Are there thermocouples inserted in the atmospheric and vacuum distillation oil transfer line to measure temperature?
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I would like to ask the experienced experts: are thermocouples installed along the atmospheric and vacuum distillation oil transfer lines to measure temperature? If so, from what angle is it inserted more deeply? What is the approximate diameter of the thermocouple sheath?
In my opinion, there shouldn’t be one; it’s already good enough if it can measure the temperature at the entrance and exit
There definitely are. Nowadays, mixed temperatures in various ranges are available; generally, a double-tube design is used
Generally, there is none. The reason is that in the phase transition zone, the oil inside the oil transfer line undergoes a phase transition; part of it absorbs the latent heat of vaporization and turns into the gas phase, while the portion that does not turn into the gas phase releases sensible heat, which is why the temperature in this area is unstable.