Heat exchanger
Thread Content
When the installation height of the heat exchanger is greater than 10 meters, attention should be paid to the design of the return water pipeline to prevent the cooling water from vaporizing inside the heat exchanger. What does this mean?
If the pipe cannot be completely filled, wouldn’t that create a vacuum condition?
How can a vacuum form? I don’t quite understand it
I saw this in a book; I don’t quite understand the meaning of this sentence, so I’m asking for help
This is the same principle as what needs to be considered regarding the vaporization of the medium at the pump’s inlet; if the installation height is too high, the pressure drop increases, and vaporization tends to occur as the heat exchange temperature rises
Prevent excessively low return water pressure from causing air blockage and water hammer
The cooling water flows from the pump to the heat exchanger driven by the pump, resulting in a certain flow velocity. As it exits the heat exchanger and flows downward from a height of ten meters, gravity causes an acceleration; the flow velocity at the outlet is higher than that at the inlet, which may lead to the formation of a vacuum.