Ka Cryogenic Imperative

I ka puka ʻana mai o ka hydrogen wai (LH₂) ma ke ʻano he pōhaku kihi ikehu maʻemaʻe, ʻo kona kumu hoʻolapalapa -253°C e koi ai i nā ʻenehana i hiki ʻole i ka hapa nui o nā mea hana. Ma lailahose hikiwawe i hoʻopaʻa ʻialilo ka ʻenehana i mea hiki ʻole ke kūkākūkā. Me ka ʻole? E aloha aku i nā pōʻino pōʻino, nā hemahema o ke kūkulu ʻana, a me nā moeʻuhane maikaʻi.

Anatomy o ka hana

Ma kona kumu, ahose ʻaʻahu ʻaʻahuua kūkulu ʻia e like me ka thermos ma luna o nā steroid:

ʻElua paipu kuhiliʻole concentric (maʻamau 304/316L māka)

Wehe ʻia nā kinoea conductive (<10⁻⁵ mbar)

ʻO 30+ mau ʻāpana MLI e hoʻoheheʻe ana i ka radiation i hoʻopaʻa ʻia ma waena

Hoʻokō kēia pale pale ʻekolu i ka meapaipu paakikiʻAʻole hiki: kūlou me ka haki ʻole i ka wā e hoʻopaʻa ai i ka pahu pahu me ka mālama ʻana i ka hoʻoili wela ma lalo o 0.5 W/m·K. No ka hiʻohiʻona - ʻoi aku ka liʻiliʻi o ke koko wela ma mua o kāu thermos kope.

No ke aha i hāʻule ai nā laina maʻamau me LH₂

Hoʻokomo nā molekala atomika o ka Hydrogen i ka hapa nui o nā mea e like me nā ʻuhane ma nā paia. Loaʻa nā hoses maʻamau i:

✓ Embrittlement i ka wā cryo

✓ Pohō ke komo (>2% no kēlā me kēia hoʻoili)

✓ Nā mea hoʻopili hau

Hose ʻaʻahu ʻaʻahunā ʻōnaehana pale i kēia ma o:

ʻO nā sila metala hermetic (VCR/VCO)

ʻO ka paipu ʻuʻuku kūpaʻa kū i ka permeation (electropolished 316L SS)