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I’m asking the experts here: why does the pressure increase after steam heat exchange?

2024-04-26View Original

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I would like to ask the experts: why superheated steam at 4.2 MPa and 450°C? After heat exchange, the temperature dropped to 279°C, while the pressure increased to 4.5 MPa.
Reply #22024-04-26
This phenomenon may be caused by an increase in resistance within the heat exchange system or changes in the flow path. Normally, the cooling of steam in a heat exchanger should be accompanied by a decrease in pressure; however, if the steam flows through narrow or curved pipes during the heat exchange process, the fluid resistance increases, which can lead to an increase in pressure. Furthermore, abnormal pressure increases can also occur if the heat exchange system is improperly designed or operated, such as due to inadequate valve adjustment or blockages in the pipes. .
Reply #32024-04-26
It’s still pretty good, isn’t it? Haha
Reply #42024-04-27
I don’t understand what you mean by increased pressure? From that, I can see that MS has only one pressure bypass control valve. Since the flow in this path can proceed normally, it must be that the inlet pressure is high; how could the outlet pressure be high? Is it the pressure that’s causing the problem?
Reply #52024-04-28
The information I have at hand is like this; I just can’t figure it out, that’s why I’m asking the experts here
Reply #62024-04-28
That’s what’s written in the pipeline table; this seems to be the intended design, and it’s not due to improper operation
Reply #72024-04-28
Next to the flowchart, there is also a piping table, which contains information on pressures

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