Chiyambi cha mawu ofala a pampu (2) - magwiridwe antchito + mota

liwiro la mphamvu
1. Mphamvu Yogwira Ntchito:Amadziwikanso kuti mphamvu yotulutsa. Amatanthauza mphamvu yomwe imapezedwa ndi
madzi oyenda kudzera mu pampu yamadzi mu unit time kuchokera m'madzi
pompa.

Pe=ρ GQH/1000 (KW)

ρ——Kuchuluka kwa madzi operekedwa ndi pampu (kg/m3)
γ——Kulemera kwa madzi operekedwa ndi pampu (N/m3)
Q——Kuyenda kwa pampu (m3/s)
H——Pampu mutu （m)
g——Kufulumizitsa mphamvu yokoka (m/s2).

2. Kuchita bwino
Amatanthauza kuchuluka kwa chiŵerengero cha mphamvu yogwira ntchito ya pampu ku mphamvu ya shaft, yofotokozedwa ndi η. N'zosatheka kuti mphamvu zonse za shaft zisamutsidwire kumadzimadzi, ndipo pamakhala kutayika kwa mphamvu mu pampu yamadzi. Chifukwa chake, mphamvu yogwira ntchito ya pampu nthawi zonse imakhala yocheperapo kuposa mphamvu ya shaft. Kuchita bwino kumasonyeza kuchuluka kwa mphamvu yogwira ntchito ya pampu yamadzi, ndipo ndi chizindikiro chofunikira chaukadaulo komanso chachuma cha pampu yamadzi.

η =Pe/P×100%

3. Mphamvu ya kutsinde
Amadziwikanso kuti mphamvu yolowera. Amatanthauza mphamvu yomwe imapezedwa ndi shaft ya pampu kuchokera ku makina amagetsi, yomwe imawonetsedwa ndi P.

PShaft mphamvu =Pe/η=ρgQH/1000/η (KW)

4. Mphamvu yofananira
Amatanthauza mphamvu ya makina oyendera magetsi omwe amagwirizana ndi pampu yamadzi, yomwe imayimiridwa ndi P.

P (Mphamvu Yofananira) ≥ (1.1-1.2) Mphamvu ya PSaft

5. Liwiro Lozungulira
Amatanthauza kuchuluka kwa ma revolutions pamphindi imodzi ya impeller ya pampu yamadzi, yomwe imayimiridwa ndi n. Ndi unit r/min.