Hordhaca ereyada bamka caadiga ah (2) - hufnaanta + matoorka

xawaaraha awoodda
1. Awood wax ku ool ah:Sidoo kale loo yaqaan awoodda wax soo saarka.Waxa ay tilmaamaysaa tamarta uu helay
dareere ku qulqulaya bamka biyaha halbeeg ka soo baxa biyaha
bamka .

Pe=ρ GQH/1000 (KW)

ρ—— Cufnaanta dareeraha lagu keeno bamka (kg/m3)
γ——Miisaanka dareeraha lagu keeno bamka (N/m3)
Q—— Socodka bamka (m3/s)
H—— madaxa bamka (m)
g——Dardargelinta cufisjiidka (m/s2).

2.Waxqabad
Waxa loola jeedaa boqolkiiba saamiga awoodda wax ku oolka ah ee bamka ilaa awoodda shafka, oo uu muujiyay η.Suurtagal ma aha in dhammaan awoodda shafka lagu wareejiyo dareeraha, waxaana jira tamar lumis ku jirta bamka biyaha.Sidaa darteed, awoodda wax ku oolka ah ee bamka ayaa had iyo jeer ka yar awoodda shafka.Hufnaantu waxay calaamad u tahay heerka wax ku oolka ah ee beddelka tamarta ee bamka biyaha, waana tilmaame farsamo iyo dhaqaale oo muhiim ah ee bamka biyaha.

η = Pe/P×100%

3. Awoodda shaft
Sidoo kale loo yaqaan awoodda wax gelintaWaxa loola jeedaa awoodda uu ka helay shafka bamka ee mishiinka korontada, kaas oo uu tilmaamayo P.

Awoodda PShaft = Pe/η=ρgQH/1000/η (KW)

4. Awood isku mid ah
Waxa loola jeedaa awoodda mishiinka korontada ee ku habboon bamka biyaha, kaas oo uu matalo P.

P (Awoodda ku habboon)≥ (1.1-1.2) Awoodda PShaft

5.Xawaaraha wareegtada
Waxa loola jeedaa tirada kacaanka daqiiqaddii ee impeller ee bamka biyaha, kaas oo ay matalaan n.Ma halbeeggu waa r/min