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随着现代工业的发展,电伴热工艺方式已被广泛应用于石油、化工、电力、冶金、食品、船舶、海洋平台等场所的管道、阀门、容器、仪表及管线的防冻、防凝、保温。由于电伴热方式具有许多优点,它已有逐步取代传统的蒸汽、热水伴热之趋势。 概念:电伴热是利用电能致热在线长度或大平面上发出的均匀的热量,以弥补被伴热物体在工艺流程中的耗散热,维持其介质温度在适宜的工作范围内,满足其工艺技术的要求。特点:电伴热和电加热的最大区别:一个为大平面或线长度上均匀放热,热场均匀;一个为面积或局部集中加热,热场不均,温度梯度大;一个为低功耗,低表面负荷;一个为高功率,高表面负荷,因此,两种加热有其本质上的不同。 优点:电伴热与蒸汽热水伴热相比较其主要优点如下:
With the development of modern industry, electric heat tracing technology has been widely applied to the antifreeze, anticorrosion and insulation of pipes, valves, containers, meters and pipelines in petroleum, chemical, electric power, metallurgy, foodstuff, ships and offshore platforms . Because electric heat tracing has many advantages, it has gradually replaced the traditional steam, hot water heating trend. Concept: Electric heat tracing is the use of electric energy to heat the length of the line or a large flat surface issued by the uniform heat to make up for the heat tracing objects in the process of heat dissipation, maintaining its temperature in the appropriate medium within the scope of work to meet its technology Technical requirements. Features: The biggest difference between electric heating and electric heating: one for large flat or linear length of the heat evenly, the thermal field is uniform; one for the area or local heating, uneven thermal field, a large temperature gradient; one for low power consumption , Low surface load; one for high power, high surface load, therefore, the two heating is essentially different. Advantages: Electric heat tracing and steam hot water heating compared to its main advantages are as follows: