Hordhac ku saabsan ereyada caadiga ah ee bamka (4) - Isku ekaanshaha bamka

sharciga
Adeegsiga aragtida isku midka ah ee bamka

1. Marka sharciga la midka ah lagu dabaqo isla bamka vane-ka ee ku shaqeeya xawaare kala duwan, waxaa la heli karaa:
•Q1/Q2=n1/n2
•H1/H2=(n1/n2)2
•P1/P2=(n1/n2)3
•NPSH1/NPSH2=(n1/n2)2

Tusaale:

Marka laga reebo bamka jira, moodelku waa SLW50-200B, waxaan u baahanahay inaan SLW50-200B ka beddelno 50 Hz ilaa 60 Hz.
(laga bilaabo 2960 rpm ilaa 3552 rpm)

Xawaaraha 50 Hz, impeller-ku wuxuu leeyahay dhexroor dibadda ah oo ah 165 mm iyo madaxiisuna yahay 36 mitir.

H60Hz/H50Hz=(N60Hz/N50Hz)²=(3552/2960)2=(1.2)²=1.44
Marka la gaaro 60 Hz, H60Hz = 36×1.44 = 51.84m.
Marka la soo koobo, madaxa noocan ah ee bamka waa inuu gaaraa 52m xawaare 60Hz ah.