Example 2-10 Gas Flow Through Sharp-edged Orifice

Example 2-10 Gas Flow Through Sharp-edged Orifice 

A 1 —Schedule 40 pipe is flowing methane at 40 psig and 50°F. The flange taps across the orifice (0.750 inch diameter) show a 3 pst pressure differential. Determine the flow rate through the orifice. 

Check assumed to verify turbulence if not in reasonable agreement, recalculate C and balance of solution, checking  

This is turbulent and satisfactory for the assumption. For helpful quick reference for discharge of air through an orifice, see Table 2-12B. 

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