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How do you calculate flow rate through a pipe when the velocity is known?
Flow rate is the volume of fluid per unit time flowing past a point through the area A. Here the shaded cylinder of fluid flows past point P in a uniform pipe in time t. The volume of the cylinder is Ad and the average velocity is ¯¯¯v=d/t v ¯ = d / t so that the flow rate is Q=Ad/t=A¯¯¯v Q = Ad / t = A v ¯ .
How to calculate exhaust?
In order to determine, exhaust gas flow rate in mass or volume, the formula for total mass of exhaust gas is ma (mass of air)+ mf (mass of fuel).
How can I increase my exhaust speed?
When your engine is at low RPM, the amount of exhaust gases leaving is low, so the velocity it exits the exhaust is low. You can increase this velocity by using a smaller pipe, but this will create a restriction for higher RPM.
What is the diameter of my exhaust pipe?
First, find the circumference of the pipe using a tailor’s measuring tape (or a piece of string you can then measure with a standard measuring tape or ruler). Then, divide the circumference by p (3.14) to get the outside diameter.
How much HP does a muffler delete add?
So for most cars, the muffler delete will not add any power. Some cars will gain some power, but generally it’s not much, usually under 5 horsepower. However, if you have a car modified for more power, and still has the stock mufflers, then you’ll have more gain.
How is the velocity of air captured from an exhaust outlet calculated?
This equation can only be used for exhaust outlets with relatively small diameters. For larger exhaust outlets equation (1) should be modified to Capturing air velocity in distance 250 mm from a 250 mm duct with internal air velocity of 3 m/s can be calculated as Note!
How to calculate exhaust pipe diameter and length?
A few formulas will aid you in determining the optimum pipe diameter and length. The engine needs to breathe, but the exhaust path needs to be matched to the engine’s operating speed (the RPM at which you want maximum torque and/or horsepower) and the engine’s VE.
How to calculate pipe sizing by velocity for air?
Air Piping Design Pipe Sizing by Pressure Loss Pipe Sizing by Velocity Pressure Loss through Piping Air Velocity through Piping Air Flow Rate through Piping Valves and Orifices Cv & Kvs Values Air Flow Rate through a Valve Air Flow Rate through an Orifice Condensate Load from Compressed Air
What’s the average speed of gas in an exhaust pipe?
That puts 160 miles per hour as the flow rate with the car stationary in neutral. It seems ridiculous to me. With full throttle and enough speed to create wind resistance to keep the engine just below 7,000 rpm, the pressure in the cylinders would surely be very very high, so how fast would the exhaust gases be moving then? 400 mph?