How do you calculate discharge from pressure?
So, the discharge pressure is equal to the suction pressure plus the pump’s design pressure. The discharge pressure of the pump should be approximately equivalent to the total dynamic head (TDH) required by the system (tanks, pipes, elbows, valves, flanges and fittings).
How do you find the diameter of a pipe from discharge?
The equation for pipe diameter is the square root of 4 times the flow rate divided by pi times velocity. For example, given a flow rate of 1,000 inches per second and a velocity of 40 cubic inches per second, the diameter would be the square root of 1000 times 4 divided by 3.14 times 40 or 5.64 inches.
How does the diameter of a pipe affect flow rate?
In a fluid passing through a pipe, a reduction in the diameter of the pipe can compress the flowing fluid. It flows faster, which increases the flow rate. And if the diameter increases, then the flow rate reduces.
How do you calculate water head?
Head pressure from hundreds of feet of depth behind a dam drives the mighty generators below. Divide the depth in inches by 27.71-inches/psi, or the depth in feet by 2.31-feet/psi which are the English unit conversion factors. The result is the water head pressure expressed in psi.
How do you calculate water flow through a pipe?
Measure each height from the center of the pipe. To find the initial water flow, solve for v_1. Subtract P_1 and p_g_y_1 from both sides, then divide by 0.5_p. T_ake the square root of both sides to obtain the equation v_1 = { [P_2 + 0.5p(v_2)^2 + pgy_2 – P_1 – pgy_1] ÷ (0.5p) }^0.5.
How do you calculate flow rate through a pipe?
The flow rate depends on the area of the pipe or channel that the liquid is moving through, and the velocity of the liquid. If the liquid is flowing through a pipe, the area is A = πr 2, where r is the radius of the pipe. For a rectangle, the area is A = wh where w is the width, and h is the height.
How do you calculate stream discharge?
The discharge of a stream is the product of its velocity (V – length of travel per unit of time such as feet/second) times depth of the water (D – unit of length) times width (W of the water – units of length). (Make sure all all three lengths are expressed in the same unit.) Discharge = V x D x W
What is maximum flow through a pipe?
For normal liquid service applications, the acceptable velocity in pipes is 2.1 ± 0.9 m/s (7 ± 3 ft/s) with a maximum velocity limited to 2.1 m/s (7 ft/s) at piping discharge points including pump suction lines and drains.