For the condensate control in a reboiler, why is it required that the flow orifice plate be installed at a position 1.5 meters below the reboiler?
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For the condensate control in the reboiler, why is it specified that the vertical distance between the flow orifice plate and the reboiler must be greater than 1500 mm?
The installation requirements for orifice plates specify a straight pipe section of at least 10D in front and 5D behind. D is the pipe diameter.
I also want to see the experts' answers. I venture to guess: is it this height that ensures the medium measured at the orifice plate is free of vapor-liquid phases, thereby ensuring measurement accuracy?
I think the same; it seems to be to ensure a fully liquid phase at the orifice plate. But it’s impossible to figure out how it could be entirely in the liquid phase! Please give me some advice!
To understand this thoroughly, we need to communicate online. Our company has been dealing with orifice plates for 30 years – feel free to contact me if you have any questions! My QQ: 103756259
Possible reasons: 1. Ensure the fluid is in the liquid phase. 2. Ensure a fluid head of 1500 mm water column to increase the pressure difference before and after the fluid passes through the orifice plate, thereby ensuring measurement accuracy.
The vertical distance between the flow orifice plate and the reboiler must be greater than 1500 mm. The reason for this is as follows: the pressure drop across the flow orifice plate is generally around 10 kPa. If the vertical distance between the orifice plate and the bottom of the reboiler is small, then the liquid level of the condensate in the reboiler must be above 1000 mm in order for the condensate to flow out through the orifice plate. However, a high liquid level of condensate in the reboiler reduces the heat transfer coefficient, which results in insufficient area for the reboiler. Therefore, the vertical distance between the flow orifice plate and the reboiler must be greater than 1500 mm!
You’ve learned it; you’re truly an expert. Hehe
With the drawings, operating conditions, and an analysis of the requirements for the medium in use, everything becomes clear. The original poster is asking everyone to guess, which is a waste of time for both themselves and others; in the end, there’s no reliable answer. Hehe, that’s annoying. Additionally, the pressure difference before and after the orifice plate can vary quite significantly: up to 10 kPa
I despise yzflow; please don’t reply to pointless posts, okay? If it has no value, it’s better not to pollute such a wonderful space of ours, okay?
One more thing to add: the medium should be a saturated liquid, in order to prevent the condensate from vaporizing and causing inaccurate measurements.