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.
Thanks for the help! Here is some additional information. This is an 8" pipe, closed loop system with a centrifugal pump. At the end of the loop, there is a piece of process equipment that can not see more than 75 psi or it will shut down. With minor and friction losses, the equipment...
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...
