He kupu whakataki ki nga kupu papu noa (4) – He rite te papu

ture
Te tono o te ariā rite o te papu

1. I te wa e pa ana te ture rite ki te papu vane kotahi e rere ana i nga tere rereke, ka taea te whiwhi:
•Q1/Q2=n1/n2
•H1/H2=(n1/n2)2
•P1/P2=(n1/n2)3
•NPSH1/NPSH2=(n1/n2)2

Tauira:

He papu, ko te tauira ko SLW50-200B, me whakarereke SLW50-200B mai i te 50 Hz ki te 60 Hz.
(mai i te 2960 rpm ki te 3552 rpm)

I te 50 Hz, ko te impeller he diameter o waho o 165 mm me te upoko o te 36 m.

H60Hz/H50Hz=(N60Hz/N50Hz)²=(3552/2960)2=(1.2)²=1.44
I te 60 Hz, H60Hz = 36×1.44 = 51.84m.
Hei whakarapopototanga, me eke te upoko o tenei momo papu ki te 52m i te tere 60Hz.