Pipeline network calculation
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Have you all ever done calculations related to closed-loop water systems, pipe network pressure drops, and pipe diameter selection? Is it using simulation software? Should we just do a simple calculation? Also, what are the selection principles for the design of the expansion tank (size, operating pressure), etc.?
Regarding the pressure drop in closed water systems and the calculation for selecting pipe diameters, there are two main methods that can be used: 1. Manual calculation: If the piping system is relatively simple, manual calculations can be carried out using equations such as the Darcy-Weisbach equation or the Hamann equation. This requires some knowledge of fluid dynamics, including factors such as pipe roughness, fluid viscosity, and flow velocity. 2. Use simulation software: If the pipe network system is complex, such as having a large number of branches or requiring consideration of factors like time-based dynamics, manual calculations can be very complicated or even impossible. At this point, some professional pipeline simulation software can be used, such as Pipesim and Hysys. These software can automate complex pipe network simulations and produce detailed results. Regarding the design of the expansion tank, the principles for selecting its size and operating pressure generally depend on the requirements of the system. Generally, the design of a expansion tank requires consideration of the following factors: 1. The system’s maximum and minimum operating pressures: The expansion tank must be able to withstand the system’s maximum operating pressure, and it should also function properly at the system’s minimum operating pressure. 2. System volume: The size of the expansion tank should be sufficient to accommodate the volume changes that occur as a result of pressure variations in the system. 3. Temperature changes: Changes in the system’s temperature affect the density and pressure of the fluid, so these factors also need to be taken into account in the design. Furthermore, in practical implementation, other factors may also need to be considered, such as the system’s security, cost, and maintainability. .
Thank you for sharing. May I ask again if there is a specific formula for calculating the size of an expansion tank?
It is recommended to use this pipeline calculation software for calculations: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5713018&shareuid=4395011