Cv Calculator For Air. This calculator can be used to help select a valve with enough flow capacity for a given application. Online calculator, figures and tables showing how specific heat (cp and cv) of dry air vary with temperature at different pressures, si and imperial units sponsored links specific heat (c) is the amount of heat required to change the temperature of a mass unit of a substance by one degree.
Air velocity is measurement of the rate of displacement of air or gas at a specific location. Valve cv rating use this window to size a directional control valve for your application by identifying the coefficient of flow (cv) required to power the cylinder under the defined conditions. Reproduction, redistribution or modification of the information is prohibited without the express written permission of pneumatics online.
By multiplying air velocity by the cross section area of a duct, you can determine the air volume flowing past a.
To find necessary cv for a 55 scfm flow: Volume flow is usually measured in cubic feet per minute (cfm). Suppose a certain valve has a published cv factor of 3.75. If this valve is connected to a 125 psig air line, find the pressure loss through it when it is passing a flow of 243 scfm.