Lenze DSD Manuel d'utilisateur télécharger pdf (Page 173)

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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23 173

7Applications

7.18 Pump

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7.18 Pump

Pumps have the task to move a medium with a specific density against a stationary pressure. The

power (P) that has to be applied hydraulically for this purpose can be calculated by means of the

flow rate (Q).

• The required data (efficiency, rated speed) of the pump can be gathered from the pump manu-

facturer's data sheet.

7.18.1 Calculations

For a pump according to the drawing the following applies:

[7-166] Equation 1: Power of the medium

• The factor 3600 results from the adaptation of the units.

Power of the pump

Via the efficiency of the pump the required power of the pump is calculated:

[7-167] Equation 2: Power of the pump

ρ gQh

opr

⋅⋅ ⋅

3600

---------------------------------- -

Pmp

-------------

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 495 496

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Lenze DSD Manuel d'utilisateur Page 173

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