Introduction to common pump terms (4) – Pump like

kanawai
Ka hoʻohana ʻana i ka manaʻo like o ka pamu

1. Ke hoʻohana ʻia ke kānāwai like i ka pauma vane hoʻokahi e holo ana ma nā wikiwiki like ʻole, hiki ke loaʻa:
•Q1/Q2=n1/n2
•H1/H2=(n1/n2)2
•P1/P2=(n1/n2)3
•NPSH1/NPSH2=(n1/n2)2

Laʻana:

ʻO ka pauma i kēia manawa, ʻo SLW50-200B ke kumu hoʻohālike, pono mākou e hoʻololi iā SLW50-200B mai 50 Hz a i 60 Hz.
(mai 2960 rpm a i 3552 rpm)

Ma 50 Hz, he 165 mm ka impeller a me ke poʻo o 36 m.

H60Hz/H50Hz=(N60Hz/N50Hz)²=(3552/2960)2=(1.2)²=1.44
Ma 60 Hz, H60Hz = 36×1.44 = 51.84m.
I ka hōʻuluʻulu ʻana, pono ke poʻo o kēia ʻano pamu e hiki i 52m ma 60Hz wikiwiki.