FAQ

|Basic Pneumatic

When 5 L of compressed air is converted into atmospheric pressure at a pressure of 0.3 MPa G, what will the volume of atmospheric pressure be?

The relationship between volume and pressure, which varies with air compression (when the temperature is constant), is calculated using Boyle’s law in the following manner.
PV = constant
pressure of air before change x volume = pressure after change x volume = constant

That is, the pressure and volume are inversely proportional. The pressure in this case is considered in absolute pressure. The volume (5 L) is converted into atmospheric pressure at a pressure of 0.3 MPa G (gauge pressure) using the absolute pressure P and the volume V.
Formula: (0.3 + 0.1) x 5 = (0 + 0.1) x V
V (volume before change) = (0.3 + 0.1) x 5 ÷ 0.1 = 20 L (ANR)