Quality
Waterjet Newsletter – 07/17/2007
Determination
of Intensifier Pump Efficiency In a 1999 paper*, Herbig and Trieb described an
attempt to calculate the efficiency rate of an intensifier pump. They also
compared the calculations with experimental results. The efficiency rate of the pump was
calculated based on these three main components: the electrical motor, the
hydraulic system, and the double acting intensifier. The efficiency rate of
the electrical motor was estimated to be 0.9, referring to another
publication. The efficiency rate of the hydraulic system was calculated based
on two factors: volumetric and hydraulic-mechanical efficiency rates. The
volumetric efficiency rate reflects efficiency loss from leakages. The total
efficiency rate of the hydraulic system was calculated by: The efficiency rate of the
intensifier was calculated by: The calculated efficiency was
compared to experimental data as below.
The calculated efficiency is
always higher than the experimental data due to over-simplification. The
calculation did not consider the losses due to heat and leakage. The rated
load, instead of real load, was used in the calculation. The loss in the
orifice and compressibility of water were not considered either. * Herbig, N. & Trieb, F.
(1999) Calculation of the efficiency rate of high pressure pumps, in Mohamed
Hashish (ed.), Proceedings of the 10th American Waterjet Conference, August 14-17, Houston, Texas, Paper
38. |
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, where 
, where 1 & 2 - the two sides of intensifier)