Definition of Equivalent Roughness of Internal Surface of a Measuring Pipeline

Bohdan Chaban1 b.chaban.91 [at] gmail.com
Leonid Lesovoy2 techinfoflow [at] yahoo.co.uk
  1. Department of Automation of Heat and Chemical Processes, Lviv Polytechnic National University, Ukraine, Lviv, Ustyyanovycha street 5.
  2. Department of Automation of Heat and Chemical Processes, Lviv Polytechnic National University, Ukraine, Lviv, Ustyyanovycha street 5.
Abstract 

Literature on the methods for defining the equivalent roughness of the internal surface of a measuring pipeline was analyzed. The equation for calculating the hydraulic resistance coefficient of friction of natural gas on the internal surface of the measuring pipeline was developed. The equation for calculating the equivalent roughness of the internal surface of the measuring pipeline was obtained. This equation provides improvement of accuracy of  natural gas flow rate and volume measurement by means of the differential pressure method.

Keywords 
equivalent roughness
flow
natural gas
differential pressure method
standard orifice plate
hydraulic resistance coefficient of friction
References 

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