基于镀银纱线的电加热织物温度场模拟与电热性能

运用ANSYS有限元模拟软件对镀银纱线在织物中加热过程进行数值模拟,并通过调整镀银纱线之间的距离和施加电压分析不同条件下加热织物内部和周围空气中热场分布情况。根据模拟结果制备镀银纱线加热织物,验证模拟结果并研究电加热织物电热性能。结果表明,随着电压的增加,镀银纱线平衡温度升高,当输出电压为7V时,镀银纱线在织物中实测温度可达109.7℃。设定镀银纱线间距为3mm,使镀银纱线在较低成本下获得较高的表面温度均匀性。加热织物的升温速度和平衡温度随着功率密度的增加而增加,模拟结果与实测结果趋势一致且结果偏差小于4.5%,说明有限元分析结果能够作为镀银纱线加热织物制备的重要参考依据。

Electric heating fabrics based on silver yarns and simulation of temperature field

ANSYS finite element simulation software was used to simulate the heating process of silver coated yarns in fabric.The thermal tiled distribution of heating fabric in different condition was analyzed by adjusting the distance between the silver coated yarns and output voltage.The heating fabric was prepared by the results of finite element simulation.The electrical heating property of heating fabric was researched and contrast with the results of finite element simulation.The result shows that,the equilibrium temperature of silver coated yarns rise with the increase of output voltage.The temperature is 109.7°C by the output voltage i s 7V.Thedistanceof silver coatedyarn in fabric is 3mm,which makes the surface temperature of heating uniform while the cost of silver coated yarns s lower.The equilibrium temperature and the heating speed rise with the increase of power density.The results of simulation are consistent with the actual results and the deviation is less than 4.5%.The results of finite element simulation can be important reference to guide the fabrication of heating fabric based on silver coated yarns.