Highly efficient energy utilization with electrical trace heating

　　In modern industry and many infrastructure fields, heat tracing technology is the key to ensure the normal operation of various pipelines and equipment. Among them, the electric accompanying heat as an advanced accompanying heat way, in the energy utilization shows many advantages. The following detailed description electricity accompanies the heat compared with the traditional accompanies the heat, its in the heat dissipation area, the heat exchange efficiency, the heat transmission loss, the accurate temperature control and the comprehensive benefit and so on the advantage.

　　First, the electric accompanies the heat and the traditional accompanies the heat way in the energy utilization comparison

　　(A) The heat dissipation area and the heat consumption

　　The traditional steam or the hot water accompanies the heat there are some energy utilization disadvantages. For example, the steam or hot water accompanies the hot pipe in laying always to expand the heat dissipation area of the heat preservation layer, thus increases the heat dissipation. And the electricity accompanies the heat product general shape size smaller, laying will not change the pipeline insulation layer shape, the heat consumption is relatively lower, helps to improve the energy utilization efficiency.

　　(B) heat transfer efficiency Heat transfer efficiency is an important index to measure the effect of energy utilization of accompanying heat method. Steam or hot water accompanying heat pipe and process pipeline only line contact, its heat transfer efficiency is generally 40% - 60%. In contrast, electric heat tracing products are flat, with the help of aluminum tape can form a wide heat exchange surface, heat exchange rate is as high as 90% - 96%. This means that the electric accompanying heat is more efficient in transforming energy into effective accompanying heat, and can make full use of electric energy to realize the heating of pipeline or equipment, and reduce the waste of energy.

　　(iii) Superheat compensation and heat transmission loss When steam or hot water is used to accompany heat, in order to ensure the temperature at the far point of the pipeline, as well as to take into account the heat loss and leakage of transmission along the way, it is necessary to superheat compensation at the near point. However, this superheat compensation leads to additional energy consumption because more heat needs to be supplied to meet the demand at the far point. In contrast, electrical trace heat does not require superheat compensation because it radiates heat uniformly over the entire length of the line. In addition, steam and hot water heat transmission losses are much greater than electrical energy transmission losses, especially when the heated pipe is farther away from the heat source, there are many losses along the line of steam or hot water, while the power transmission losses are less. Therefore, the electric accompanies the heat in the heat transmission process energy loss is relatively small, more conducive to the effective utilization of energy.

　　Second, the electric accompanies the heat the accurate temperature control and the energy saving Ideal accompanies the heat pipeline to require all year round accompanies the heat even every day and night accompanies the heat to change with the air temperature change. The electric accompanies the heat to have the unique advantage in this aspect, it can through the temperature control system to track the temperature strictly to achieve the required heat. Steam or hot water is extremely difficult to ensure such precise temperature control. For some process pipelines with strict temperature control requirements, electric trace heat can not only save energy, but also ensure the process requirements. Through the accurate temperature control, the electricity accompanies the heat to avoid the excessive heating or the situation of insufficient heating, makes the energy use just right, maximizes the energy utilization efficiency.

　　Third, the electric accompanies the heat in the energy utilization comprehensive benefit In addition to the direct energy consumption shows the advantage, the electric accompanies the heat also can bring other energy related benefit. For example, electric accompanying heat can save steel. Steam or hot water accompanies the heat pipe usually for one to come and one to go the double pipe, plus is accompanied by the pipe then has the three pipelines, adopts the electricity to accompany the heat then can cancel the two ways to accompany the heat steel pipe. This indirectly reduces the energy consumption in the steel production process, from the perspective of the whole industrial chain, helps to improve the comprehensive utilization efficiency of energy.

　　To sum up, the electricity accompanies the heat in the energy utilization has the significant advantage. Compared with the traditional steam or hot water accompanying heat, it is outstanding in many aspects such as heat dissipation area, heat exchange efficiency, heat transfer loss, precise temperature control and comprehensive benefit. With the continuous growth of energy demand and the improvement of the requirements of energy utilization efficiency, the electric accompanying heat technology will be widely used in more fields, and make greater contribution to the realization of efficient and sustainable energy utilization.