Cov txheej txheem:
Video: Yuav ua li cas koj xam Venturi flow rate?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Venturi Flow Equation thiab Tshuab xam zauv
- thiab.
- Yog li ntawd:
- thiab.
- Qpawg = ρ · Q. Qhov twg: Q = volumetric tus nqi ntws (m3/s, ib3/s) Qpawg = Mass flowrate (kg/s, lbs/s) A1 luas = Π · r2 (mm2, hauv2) A2 luas = Π · r2 (mm2, hauv2) r1 = Radius inlet ntawm A1 (mm, hauv) r2 = Radius inlet ntawm A2 (mm, ib.) p1 = Ntsuas siab (Pa, lb/in2) p2 = Ntsuas siab (Pa, lb/in2)
Ib yam li ntawd, venturi ntsuas dej ntws li cas?
Lub hauv paus ntsiab lus tom qab kev ua haujlwm ntawm lub Ventur flowmeter yog Bernoulli nyhuv. Cov Ventur ntsuas cov kua dej ntws los ntawm kev txo cov ntu ntu ntws thaj chaw hauv ntws txoj kev thiab tsim kom muaj qhov sib txawv siab. Cov kua tam sim no nkag mus rau hauv caj pas Ventur nrog thaj chaw tshiab A2, uas yog me dua A1.
Tsis tas li ntawd, cov nyhuv venturi yog dab tsi thiab nws ua haujlwm li cas? Cov Cov nyhuv venturi yog qhov txo qis hauv cov kua siab uas tshwm sim thaum cov kua ntws los ntawm ib qho kev txwv (los yog choke) ntawm cov yeeb nkab. Cov Cov nyhuv venturi Nws muaj npe tom qab nws tus neeg nrhiav pom, Giovanni Battista Ventur.
Hais txog qhov no, koj yuav ua li cas xam tus nqi ntawm lub nozzle?
Ua haujlwm tawm tus nqi ntws dej los ntawm a nozzle peb yuav tsum ua kom tiav qhov ntim hauv ib lub sijhawm. Txhawm rau ua qhov no peb ua haujlwm tawm thaj tsam ntawm lub nozzle thiab ces muab nws los ntawm tus ceev ntawm cov dej los ntawm lub nozzle muab peb ntim rau ib chav tsev ntawm lub sijhawm.
Koj ntsuas dej ntws li cas?
Ntws tej zaum ntsuas los ntawm ntsuas qhov nrawm ntawm cov kua dej hla ib cheeb tsam paub. Rau loj heev ntws , cov txheej txheem tracer tuaj yeem siv los txiav txim siab ntws tus nqi los ntawm kev hloov hauv concentration ntawm dye lossis radioisotope.
Pom zoo:
Yuav ua li cas koj xam tus qauv sib txawv ntawm PMP?
Cov mis siv nyob rau hauv PMBOK rau tus qauv sib txawv yog yooj yim. Nws tsuas yog (P-O) / 6. Qhov ntawd yog qhov pessimistic kev ua ub no kwv yees rho tawm qhov kev kwv yees qhov kev xav tau muab faib los ntawm rau. Qhov teeb meem yog qhov no nyob rau hauv tsis muaj txoj kev zoo los yog daim ntawv tsim ib qho kev ntsuas ntawm tus qauv deviation
LPM flow rate yog dab tsi?
Tus nqi: 1 Litre ib feeb (L / min) ntawm flowrate. Sib npaug: 0.000017 cubic meters ib ob (m3 / sec) inflow tus nqi. Hloov ua lwm yam liter per feeb rau cubic meters persecond tus nqi nyob rau hauv tus nqi ntws units scale
Ntev npaum li cas yuav tsum tau kuaj xyuas qhov ntsug laminar flow hood?
Cov ris tsho siv los npaj cov tshuaj kho mob qog noj ntshav yuav tsum kaw: Hauv qab. Ntev npaum li cas yuav tsum tau kuaj xyuas lub laminar flow hood? Txhua 6 lub hlis
Yuav ua li cas koj xam lub sij hawm nws yuav siv sij hawm mus ncig teb chaws?
Kwv yees seb koj yuav mus sai npaum li cas ntawm koj qhov kev mus ncig. Tom qab ntawd, faib koj qhov kev ncua deb ntawm koj qhov nrawm. Qhov no yuav muab rau koj anestimation ntawm koj lub sijhawm mus ncig. Piv txwv li, yog tias koj mus ncig yog 240 mais thiab koj yuav tsav 40 mais ib teev, koj lub sijhawm yuav yog 240/40 = 6hours
Yuav ua li cas koj xam lub sij hawm nws yuav siv ib yam khoom los poob?
Ntsuas qhov deb ntawm qhov khoom yuav poob hauv ko taw nrog tus pas ntsuas lossis ntsuas daim kab xev. Faib qhov kev ncua deb los ntawm 16. Piv txwv li, yog tias cov khoom yuav poob 128 ko taw, faib 128 los ntawm 16 kom tau 8. Xam cov square root ntawm cov kauj ruam 2 los nrhiav lub sij hawm nws yuav siv cov khoom poob hauv vib nas this