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  • Users: ThermalMan
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  1. ThermalMan

    Surface Area of a helical coil?

    I need the formula for calcuating the surface area of a helical coil. I have the pipe diameter, coil height, # of turns, and pitch, but can not seem to remember the formula used. Any help would be appreciated. Thanks.
  2. ThermalMan

    Fluid Pressure in Pipe

    I have 1,075 gpm of water flowing through an 8" pipe at a velocity of 7.05 ft/s and a pressure of 75 psi. I need to branch off that 8" line to divert enough flow to reduce the pressure from 75 psi to 65 psi. How do I calculate the amount of flow to divert to reduce the pressure in...

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