释放速率是静止状态的4.45倍,但总热能释放量降低了2.52%。本文研究结果为旋转机制在三管潜热储能系统中的设计和应用提供了参考。
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