Hauv kev lag luam cua sov, stainless hlau cartridge tso cua sov yog qhov tseem ceeb, thiab qhov zoo ntawm lawv cov kev teeb tsa muaj kev cuam tshuam loj rau kev ua kom sov, ua kom ntev, thiab kev nyab xeeb. Qhov kev ncua deb tsawg kawg ntawm lub rhaub thiab lub thawv ntim phab ntsa yog qhov tseem ceeb ntawm kev teeb tsa. Ntxiv nrog rau kev ua kom muaj cua sov zoo ib yam, qhov sib txawv tsim nyog kuj tseem txo qis hauv cheeb tsam overheating, ua kom cov cuab yeej siv tau ntev, thiab txhim kho kev siv hluav taws xob. Cov lus qhia rau kev txiav txim siab qhov kev ncua deb, qhov tseem ceeb ntawm qhov sib txawv, thiab cov txheej txheem kev suav rau stainless hlau cartridge rhaub yog tag nrho cov hauv kab lus no.
Cov ntsiab lus tseem ceeb ntawm thermodynamics thiab kev lag luam kev coj ua yog lub hauv paus rau kev txiav txim siab qhov tsawg kawg nkaus. Qhov kev sib cais yam tsawg kawg nkaus rau kev teeb tsa kab rov tav yuav tsum yog 1.5 mus rau 2 npaug ntawm txoj kab uas hla ntawm lub rhaub. Qhov no tuaj yeem txo qis rau 1 mus rau 1.5 npaug ntawm txoj kab uas hla hauv kev teeb tsa ntsug. Nce qhov kev ncua deb ntawm 20-30% rau cov xov xwm uas muaj viscosity siab los yog nquag fouling. Cov cua sov uas tsim los ntawm lub rhaub yog thauj mus rau qhov nruab nrab ib puag ncig los ntawm ntuj convection thiab conduction, uas yog lub hauv paus ntawm cov cai no. Ib qho "thermal barrier" yuav tshwm sim los ntawm qhov sib txawv tsis txaus uas cuam tshuam qhov txav ntawm huab cua kub lossis nruab nrab. Qhov no ua rau muaj qhov kub thiab txias ntawm lub thawv ntim phab ntsa, uas tuaj yeem ua rau thermal stress los yog cov khoom deformation.Ntxiv mus, qhov nruab nrab yuav raug undergo localized superheating, uas yuav cuam tshuam cov khoom zoo los yog tam sim no muaj kev ruaj ntseg txaus ntshai, thiab lub rhaub dej yuav overheat, txo nws cov lifespan.
Qhov kev ncua deb yog cuam tshuam los ntawm ntau yam tseem ceeb. Ua ntej thiab qhov tseem ceeb, lub zog ceev (W / cm2) ntawm lub rhaub yog qhov tseem ceeb. Rau qhov ntom ntom qis dua 5 W / cm2, qhov sib txawv tuaj yeem yog 1 txog 1.5 npaug ntawm txoj kab uas hla; rau nruab nrab concentrations ntawm 5 thiab 10 W / cm2, nws yuav tsum yog 1.5 mus rau 2 zaug; thiab rau siab ceev tshaj 10 W/cm2, nws yuav tsum yog 2-3 zaug. Tsis tas li ntawd, cov khoom nruab nrab yog qhov tseem ceeb. Thaum cov roj thiab siab -cov kua viscosity xav tau 20-30% nce, dej thiab qis- cov kua dej viscosity nrog cov thermal conductivity zoo tso cai rau qhov sib txawv me me. Gaseous media xav tau qhov khoob uas dav dua li 1.5 npaug ntawm cov kua dej vim tias lawv cov convection tsis zoo, thiab fouling - cov ntaub ntawv yooj yim yuav tsum tau muaj qhov sib txawv loj dua kom tsis txhob muaj qhov kub hnyiab.Cov qauv thiab cov khoom ntawm lub thawv kuj tseem ceeb: tsis yog- cov thawv hlau xav tau 10-20% nce nyob rau hauv qhov sib txawv, whereas me me conductivity. Thaum tshav kub kub ntws hauv cov thawv ntim khoom yuav tsum tau muab coj los xav. Kev khiav hauj lwm kub yog qhov tseem ceeb; Qhov kub qis tso cai txo qis, qhov kub siab tshaj 150℃yuav tsum muaj qhov sib txawv ntawm 15-25%. Qhov kawg ntawm qhov cuam tshuam rau qhov no yog kev npaj lub rhaub dej kub: ib lub tshuab cua sov ua raws li cov lus qhia tseem ceeb, ntau lub tshuab cua sov thaum uas tig mus xav tau qhov sib piv ntawm cov raj sib txuas, thiab cov staggered layouts tuaj yeem txo qhov sib txawv ntawm kwv yees li 10%.
Theoretical txoj kev raws li conduction thiab convection hloov tshav kub yog siv los xam qhov tsawg kawg nkaus nyob deb. Qhov sib txawv d tuaj yeem sau ua d=(q / (2πλΔT)) ^ (1/2) × K, qhov twg q yog qhov kub ntawm ib chav tsev ntev (W / m), λ yog qhov thermal conductivity ntawm qhov nruab nrab (W / (m·K)), ΔT yog qhov tso cai kub qhov sib txawv (K), thiab K yog qhov muaj kev nyab xeeb (feem ntau 1.5). Ib qho yooj yim empirical mis rau cov kua cua sov yog d_min=C × (P / L) ^ 0.4, qhov twg P yog lub rhaub fais fab (W), L yog qhov ntev (m), thiab C yog nruab nrab coefficient (0.8 rau dej, 1.1 rau roj, thiab 1.4 rau roj). Computational fluid dynamics (CFD) simulations raug pom zoo rau cov ntawv thov tseem ceeb lossis tshwj xeeb kom paub meej txog kev teeb tsa, muab kev pom kev pom rau hauv qhov kub thiab txias.
Ib qho tswv yim qhia txog kev teeb tsa yog muab tso tseg 10-15% ntau qhov chaw rau kev hloov pauv ntau dua li qhov tau suav. Txhawm rau tiv thaiv kev sib cuag hauv siab - qhov kub thiab txias, siv thermal expansion rau hauv kev txiav txim siab. Txhawm rau txo cov thermal txuas, siv cov hlua txuas uas ua los ntawm cov khoom siv hluav taws xob tsawg -. Txheeb xyuas qhov deb tiag tiag rau kev hloov pauv tsis tu ncua tom qab txheej txheem. Txhawm rau khaws qhov muag ntawm kev faib khoom, tso cov ntsuas kub ntawm qhov chaw xaiv tsa.
Qhov tsis txaus ntseeg uas ua rau muaj kev kub ntxhov hauv cheeb tsam, raws li qhia los ntawm hotspots lossis discoloration ntawm phab ntsa, yog cov teeb meem tshwm sim uas tuaj yeem kho tau los ntawm kev txwv kev ua ub no, txav mus, thiab nthuav qhov kev ncua deb ntawm 20-30%. Optimizing setups thiab ntxiv cov twj tso kua mis los yog stirrers tuaj yeem pab daws qhov teeb meem tsis zoo hauv nruab nrab, uas ua rau muaj qhov kub thiab txias tsis sib haum thiab ua haujlwm tsis zoo. Cov kub ntau dhau uas ua rau lub tshuab cua sov ua kom luv luv yuav tsum tau kuaj xyuas cov haujlwm, nthuav dav, lossis txo qis zog.
Hauv cov ntsiab lus, kev txiav txim siab qhov tsawg kawg nkaus sib cais ntawm stainless hlau cartridge tso cua sov thiab cov thawv ntim cov phab ntsa yog ib qho teeb meem nyuaj uas yuav tsum tau coj mus rau hauv tus account ntau qhov sib txawv. Qhov sib txawv tsim nyog lav kev nyab xeeb, nce qhov sib xws thiab ua haujlwm tau zoo, thiab ua kom lub neej ntev. Txhawm rau tsim cov tswv yim zoo tshaj plaws hauv kev xyaum, koom ua ke theoretical xam, cov ntaub ntawv pom, thiab qhov chaw- kev siv tau tshwj xeeb. Cov kws tshaj lij thermal engineers yuav tsum tau sab laj rau cov ncauj lus kom ntxaws tsim thiab tshuaj xyuas rau cov hom phiaj tshwj xeeb lossis tseem ceeb.
