To calculate the pounds per square inch (psi) from the compression ratio, one needs the compression ratio and the atmospheric pressure measurement. Then, the first number in the compression ratio is multiplied by the atmospheric pressure, then divided by the second number in the ratio.Continue Reading
For example, if the atmospheric pressure is 14.7 psi and the compression ratio is 11:1, the equation to solve for the psi is (14.7*11)/1. Therefore, the answer is 161.7 psi. People use this method of calculation to determine the pounds per square a piston produces.
The atmospheric pressure can vary, but the standard atmosphere produces 14.696 psi at sea level. For more exact calculations, the altitude should be considered.Learn more about Measurements
Millibars (mbar) and pounds per square inch (psi) are two units that measure pressure. They can be converted at a rate of 1 psi per 68.95 mbar, or 1 mbar per .0145 psi.Full Answer >
Air pressure is measured by using a barometer, the value of which is given in varying units, including inches of mercury (in Hg) or millimeters of mercury (mm Hg), torr (Tor), bar or millibars (mb), pounds per square inch (psi) and pascal (Pa). Standard atmosphere, which refers to the sea-level atmospheric pressure at 0 degree Celsius, is expressed in atmospheres, commonly abbreviated to atm. One atm is equal to 29.92 in Hg, 760 mm Hg, 760 Tor, 1.013 bar, 1,013.25 mb, 14.7 psi and 101,325 Pa.Full Answer >
Mild steel has a yield strength of 60,200 pounds per square inch (psi), a tensile strength of 78,300 psi, a modulus of elasticity of 29,000 psi, and a Poisson's ratio of 0.29.Full Answer >
PSI and PSIG are both units of measurement for describing the amount pressure a gas or fluid is exerting. However, PSIG specifies what the measurement is relative to, whereas PSI does not. In both units, the letters "psi" are an abbreviation for "pounds per square inch."Full Answer >