# Dont know how to word this properly, but a question on volume, flow, and psi.

• SwGts
In summary, the conversation discusses the possibility of calculating the CFM (cubic feet per minute) of a setup, specifically a small straight tube, based on the known volume and psi inside the tube. There is also a question about the possibility of keeping the same volume and psi while increasing the CFM. The conversation also mentions the use of an orifice plate for measuring flow rate.
SwGts
I don't know if this is the right section, and I am not entirely sure on how to word this- Hoepfully I can make this clear enough however:

If we know the volume of a setup, for a simple example let's just say a small straight tube. If we know the psi inside this tube, is it possible to calculate the CFM going through the tube to get that psi? Is it possible to Keep the same volume tube, retain the same Psi, and increase the cfm?

Hope I've made this clear enough.

If you know the pressure DROP along a tube (or across an opening) and you know the density and viscosity of the fluid you can get the (approximate) flow rate.
It's slightly different equation depending on the speed etc.

http://en.wikipedia.org/wiki/Orifice_plate

I would approach this question by first clarifying the terms being used. Volume refers to the amount of space occupied by a substance, while flow refers to the movement of that substance through a given space. PSI (pounds per square inch) is a unit of pressure, which is a measure of the force exerted by a substance on its surroundings.

Based on this understanding, it is not possible to directly calculate the CFM (cubic feet per minute) based on the volume and PSI of a setup. CFM is a measure of flow, while volume and PSI are independent variables that do not determine flow on their own. Other factors, such as the diameter and length of the tube, as well as the substance being flowed, also play a role in determining CFM.

However, it is possible to manipulate the other variables in order to increase CFM while keeping the volume and PSI constant. For example, increasing the pressure or decreasing the diameter of the tube can lead to a higher flow rate. This is known as the Bernoulli's principle, which states that as the speed of a fluid (such as air or water) increases, the pressure decreases.

In conclusion, while it is not possible to directly calculate CFM based on volume and PSI, it is possible to manipulate other variables in order to increase flow while keeping these variables constant. It is important to consider all relevant factors and principles when designing and analyzing a setup involving volume, flow, and pressure.

## 1. What is the difference between volume and flow?

Volume refers to the amount of space occupied by a substance, while flow is the rate at which a substance moves through a particular area. In other words, volume is a measure of quantity, while flow is a measure of rate.

## 2. How is volume measured?

Volume is typically measured in units such as liters, cubic meters, or gallons. It can be measured using various methods, including the displacement method, which involves submerging an object in a liquid and measuring the amount of liquid it displaces.

## 3. What is psi and how does it relate to volume and flow?

Psi (pounds per square inch) is a unit of pressure, which is a measure of force per unit area. It is commonly used to measure the pressure of gases and liquids. In terms of volume and flow, psi can affect the rate at which a substance flows through a particular area.

## 4. Can volume and flow be converted to each other?

Yes, volume and flow can be converted to each other using various conversion factors. For example, if you know the volume of a substance and its flow rate, you can calculate the time it will take for the substance to flow through a particular area.

## 5. How does temperature affect volume and flow?

Temperature can affect the volume and flow of a substance in several ways. Generally, an increase in temperature will cause a substance to expand and therefore increase its volume. This can also affect the flow rate as the particles move faster and take up more space. However, the specific effects of temperature on volume and flow will depend on the substance in question and its physical properties.

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