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  1. What is the cause of "Static Pressure" in flowing fluids? How do we ...

    Dec 16, 2019 · 1) Static pressure is the result of constraining a fluid, meaning a collection of particles, in a finite space. This will force the particles on a microscopic level to interact either in (elastic) …

  2. What is basically the difference between static pressure and dynamic ...

    Feb 17, 2015 · Dynamic pressure exists when there is bulk fluid motion creating a kinetic energy component. Along the streamline, and affected by the boundaries that contain the fluid flow, energy …

  3. Why is total pressure also called stagnation pressure when it is not ...

    Dec 10, 2022 · Why do you restrict the definition of total pressure to incompressible flows? Total pressure occurs in the conservation of energy (power balance) equation in the Navier Stokes …

  4. Building Static pressure - HVAC-Talk

    May 14, 2011 · I need to install a differential static pressure senser to control building static 1st part of my question, does the high pressure pitot tube go to the outside and low pressure pitot goes on the …

  5. VAV Static Pressure - HVAC-Talk

    Feb 19, 2011 · Keep in mind that VAV's are most accurate between around 30-80%. So if your static pressure is maintaining 1" but all of your VAV's are around 90-100% modulating, then you should …

  6. Maximum static pressure - HVAC-Talk

    Sep 3, 2005 · The maximum external static pressure is usually around .5" W.C. but varies between manufacturers. Since you are looking into furnaces that have V.S fans in them it will give you more …

  7. Acceptable stati pressure for return and supply - HVAC-Talk

    Nov 21, 2018 · A lower static pressure will mean improved performance for your equipment. High efficiency equipment alone does not provide home comfort and efficiency. HVAC2.0 is a process for …

  8. Stumped on calculating supply static pressure with...

    Jan 22, 2026 · Sum (add together) the static pressure of each duct off the plenum (let's call this "Sum Supply scenario) Use the duct with the highest static pressure as your supply static pressure (let's …

  9. Return Air and Static Questions - HVAC-Talk

    Feb 26, 2025 · First off, I would like to thank the group for responding to some of my previous topics I have. This post has more to do with return air design and how it affects the total static pressure. …

  10. Total and static pressure: which one is measured?

    Jul 19, 2017 · The dynamic pressure is the difference between the total pressure—that is, the pressure you would actually measure at the given point in the moving fluid, with some appropriate …