In this paper, the method of melting ice with carbon fibre heating wire (CFHW) buried in concrete pavement is presented to avoid the adverse effects of snow-melting chemicals. The melting ice effect, pavement temperature and energy distribution are analysed. It is shown that, with the air temperature of-5°C and 0.4 m/s wind speed, the time of melting 6.5 mm thick ice on pavement is 8.17 hours, 5.5 hours, 4.25 hours and 3.33 hours when the heat flux is 300 W/m~2, 400 W/m~2, 500 W/m~2 and 600 W/m~2, respectively. The pavement temperature can be divided into three stages at the depth of 0.5 cm, including temperature rising process, constant temperature process and rapid temperature increase process. The greater the heat flux, the less the time it takes to melt ice, the lower the total energy needed to melt ice. This work is important for choosing how much heat flux to melt ice.
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机译:在本文中,提出了用埋在混凝土路面中埋入的碳纤维加热丝(CFHW)熔化冰的方法,以避免融雪化学品的不利影响。分析了熔炼冰效果,路面温度和能量分布。结果表明,随着5°C和0.4米/升风速的空气温度,路面上熔化6.5毫米厚的冰,为8.17小时,5.5小时,4.25小时和3.33小时,热通量为300 W / m〜2,400 w / m〜2,500 w / m〜2和600 w / m〜2。路面温度可分为0.5厘米深度的三个阶段,包括温度上升过程,恒温过程,快速升温过程。热通量越大,熔化冰的时间越少,熔化冰所需的总能量越低。这项工作对于选择熔化冰的热量有多少是重要的。
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