Når du bruker elektriske varmekabler på rørledningsutstyr, er hvordan du velger riktig produktmodell en av de viktige faktorene for den termiske isolasjonseffekten, fordi det ikke bare kan spare penger, men også kan spille den beste effekten i henhold til forskjellige modeller. I selve utvalget må ulike faktorer vurderes grundig, som: sikkerhet, egnethet, kostnadskontroll, strømforbruk osv., og om det er alvorlig korrosjon eller ikke.
Blant dem er temperaturen en viktig faktor i valg av type elektrisk varmekabel, så når temperaturen oppfyller kravene, bør den høye temperaturen oppnådd ved utilsiktet drift også vurderes:
1. The electric heating cable whose working temperature is higher than the maintenance temperature of the pipeline by a certain range should be selected, so as to ensure that the electric heating cable has enough power in the designed working temperature area, which can compensate the heat loss of the system.
2. Determine whether there will be occasional temperature rise in the pipeline, such as steam, hot water, hot oil cleaning and other pipelines, so the temperature of the selected electric heating cable should not be lower than the occasional temperature rise.
3. If the occasional temperature rise of the pipeline is higher than the withstand temperature of the electric heating cable, the installation method can be adjusted after thermal estimation, and a suitable layer can be added between the electric heating cable and the pipeline. Insulation layer to alleviate the impact of occasional temperature rise on the electric heating cable.
The user may not be very clear about the selection of the electric heating cable model. At this time, the manufacturer's technicians can help to choose, and the user needs to provide the manufacturer's technicians with the detailed parameters of the insulated equipment, so that the electric heating technicians can choose for the user. Appropriate electric heating cable model to avoid the influence of thermal insulation effect due to improper selection of model.