Why is the heat transfer oil expansion tank placed at such a high level?
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Why is the heat transfer oil expansion tank placed at such a high level?
It seems that it should be higher than that of all equipment and pipelines that use heat transfer oil!
Placing it at a high position allows the oil and gas to be separated; the gas can be vented away while the oil remains in the system. If it’s at a lower level, wouldn’t the heated and expanded air push the oil out? Oil will oxidize when it enters the expansion tank; although it is usually protected by nitrogen, it is still best to prevent the heat transfer oil from coming into contact with air
Yes. It is the highest point of the heat transfer oil system, right?
Overall, it is higher than the highest point of the heat transfer oil system. As for by how much it is above the highest point of the heat transfer oil system, it is determined by the difference between the outlet pressure of the heat transfer oil pump and the return oil pressure (pressure at the pump inlet), in other words, [the pump’s suction head and the system’s return oil pressure]
Is the specific reason for such a high height to serve the heat transfer oil pump?
Yes, as the system temperature rises, the volume expands or the pressure increases; when this exceeds the pump’s suction force and flow rate, the heat transfer oil is forced into the expansion tank. Conversely, the heat transfer oil in the expansion tank automatically flows back into the circulation system to compensate for this.
Absorb the expansion of heat transfer oil and discharge non-condensable gases.
To better remove gas from the oil without carrying any oil along.
Large height difference: Used to replace the material inside the furnace tubes during emergency shutdowns, in order to prevent coking