Qhov tseem ceeb ntawm Cryogenic

Raws li cov kua hydrogen (LH₂) tshwm sim los ua lub hauv paus ntawm lub zog huv si, nws qhov kub ntawm -253 ° C xav tau cov khoom siv uas feem ntau tsis tuaj yeem ua. Qhov ntawd yog qhov twglub tshuab nqus tsev insulated saj zawg zog hosethev naus laus zis yuav tsis sib tham. Yog tsis muaj nws? Hais nyob zoo rau qhov txaus ntshai boil-tawm, kev ua haujlwm tsis ua haujlwm, thiab npau suav phem phem.

Anatomy ntawm Kev Ua Haujlwm

Hauv nws qhov tseem ceeb, alub tshuab nqus tsev jacketed hoseyog tsim zoo li lub thermos ntawm steroids:

Twin concentric stainless hlab (feem ntau 304/316L qib)

High-vacuum annulus (<10⁻⁵ mbar) stripped ntawm conductive gases

30+ hluav taws xob-reflective MLI cov khaubncaws sab nraud povtseg hauv nruab nrab

Qhov kev tiv thaiv triple-barrier no ua tiav dab tsicov kav dej nrujtsis tuaj yeem: khoov yam tsis tau tawg thaum lub tanker hooks thaum ua kom kub hloov qis dua 0.5 W / m·K. Rau qhov kev xav - qhov ntawd tsis tshua muaj thermal los ntshav ntau dua li koj cov kas fes thermos.

Vim li cas Standard Lines Fail nrog LH₂

Hydrogen's atomic-scale molecules nkag mus rau feem ntau cov ntaub ntawv zoo li ghosts los ntawm phab ntsa. Conventional hoses raug kev txom nyem los ntawm:

✓ Embrittlement ntawm cryo temps

✓ Permeation poob (> 2% ib qho kev hloov pauv)

✓ Ice-plugs fittings

Lub tshuab nqus tsev vacuum hosesystems counter qhov no los ntawm:

Hermetic metal-on-metal seals (VCR / VCO fittings)

Permeation-resistant tubing tubing (electropolished 316L SS)