Peb theem ntawm cov txheej txheem ziab ntawm cov khoom siv tshuab ziab khaub ncaws

Peb theem ntawm cov txheej txheem ziab ntawm cov khoom siv tshuab ziab khaub ncaws Kev ziab ntawm cov ntaub ntawv los ntawm lub tshuab ziab khaub ncaws tsis ua tiav thaum hmo ntuj, thiab yuav tsum muaj peb theem: kom ceev kom qhuav, ua kom tsis zoo, thiab txo qis kom qhuav. Thaum siv lub tshuab ziab khaub ncaws, koj yuav tsum nkag siab tag nrho cov txheej txheem ziab ntawm cov cuab yeej, kom cov kev hloov kho tuaj yeem ua tau raws sijhawm kom ntseeg tau tias qhov ziab kom zoo tshaj plaws. Hnub no, Hongtu yuav qhia txog peb theem ntawm kev ziab ntawm lub tshuab ziab khaub ncaws kom ntxaws. 1, Lub tshuab ziab khaub ncaws nrawm: Thaum cov khoom nkag mus rau hauv lub tog raj kheej tom qab pub mis, thiab tuaj rau hauv kev sib cuag nrog cov xov xwm kub kub kom qhuav, lub zog thermal hloov mus rau cov khoom nto, ua rau qhov kub thiab txias tsis tu ncua, thiab cov dej pib evaporate. Ua ntej, ib txheej ntawm cov yeeb yaj kiab dej yog tsim rau ntawm qhov chaw ntawm cov khoom siv, uas yog nquag ua raws. Yog tias kev sib tsoo thiab kev sib txhuam ntawm cov ntaub ntawv tau nce ntau li ntau tau, qhov tshwm sim no tuaj yeem zam tau. Raws li qhov ziab kom qhuav nce sai, cov khoom nkag mus rau theem thib ob kom qhuav. 2, Uniform drying stage: Thaum lub sij hawm no theem ntawm ziab, qhov kub ntawm cov khoom yuav tsis nce, tab sis maj mam mus rau ib tug equilibrium, uas yog, lub uniform drying theem ntawm cov khoom. Cov theem no yog ib theem tseem ceeb rau kev tshem tawm cov dej noo ntawm cov khoom. Nyob rau lub sijhawm no, vim muaj cov ntsiab lus ntawm cov dej siab hauv cov khoom, cov khoom siv hauv cov dej noo yog yooj yim diffused rau saum npoo, thiab qhov diffusion ceev tau hloov mus rau qhov vaporization ceev ntawm cov av noo. Yog li ntawd, cov khoom nto yog ib txwm khaws cia noo. Qhov ceev ceev kom qhuav theem feem ntau tshem tawm cov dej tsis muaj tshuaj lom neeg los ntawm cov khoom siv, ua rau me me ntawm cov khoom siv. Thaum lub sij hawm ziab ntawm cov ntaub ntawv, nce tus nqi ziab yuav ua kom lub sij hawm ziab kom luv kom ua tiav lub hom phiaj ntawm kev tsim khoom ntau ntxiv. Hauv kev teb rau cov xwm txheej no, thaum teeb tsa Letpting cov cuab yeej, kev ntsuas thiab ntau qhov kev sib tshuam rov qab, thiab ntau qhov kev sib tshuam rov qab los ua kom muaj zog ntxiv rau lub luag haujlwm ntawm theem no. Nyob rau tib lub sijhawm, ua kom tsim nyog hloov kho rau cov txheej txheem cuam tshuam. Ua kom tau raws li cov yam ntxwv ntawm kev siv cov evaporation siab thiab ceev ceev ntawm cov dej molecules. 3, Kev ua kom qhuav qeeb qeeb: Thaum cov dej hauv cov khoom nce mus txog qhov txwv, cov dej ntws tawm ntawm lub cev mus rau saum npoo ntawm cov khoom yuav maj mam txo thiab maj mam nce mus txog qhov sib npaug. Lub luag haujlwm ntawm theem no yog los txhawb kev tshaj lij ntawm cov dej saum npoo av, txuas ntxiv ua kom sov rau saum npoo ntawm cov khoom, pub tshav kub txuas mus rau sab hauv. Cov vaporized thiab vaporized feem txav ntawm qhov chaw mus rau sab hauv. Tom qab cov dej vaporizes rau hauv dej vapor sab hauv, lub porosity nyob rau hauv cov khoom nce, thiab cov dej sai sai txav mus rau saum npoo thiab khiav. Raws li qhov kub ntawm cov khoom nce, cov dej seem sab hauv yuav evaporate. Qhov ceev txo kom qhuav theem yog tsuas yog siv los tshem tawm cov absorbed noo noo los ntawm cov khoom. Cov theem no yog ib feem tseem ceeb ntawm kev ua kom qhuav zoo thiab txhim kho tus nqi kom qhuav. Kev npaj ntawm ntu no ntawm cov cuab yeej nqa nqa tau txais cov txheej txheem nqa tsis tau hla ib leeg thiab tsim nyog nthuav dav thaj tsam ntawm qee qhov "cua tunnels", qhia txog qhov xav tau kom muaj qhov chaw txaus txaus, ruaj khov thiab ua kom qhov kub thiab txias uas yuav tsum tau ua rau evaporation ntawm cov dej, thiab muab cov kev xav tau kom muaj qhov chaw txaus txaus, ruaj khov thiab ua kom qhov kub thiab txias yuav tsum tau ua kom cov dej ntws tawm. txheeb ze ceev thiab qhov tsis zoo siab ib puag ncig tsim nyog los ua kom nrawm nrawm ntawm cov dej molecules. Ib qho tshiab ua ke lifting ntaus ntawv tsim los ntawm kev simulation ntawm cov khoom siv tshuab ziab khaub ncaws tag nrho qhia txog kev sib cuam tshuam ntawm ntau yam txheej txheem tsis ua thaum lub sij hawm ziab cov khoom.