Factors affecting pipeline pressure difference
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As indicated in the title, the outlet pressure of the feed pump at our factory is 0.6 Mpa; by the time it reaches the raw material buffer tank, this pressure drops to 0.4 Mpa. What are the factors that affect the pressure difference in the pipes? Thank you so much, expert!
Valves, elbows, and diameter changes in pipes all cause pressure losses; a rough inner surface of the pipes as well as molecular collisions also result in pressure losses.
The length of the pipeline, the number of replacements such as elbows and valves, and the height difference. Additionally, it is also related to the roughness of the inner wall of the pipe.
I think reducing the pressure difference mainly involves shortening the pipe length and reducing the data related to the pipe fittings.
The pressure readings on the pressure gauges in the process flow cannot be considered solely based on head loss; an overall assessment of the entire process flow is necessary. If the pressure measurement point in the pump outlet pipeline, located at the raw material buffer tank, is close to this tank, then the pressure measured is actually the pressure within the raw material buffer tank, and other factors that affect the pressure in that tank must also be taken into account.
First of all, your question is quite general. You mentioned that the pressure in the buffer tank is 0.4 MPa; may I ask how you measured this pressure? What is the distance from the pump to the buffer tank? Based on a pump outlet pressure of 0.6 MPa, it can be inferred that the pump’s power is not high; therefore, if the distance to the buffer tank is large or the pipe diameter designed is large, it is not surprising for the pressure reaching the buffer tank to be 0.4 MPa
There is a pressure gauge on the buffer tank; from everyone’s replies, it seems that there are too many pipe bends, and the power of the feeding pump is 7.5 KW