Plhaub-thiab- raj kub exchangersmuaj ntau yam kev siv thiab tuaj yeem siv rau ntau yam. Muaj ntau hom kev siv lub plhaub- thiab - raj kub exchangers, txhua tus muaj cov yam ntxwv ntawm kev ua tau zoo. Tom qab siv sij hawm ntev -, ib txheej ntawm sediment zoo li tsim nyob rau saum npoo ntawm lub plhaub - thiab - raj cua kub exchangers, yuav tsum tau ntxuav tsis tu ncua. Cov tshuaj tua kab mob yog siv los ntxuav lub plhaub-thiab- raj kub exchangers, thiab muaj ntau hom tshuaj xws li. Hauv qab no yog cov lus piav qhia ntxaws.
I. Hom Plhaub-thiab-Tube Heat Exchangers
1. Fixed Tube-Tshooj Thaum tshav kub kub Exchangers
Cov nplooj ntawv raj ntawm ob qho kawg ntawm lub raj ntim khoom yog ua ke nrog lub plhaub. Hom no muaj cov qauv yooj yim tab sis tsuas yog tsim nyog rau kev sib pauv cua sov uas qhov sib txawv ntawm cov dej kub thiab txias yog me me thiab cov khoom siv tu lub plhaub sab tsis tas yuav tsum tau ua. Thaum qhov sib txawv ntawm qhov kub thiab txias me ntsis, tab sis lub plhaub - sab siab tsis siab dhau lawm, ib qho elastic expansion bellows tuaj yeem ntsia tau rau ntawm lub plhaub kom txo tau cov thermal stress.
2. Floating Head Heat Exchangers
Daim ntawv raj ntawm ib kawg ntawm lub raj ntim tuaj yeem ntab dawb, tshem tawm tag nrho cov thermal stress. Tag nrho cov hlua khi tuaj yeem rub tawm ntawm lub plhaub, ua kom yooj yim rau kev tu thiab tu. Floating taub hau kub exchangers yog dav siv tab sis muaj ib tug complex qauv thiab ntau dua manufacturing nqi.
3. U-Tube Heat Exchangers
Txhua lub raj xa hluav taws xob yog khoov rau hauv U-puab, nrog rau ob qho kawg kho nyob rau hauv cov cheeb tsam sab saud thiab qis ntawm tib lub raj ntawv. Ib qho baffle hauv lub thawv channel faib cov raj sab rau hauv qhov nkag thiab qhov hluav taws xob. Hom kev sib hloov cua sov no tshem tawm tag nrho cov kev ntxhov siab thermal thiab muaj cov qauv yooj yim dua li cov khoom siv hluav taws xob hauv lub taub hau, tab sis lub raj sab yog yooj yim los ntxuav.
4. Vortex Thaum tshav kub kub hloov zaj duab xis Thaum tshav kub kub Exchangers
Vortex heat transfer film heat exchangers txais qhov tseeb vortex heat transfer film technology, uas txhim kho cov cua sov hloov pauv los ntawm kev hloov cov kua dej hauv lub xeev. Thaum qhov nruab nrab ntws los ntawm qhov chaw ntawm lub vortex raj, nws scours lub raj nto, yog li kev txhim kho kev sib hloov hluav taws xob. Lub tshav kub hloov coefficient tuaj yeem siab txog 10,000 W / (m²·℃). Lub caij no, cov qauv no ua tiav kev tiv thaiv corrosion, siab -kub tsis kam, siab -siab tsis kam, thiab tiv thaiv- ntsuas qhov ua haujlwm. Cov kua dej ntawm lwm hom kev sib hloov cua sov yog nyob rau hauv ib qho ruaj khov - cov qauv kev taw qhia ntws, uas ua los ntawm kev ntws mus rau ntawm qhov chaw ntawm cov cua kub pauv cov raj thiab txo cov coefficient ntawm convective heat transfer coefficient.
II. Hom Tshuaj Txhuam Hniav Rau Cov Plhaub Ntxuav-thiab-Tube Heat Exchangers
1. Hydrofluoric Acid (HF)
Feem ntau, hydrofluoric acid yog tsim los ntxuav silicate nplai. Txawm tias qhov kub thiab txias tsis tshua muaj siab, hydrofluoric acid muaj lub zog ua kom zoo rau silicate nplai, thiab nws kuj txhawb kev tawg ntawm hlau oxide nplai.
2. Nitric Acid (HNO₃)
Thaum siv nitric acid los ntxuav cov cuab yeej, nws cov corrosiveness tsawg txawm tias tsis ntxiv cov tshuaj tiv thaiv corrosion. Yog li ntawd, thaum ntxuav cov khoom siv titanium nrog txo cov kua qaub, oxidizing nitric acid feem ntau ntxiv rau inhibit corrosion thiab hydrogen absorption ntawm titanium.
Yog li, thaum ntxuav titanium tshav kub exchangers, cov yam ntxwv ntawm nitric acid thiab hydrofluoric acid yuav tsum raug xam tias: nitric acid yog siv los ua tus neeg sawv cev tseem ceeb, thiab hydrofluoric acid ua tus pab cuam. Cov khoom muaj zog oxidizing ntawm nitric acid zoo inhibits corrosion thiab hydrogen absorption ntawm titanium los ntawm hydrofluoric acid. Thaum lub sij hawm tu, ib qho nyiaj ntawm oxidizing corrosion inhibitor A kuj tau ntxiv los txo qhov corrosion ntawm cov tshuaj ntxuav ntawm titanium.
3. Kev sib xyaw ntawm HF thiab lwm yam Inorganic Acids
Rau kev ntxuav silicate nplai, sib tov ntawm HF thiab lwm yam inorganic acids feem ntau siv, xws li HF nrog HCl (hydrochloric acid) lossis HF nrog HNO₃ (nitric acid). Txawm li cas los xij, thaum tu cov cuab yeej siv, cov txheej txheem tu siv rau cov ntaub ntawv xws li carbon steel, tooj liab, thiab stainless hlau tsis tuaj yeem siv tau yooj yim. Nyob rau hauv chav tsev kub, txawm tias qis - concentration HF tuaj yeem corrode hlau, thiab raws li qhov concentration ntawm HF nce, tus nqi corrosion ntawm cov cuab yeej nce ntau.
Xav kom tau txais cov khoom siv hluav taws xob sib txawv kom haum rau koj cov kev ua haujlwm (xws li, plhaub- thiab- raj hom rau kev lag luam tshuaj, phaj hom rau HVAC qhov xwm txheej, hom finned rau siab - qhov kub thiab txias)? Tham nrog peb cov kws tshaj lij, thiab peb yuav teb sai sai rau koj qhov kev lag luam- cov kev xav tau tshwj xeeb.
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