-A pneumatic conveying calculation based on a constant solid resistance factor (K) as commonly used, results in a straight ascending capacity versus pressure line.
-A pneumatic conveying calculation based on a calculated solid resistance factor (K=function (*SLR^, Re), results in a curved ascending line with a lower capacity/pressure gradient at higher pressures.
-The usually used “constant” solid resistance factor calculation results in:
oToo low calculated capacities at lower pressures
oToo high calculated capacities at higher pressures.
-The “constant” solid resistance factor calculation is only valid for a specific SLR and Reynold factor (like a broken clock that gives the time correctly one or two times a day)
-As this specific SLR and Reynold factor are not known, the pneumatic conveying calculation results based on a constant solid resistance factor (K) is to be treated with great caution and should be not trusted for a design. ■
Difference in calculation results between fixed solid resistance factor and calculate
-A pneumatic conveying calculation based on a constant solid resistance factor (K) as commonly used, results in a straight ascending capacity versus pressure line.
-A pneumatic conveying calculation based on a calculated solid resistance factor (K=function (*SLR^, Re), results in a curved ascending line with a lower capacity/pressure gradient at higher pressures.
-The usually used “constant” solid resistance factor calculation results in:
oToo low calculated capacities at lower pressures
oToo high calculated capacities at higher pressures.
-The “constant” solid resistance factor calculation is only valid for a specific SLR and Reynold factor (like a broken clock that gives the time correctly one or two times a day)
-As this specific SLR and Reynold factor are not known, the pneumatic conveying calculation results based on a constant solid resistance factor (K) is to be treated with great caution and should be not trusted for a design. ■
Teus