Comments about optimum line sizing

Following comments are based on preliminary tests of the above optimum line sizii% equations  

Line list is usually initiated by process er ineers. It provides a list of lines and line information in a unit, The most important information in line list for each line are line size, line number, line spec, insulation type and thickness, stress relief, fluid category, fluid phase, operating conditions (temperature, pressure), design conditions, upset conditions, fluid density. 

For single phase line, gravity flow line, or pressure drop of pipe fittings section III. 1,11L3, or III.5. A AC cl, c2 c3, c4 d dn D DP DPx f ff fm 

Moody or Darcy friction factor, dimenaonless. acceleration of gravity, 32.174 ft/sec2. mass flux, Ib/sec-ft2 see Eq. (4c). pressure head, ft see Eq. (29). 

Dukler constant slip two phase mixture Reynolds number, dimensionless see Eq. (I6n). 

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