differential pressure method

Algorithm for Defining the Amount of Energy Transferred by Dry Saturated Steam

The algorithm for determining the amount of energy transferred by the dry saturated steam has been developed. The steam flow rate is measured by means of the differential pressure method with application of a standard long radius nozzle of a high-ratio type and a low-ratio type. The equations for determining the thermodynamic temperature of dry saturated steam when measuring its absolute pressure was applied together with the equations for determining the absolute pressure of dry saturated steam when measuring its thermodynamic temperature.

Measurement of Roughness of Internal Surface of Measuring Pipeline in Real Time for Standard Orifice Plates

Methods for measuring the roughness of the internal surface of a measuring pipeline for projected rectilinear sections of a measuring pipeline and for rectilinear sections that are in operation have been determined. The new equations for calculating the hydraulic resistance coefficient of friction of natural gas on the internal surface of the measuring pipeline, the average value of natural gas pressure along the section of a measuring pipeline and the equivalent roughness were obtained.