Return position of the pump’s minimum return line
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The minimum return line of the pump leads back to the upstream container, or to the feed line of the upstream container. Is the difference big?
The effect of the pump’s minimum return line returning to the upstream container or to the feed pipeline of the upstream container is the same; in either case, a new gas-liquid equilibrium and gas-liquid separation are established within the pump inlet tank.
Returning to the feed pipeline, it is not advisable to operate at a low flow rate for an extended period; otherwise, the pump will do work on only a limited volume of liquid, resulting in a significant rise in temperature.
Agree with the third floor’s opinion; it’s better to return to the upstream container. If there is no spare port on the container during modification, a feed pipe can be considered.
Theoretically, there isn’t much difference; in any case, for pumps, the minimum flow rate control is achieved in both cases. However, I personally think it’s more reasonable to set it at the level where dissolution of gas occurs. At the very least, installing it on the pipeline increases the outlet pressure loss of the feed pump to some extent, which results in higher electricity consumption. Of course, if the return point is located close to the feed inlet, the resulting pressure loss is minimal and can be ignored. But it has no impact on this pump
Support those upstairs, they’ve learned something.:):)
It is generally returned to the upstream container, so that they do not affect each other.
It’s the same in all cases; it is recommended to return to the upstream container, as this provides better independence.