Cryogenic dewars yog ib qho tseem ceeb ntawm cryogenics, ib ceg ntawm physics cuam tshuam nrog cov khoom thiab tus cwj pwm ntawm cov khoom ntawm qhov kub tsis tshua muaj siab. Cov dewars no yog siv los khaws thiab thauj cov cryogens, uas yog cov khoom uas muaj nyob rau hauv lub xeev ua kua ntawm qhov kub thiab txias, xws li kua nitrogen los yog kua helium.
Cryogenic dewars feem ntau yog tsim los ntawm cov hlau tsis muaj steel lossis txhuas thiab tau tsim los tiv thaiv qhov txias txias ntawm cov cryogens uas lawv muaj. Cov dewars no yog lub tshuab nqus tsev rwb thaiv tsev, uas txhais tau hais tias lawv raug tshem tawm kom tshem tawm cov pa roj sov, txo qhov kev hloov ntawm cov cua sov thiab tswj qhov kub ntawm lub cryogen sab hauv.
Lub cryogenic dewar tau muab faib ua ob ntu: lub nkoj sab hauv qhov chaw khaws cia cryogen, thiab lub plhaub sab nraud, uas yog siv los tiv thaiv cov hlab ntsha sab hauv los ntawm kev puas tsuaj sab nraud. Lub plhaub sab nrauv kuj yog siv los tiv thaiv lub tshuab nqus tsev rwb thaiv tsev ntawm cov hlab ntsha sab hauv thiab sab nraud.
Cryogenic dewars tuaj nyob rau hauv ntau qhov ntau thiab tsawg thiab cov duab nyob ntawm seb lawv xav siv. Lawv tuaj yeem me me kom haum rau hauv xib teg ntawm koj txhais tes lossis loj txaus los tuav ob peb cubic meters ntawm cryogen. Kev tsim thiab kev tsim kho ntawm cov dewars no yuav tsum tau coj mus rau hauv tus account cov khoom tshwj xeeb ntawm cov khoom siv cryogen khaws cia, xws li nws cov ntsiab lus kub, thermal conductivity, thiab lwm yam khoom siv lub cev.
Cryogenic dewars yog siv rau ntau yam kev siv, suav nrog kev tshawb fawb, kev lag luam, thiab tshuaj. Hauv kev tshawb fawb, cryogenic dewars yog siv los khaws thiab thauj cov qauv uas xav tau qhov kub thiab txias heev rau lawv khaws cia lossis kev tshuaj xyuas. Hauv kev lag luam, cryogenic dewars yog siv los khaws thiab thauj cov cryogens xws li kua nitrogen los yog kua helium, uas yog siv rau ntau yam kev tsim khoom. Hauv cov tshuaj, cryogenic dewars yog siv los khaws thiab thauj cov qauv xws li tib neeg cov ntaub so ntswg lossis cov tshuaj uas xav tau qhov kub thiab txias heev rau lawv khaws cia.
Cryogenic dewars kuj pom lawv txoj hauv kev rau ntau yam khoom siv xws li khoom siv hauv tsev thiab khoom siv hluav taws xob. Piv txwv li, qee lub tub yees thiab lub freezers siv cryogenic dewars los tswj qhov kub thiab txias hauv cov khoom siv.
Hauv kev xaus, cryogenic dewars yog cov khoom tseem ceeb ntawm cov khoom siv cryogenic, siv los khaws thiab thauj cov cryogens ntawm qhov kub thiab txias. Cov dewars no yog tsim los ntawm cov hlau tsis muaj steel lossis txhuas, lub tshuab nqus tsev insulated, thiab muab faib ua ob ntu: lub nkoj sab hauv thiab lub plhaub sab nraud. Lawv tuaj nyob rau hauv ntau qhov ntau thiab tsawg nyob ntawm seb lawv xav siv thiab siv hauv kev tshawb fawb, kev lag luam, tshuaj, thiab cov khoom siv.
