How should I provide the electrical engineering team with the necessary requirements for pipeline electric heat tracing?
Thread Content
There are several pipes in the process that require electric heating; how should we specify these requirements to the electrical team? The piping work isn’t yet complete, but the electrical team has put forward certain requirements. To keep the project on schedule, an approximate length for the pipelines has been estimated, and the power requirement for the electric heating strips has also been calculated. What other requirements are needed?
I think it’s 1) the physical and chemical properties of the medium, 2) the material of the pipelines, including the length as mentioned by the original poster, 3) the operating conditions, especially the operating temperature, 4) the number of phases, and the explosion-proof rating
The main factor for electrical engineering is the electrical load; they choose transformers, distribution cabinets, and so on
I’d like to ask gently, how do you refer to “several phases”? :o
1. The design temperature of the pipeline: The outer layer of the temperature-regulating heat trace is made of polymer, and it can withstand temperatures ranging from 80 to 180 degrees. Different materials result in different temperature ranges, and this affects the price as well. 2. It comes down to whether it is anti-freezing heating or temperature-maintaining heating; since the set temperatures are different, the electrical design for the heating circuits will be separate, which results in higher costs. The temperature maintenance value also needs to be provided to the electrical system. 3. The temperature range to be maintained depends on the properties of your material; generally, it is required to maintain a minimum temperature (by using heating when power is supplied). As the temperature rises, the resistance value of the electric heating tape also increases, thereby reducing the power to achieve equilibrium. But this equilibrium temperature is not something you can control; it may be 10–20 degrees higher than the desired maintenance temperature. Will your medium be affected? For example, in the case of pure acetic acid, crystallization occurs at low temperatures, while its corrosiveness increases rapidly at high temperatures; therefore, the temperature in both areas needs to be controlled. So the control circuit needs a temperature sensor plus a separate thermostat to \"compress\" the temperature range, and this also incurs costs. That’s about it; these are the main factors that affect electricity prices. Electrical heating is calculated by specialized manufacturers, while the electrical system is designed in coordination with that. @jiaguoyun
Just to ask, does the electric heating tape come with its own power distribution cabinet? Should the electrical load be calculated separately for each pipeline, or as a total load? Thank you!
Just to ask, does the electric heating tape come with its own power distribution cabinet? Should the electrical load be calculated separately for each pipeline, or as a total load? Thank you! This depends on the specific operating procedures of the project and the requirements regarding the scope of supply. If the electrical team is only responsible for providing the main power supply, with the rest to be handled by the supplier of electric heating, then it is sufficient to consider the electrical load as part of the total load ； If all power is supplied by the electrical department, and the heat tracing for each branch pipe is powered separately, then it is necessary to provide the electrical department with information on how many pipes there are and the approximate load of each pipe. The electrical department will then need to select circuit breakers, cables, etc., based on the loads you provide