THe metering station in question is a high accuracy custody transfer system with a total measurement uncertainty budget of 1.0%. It is normal practice to insulate the straight pipe sections u/s and d/s of the orifice fitting but on this installtion no lagging has been fitted. The main challange...
I am trying to gauge the effect of not insulating a straight section of pipework upstream of an orifice meter. In particular I wish to determine the effect of ambient air on the flowing gas temperature. The pipeline is 24inch I/D with a 0.75inch wall thickness. Typical natural gas temperature is...
