碳纤维带电热技术的试验研究

提出了一种基于碳纤维带的新型室内地暖电热系统,并介绍了电热板的设计思路、试验模型和建造过程,得到了试验结果.试验通过将三条宽度为50mm,间距为200mm的碳纤维带预埋在水泥砂浆中构成电热板,检测不同位置温度随时间的变化和系统能耗,以获得系统的电热性能.结果表明:电热系统升温迅速,平均升温速率能达到1.83℃/min.竖直方向的温度变化梯度远大于水平方向温度变化梯度.碳纤维带电阻稳定性较好,地暖反射膜和保温板的隔热效果良好,温控装置对减少能耗成效显著.

Experimental Study on Electrical Heating Technology Utilizing Carbon Fiber Tape

This paper proposed an innovative design for in-door electrical heating system that uses commercially available carbon fiber tape (CFT). The design of the heating panel, layout and the construction of a prototype were presented with experiment results. The heating panel was made of three carbon fiber tapes and embedded in cement mortar. Each CFT was 50 mm wide with a spacing of 200 mm. Several experiments were conducted to examine the performance, temperature variation with time and location, and energy consumption of the proposed system. The experiment result has shown that the heating system performs satisfactorily and is heated up quickly with an average speed of 1.83 °C/min. The temperature gradient in the vertical direction is much larger than that in the horizontal direction. The electrical resistance of the CFT is stable, and the reflective membrane and insulation board are effective in reducing the heat transfer towards the bottom. The automatic temperature control device can reduce the energy consumption significantly.