The influence of heat flux on melting ice on concrete pavement with carbon fibre heating wire

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Lai, Y.^1,2 ; Liu, Y.^1,2 ; Su, X.^1,2 ; Ma, D.X.^1,2 ; Wang, P.^1,2

China Airport Construction Group Corporation, Beijing

100101, China^1

Beijing Super-Creative Technology Co. LTD, Beijing

100621, China^2

关键词: Adverse effect;    Air temperature;    Constant temperature;    Energy distributions;    Pavement temperature;    Rapid temperature;    Temperature rising;    Total energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/2/022021/pdf
DOI  :  10.1088/1757-899X/392/2/022021

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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/m2, 400 W/m2, 500 W/m2 and 600 W/m2, 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.