Yuav ua li cas los txhim kho lub tshav kub hloov coefficient ntawm lub raj ntim tshuab ziab khaub ncaws?

1. Ua kom zoo rau lub raj ntim cov qauv
Xaiv cov khoom siv lub raj ntim khoom tsim nyog: Nws yog qhov zoo dua los siv cov ntaub ntawv nrog cov thermal conductivity zoo los ua cov hlua khi, xws li tooj liab alloy lossis stainless hlau uas muaj thermal conductivity. Copper alloy muaj cov thermal conductivity siab. Piv txwv li, cov thermal conductivity ntawm tooj liab yog hais txog 380-400W / (m・K), uas tuaj yeem hloov cov cua sov zoo dua li cov hlau tsis zoo tib yam (thermal conductivity yog li 16-20W / (m・K) ). Txawm li cas los xij, hauv kev siv tswv yim, nws tseem yuav tsum xav txog tus nqi, kev tiv thaiv corrosion thiab lwm yam ntawm cov khoom siv rau kev xaiv dav.
Kho qhov luaj li cas thiab kev npaj ntawm lub raj ntim: Tsim nyog txo txoj kab uas hla ntawm lub raj ntim tuaj yeem ua rau cov cua sov hloov mus rau ib chav tsev ntim. Piv txwv li, txo lub raj txoj kab uas hla ntawm 50mm mus rau 30mm yuav ua rau kom lub tshav kub hloov chaw nyob rau hauv tib lub raj ntim ntim. Nyob rau tib lub sijhawm, kev teeb tsa ntawm lub hnab ntim lub raj kuj tseem cuam tshuam rau kev hloov pauv ntawm cov cua sov. Kev siv cov duab peb sab tsis tu ncua tuaj yeem npaj ntau lub raj ntim hauv tib qhov chaw tshaj li qhov kev npaj square, uas ua rau kom qhov chaw hloov mus rau cov cua sov, tab sis kev saib xyuas yuav tsum tau them rau qhov tsim nyog ntawm cov khoom ntws channel kom paub meej tias cov khoom tuaj yeem ntws ncaj qha ntawm lub raj bundles thiab tag nrho hu rau lub raj bundles.
Tube bundle nto kev kho mob: Kev kho tshwj xeeb ntawm lub raj pob saum npoo tuaj yeem txhim kho cov nyhuv hloov tshav kub. Piv txwv li, kev siv cov txheej txheem micro-nano txheej tsub kom qhov roughness ntawm lub raj ntim qhov chaw, ua kom lub sijhawm nyob ntawm cov khoom ntawm lub raj ntim qhov chaw, thiab ntxiv dag zog rau cov txheej txheem cua sov. Los yog chemical plating, electroplating thiab lwm txoj kev yog siv los ua ib zaj duab xis nrog thermal conductivity zoo dua nyob rau saum npoo ntawm lub raj ntim los txhim kho cov thermal conductivity ntawm lub raj ntim.
2. Txhim kho cov khoom siv thiab cov dej ntws
Pretreatment ntawm cov ntaub ntawv: Pretreatment ntawm cov ntaub ntawv, xws li crushing, tshuaj ntsuam thiab lwm yam kev khiav hauj lwm, kom cov khoom particle loj uniform thiab nruab nrab. Rau cov ntaub ntawv loj, qhov tsim nyog crushing tuaj yeem nqa tau los ua kom thaj chaw sib cuag ntawm cov khoom siv thiab lub raj ntim; rau cov ntaub ntawv powdery, granulation thiab lwm txoj hauv kev yog siv los tsim cov khoom ntawm qhov loj me kom tsis txhob muaj cov ntaub ntawv powdery thiab cuam tshuam rau kev hloov hluav taws xob. Piv txwv li, thaum ziab tej yam tshuaj raw khoom, ua rau cov khoom raw hmoov rau hauv cov khoom uas muaj ib txoj kab uas hla ntawm 3-5mm tuaj yeem txhim kho qhov kev sib cuag ntawm cov khoom thiab lub raj ntim.
Txhim kho txoj kev tig thiab kev sib xyaw ntawm cov khoom siv: Kev sib haum xeeb tsim lub lifting phaj los yog nplawm cov cuab yeej hauv lub tshuab ziab khaub ncaws kom cov khoom tuaj yeem tig tag nrho thaum lub sij hawm ziab. Cov duab, lub kaum sab xis thiab tus naj npawb ntawm lub lifting phaj yuav tsum tau optimized raws li cov yam ntxwv ntawm cov khoom. Piv txwv li, kev siv cov hlua nqa cov ntawv tuaj yeem coj cov khoom siv los ua ib txoj hauv kev sib tw hauv lub tog raj kheej, kom lub sijhawm nyob ntawm cov khoom hauv lub tshuab ziab khaub ncaws ntev, thiab nws tuaj yeem xyuas kom meej tias cov khoom tuaj yeem tiv tauj txhua qhov chaw ntawm lub tshuab ziab khaub ncaws. lub raj ntim, yog li txhim kho cov cua sov hloov coefficient. Tsis tas li ntawd, qhov tsim nyog nce kev sib hloov ceev ntawm lub raj ntim kuj tuaj yeem txhim kho cov nyhuv tig ntawm cov khoom siv, tab sis yuav tsum tau ceev faj kom tsis txhob muaj qhov nrawm nrawm uas ua rau cov khoom tawg lossis cov khoom siv ntxiv.
3. Ua kom zoo rau kev ua haujlwm
Tswj qhov tsis sib xws ntawm qhov nruab nrab kub: Ua kom qhov kub thiab txias ntawm qhov nruab nrab ntawm cov cua sov tuaj yeem txhim kho cov nyhuv ntawm cov cua sov. Nyob rau hauv qhov kev tso cai los ntawm cov cuab yeej siv, tsim nyog nce qhov kub ntawm qhov nruab nrab kub (xws li chav lossis cov roj hloov hluav taws xob) kom nce qhov kub ntawm qhov sib txawv ntawm cov cua sov nruab nrab thiab cov khoom siv, yog li ua kom lub zog hloov hluav taws xob. Nyob rau tib lub sijhawm, kev kho tus nqi txaus ntawm cov cua sov nruab nrab thiab txiav txim siab qhov zoo tshaj plaws ntws los ntawm kev sim lossis simulation suav tsis tuaj yeem tsuas yog ua kom muaj cua sov txaus, tab sis kuj tsis txhob siv hluav taws xob pov tseg thiab khoom puas tsuaj. Piv txwv li, rau cov cua kub nruab nrab, thaum lub siab nce ntawm 0.8MPa mus rau 1.2MPa (raws li qhov kub thiab txias nce), qhov kub hloov coefficient yuav nce ntxiv thaum lwm yam kev mob tseem tsis hloov; thiab tswj cov pa ntws ntawm ib ncig ntawm 10-15m / s tuaj yeem ua tiav cov txiaj ntsig kev hloov pauv cua sov zoo dua.
Kev tuav lub tshuab nqus tsev kawm ntawv ntawm cov khoom siv (yog tias tsim nyog): Kev ua haujlwm ntawm lub raj ntim tshuab ziab khaub ncaws nyob rau hauv qhov tsis zoo siab tuaj yeem txo qhov kub ntawm cov dej, ua rau nws yooj yim dua rau cov dej hauv cov khoom kom evaporate, thiab kuj yog qhov zoo rau cov cua sov hloov. Kev tswj xyuas lub tshuab nqus tsev nyob hauv lub tshuab ziab khaub ncaws los ntawm cov khoom siv xws li lub tshuab nqus tsev twj, xws li tswj lub tshuab nqus tsev kawm ntawv qib siab ntawm -0.08MPa thiab -0.09MPa, tuaj yeem ua kom ziab kom nrawm dua thiab txhim kho cov cua sov. coefficient. Txawm li cas los xij, kev saib xyuas yuav tsum tau them rau kev sib khi thiab kev ruaj ntseg ntawm lub tshuab nqus tsev kom tsis txhob muaj cua nkag los ntawm kev cuam tshuam rau lub tshuab nqus tsev.