在各工业部门,原料和成品的制造、输送、储存等设施中,遇到在常温下呈高粘度及至固化的液体,往往要设置伴热保温设施。近年来,随着系统自动化和节能的开展,以电力为加热源的方法已逐渐成为主流。电加热法从加热原理来看,有电阻加热、感应加热、电介质加热、电弧加热、红外线加热、微波加热等方式。但在管道、工艺设施等方面,主要采用电气设备技术基准 In all industrial sectors, raw materials and finished products manufacturing, transportation, storage and other facilities, encountered at room temperature was high viscosity and liquid to be cured, it is often necessary to set up thermal insulation facilities. In recent years, with the development of system automation and energy saving, the method of using electric power as a heating source has gradually become the mainstream. Electric heating method from the heating principle point of view, resistance heating, induction heating, dielectric heating, arc heating, infrared heating, microwave heating and so on. But in the pipeline, process facilities, etc., the main use of electrical equipment technology benchmarking