暖通空调隧道电缆的热湿耦合

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI:10.1109/AEERO52475.2021.9708248

Ziqi Lin, Hua Bao, Qiuqin Sun, Tangsheng Yang, Rui Wu, Jie Chen

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引用次数: 0

摘要

隧道电缆的容量很大程度上取决于其向周围空气扩散热量的能力。这种能力受到潮湿条件的显著影响。基于有限元方法，建立了高压交流隧道电缆的三维模型，并将热湿耦合。空气的热性能随着相对湿度和温度的变化而变化。蒸发潜热已包括在内。热分析是通过记录电缆最高温度作为时间和相对湿度的函数来进行的。温度梯度不仅沿径向存在，还沿周向和纵向存在。

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Heat and Moisture Coupling for HVAC Tunnel Cable

The ampacity of tunnel cable is heavily dependent on the capacity to diffuse heat into surrounding air. This ability is significantly influenced by wet conditions. Based on the finite element method (FEM), a 3D model of high voltage alternating current (HVAC) tunnel cable is developed, coupling heat and moisture transfer. The thermal properties of air are changing with relative humidity and temperature. Latent heat of evaporation is included. Thermal analysis is conducted by recording the cable maximum temperature as a function of time and relative humidity. Temperature gradient exists not only radially, but also circumferentially and longitudinally.

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2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)

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