@bimr-thank you very much for the links you provided. I will go through them and get back to you.
@Littleinch-Thank you. I considered your suggestion of PD pumps.
@itdepends- Thank you. Pressure is from the pump. Tank is not pressurized. I do not know any details about the ground levels. So assumed everything is pumped. These assumptions may be revised/revisited later once I know the details. The work I am doing is preliminary to assess how much...
In the attached, in figure 1, after the flow is collected in header pipe from all individual pipes, it must be pumped to at least 4m elevation.I know the frictional head losses in individual and header pipes. Based on this total head (static head+frictional head (converting into discharge...
@itdepends- I did not assume gravity could feed the main pipe. Flows in all pipes is pressurized flow. I attached a figure showing approximate arrangement of 1) flows from individual pipes and header pipe to the treatment system and 2) return flows from the treatment system back to the tanks...
@BIMR:It is an aquaculture application. Idea is to withdraw water at a rate from tanks, collect in main pipe, treat and return.I am assuming a constant flow. I came across this in one of the text books, but could not completely view it. So I thought why not calculate to understand the losses...
@BigInch and @katmar- Thank you. In the design problem the pipe is ~4000m. Now I have a question about pumps. I am assuming that the flow from small individual pipes be pumped into the main pipe. Then I have to count the frictional losses in the small pipes too? If the main pipe is a...
@BigInch, thank you. Yes I understand that the velocity changes with the volumetric flow. I attached a very crude form of the pipes diagram that I have been referring to. Arrows in the diagram refer to small pipes. My question: is it ok to have an increased and decreased velocities between...
@BigInch, Thank you for your reply. I would like to elaborate and confirm about one more point.
When I am sizing each section of the main pipe, the velocity is not constant (slightly decreasing and increasing) in every section due to the available pipe diameters. My question is as long as the...
Hi,
I have design situation where I have one main pipe that receives flows from several pipes at regular intervals in length of the main pipe. So ultimately the main pipe must handle flows from all individual small pipes and pump it to the next unit in operation. The flows from several small...
