The O2 is flowing from where to where? Into or out of the ##25 in^3## volume? If into, what is the pressure available from the source?Nando said:Summary:: Flow rate calculation from a known volume. Time to fill the cylinder of 25 in^3 and max pressure
I am trying to calculate the flow rate of O2 from a known volume 25 in^3. The cylinder will fill up to a maximum pressure of 140 psi in 11.26 seconds. Any help to determine the flow rate will be appreciated. Do I use Bernoulli equation to find the flow rate?
berkeman said:The O2 is flowing from where to where? Into or out of the ##25 in^3## volume? If into, what is the pressure available from the source?
Nando said:The cylinder will fill up to a maximum pressure of 140 psi in 11.26 seconds.
Nando said:Pressure source is from a tank outside the building. Pressure on that tank is 150 psi.
Nando said:The tubing length is about 35 ft with an ID of 1/16”
Ok. Just found out that part of that line will be 1/4" ID on 20' length.berkeman said:So there is only a 10psi drop in flowing from the outside tank through all that tiny tubing and the final valve into the smaller tank? Or is there a booster pump involved? Have you tried this yet?
Yes. So is it as simple as applying Bernoulli principles? Can I also use Reynolds equation assuming the flow is turbulent?jrmichler said:You know the volume of the inside cylinder. You know the initial and final pressures in the inside cylinder. You know the filling time to four decimal places. That is sufficient information to calculate the average flow rate.
It will give you the average volumetric flow rate, but not the amount of mass of o2 in the second tank.inkblotch said:Is this not done simply by dividing the volume of the 25 inch3 by 11.26 seconds?
Fluid flow rate calculation is the process of determining the volume or mass of fluid that flows through a given point in a system per unit time. It is an important aspect of fluid mechanics and is used in various industries such as engineering, chemistry, and biology.
The most common way to calculate fluid flow rate is by using the equation Q = AV, where Q is the flow rate, A is the cross-sectional area of the pipe or channel, and V is the average velocity of the fluid. Other methods, such as using flow meters or Bernoulli's equation, can also be used depending on the specific situation.
There are several factors that can affect fluid flow rate, including the viscosity of the fluid, the diameter and length of the pipe or channel, the pressure difference between the two ends of the system, and the presence of obstacles or bends in the flow path.
Fluid flow rate calculations are used in a wide range of practical applications, such as designing and optimizing pipelines, determining the efficiency of pumps and turbines, monitoring and controlling flow in chemical processes, and measuring blood flow in the human body.
Some common units of measurement for fluid flow rate include gallons per minute (GPM), cubic meters per second (m3/s), liters per hour (L/h), and cubic feet per minute (CFM). The appropriate unit to use will depend on the specific system and industry being studied.