ʻO ka hue cryogen Dewar, i haku ʻia e Sir James Dewar ma 1892, kahi ipu mālama insulated. Hoʻohana ākea ia i ka halihali a me ka mālama ʻana o ka wai waena (nitrogen wai, wai oxygen, wai argon, a me nā mea ʻē aʻe) a me ke kumu anuanu o nā lako pono ʻelua. ʻO ka cryogenic Dewar he ʻelua flasks, kahi i kau ʻia i loko o kekahi a hoʻopili ʻia ma ka ʻāʻī. ʻO ke āpau ma waena o nā ʻōlapa ʻelua e hoʻokahe hapa i ka ea, e hana ana i kahi hakahaka kokoke, kahi e hoʻēmi nui ai i ka hoʻolilo wela ma o ka conduction a i ʻole ka convection.

huahana pono:

Hoʻohana nui ʻia ia no ka halihali ʻana a me ka mālama ʻana i ka oxygen o ka wai, nitrogen wai, wai argon a me nā aila kūlohelohe liquefied
2. ʻO ke kiʻekiʻe kiʻekiʻe insulated multilayer insulation ʻaoʻao e hōʻoia i ka helu o ka evaporation haʻahaʻa, a me nā mea pono o ka puka komo e hōʻoia i ka hana maikaʻi
3. Hāʻawi ka evaporator i kūkulu ʻia i loko i 9nm3 / h paʻa mau ke kōpena
4. Hoʻohana ʻia ke kinoea overpressure gas i loko o ka mea throttle
5. Pole me ka mea hoʻohui honua CGA maʻamau
6. Hiki ke hoʻokō i ka hoʻolālā ring damping kūikawā i nā koi o ka halihali pinepine

cryogen Dewar ʻōmole i hoʻohana ākea ʻia i ka hana mīkini, ʻoki ʻana i ka laser, hana moku, lāʻau lapaʻau, mālama holoholona, ​​semiconductor, meaʻai, kemika haʻahaʻa-mahana, aerospace, pūʻali koa a me nā ʻoihana ʻē aʻe. ʻO ke kumu hoʻohālikelike i nā keu o ka nui o ka mālama nui, ke kumu kūʻai halihali haʻahaʻa, palekana maikaʻi, hōʻemi ʻana i ka haumia kinoea a me ka hoʻokele maʻalahi.

ʻO ka ʻōlelo maʻamau, ʻehā mau kīwī ʻo Dewar, ʻo ia hoʻi ka pahu hoʻohana waipona, aila hoʻohana kiwikā, a me nā pahu vent. Eia hou, aia ke ana o ke kaomi kinaika a me ke ana pae pae wai. ʻAʻole hāʻawi ʻia ka ʻōmole Dewar i kahi kiwikā palekana, akā me kahi pāhaʻi hāhā [6]. Ke piʻi aʻe ke kaomi o ke kinoea i loko o ka paukū i ke kaomi huakaʻi o ka kiwikā o ka palekana, e lele koke ke kiwikā o ka palekana a hoʻopau koke a hoʻopau i ke kaumaha. Inā holo ʻole ke kiwikā o ka palekana a hōʻino ʻia paha ka paukū e ka ulia, piʻi ikaika ke kaomi i ka paukū i kekahi kekelē, e haki aunoa ka pā o ka pahū pahū, a e hoʻoliʻiliʻi ʻia ke kaomi o ka paukū i kaomi lewa i ka manawa. Mālama nā ʻōmole Dewar i ka oxygen wai ʻona, kahi e hoʻonui nui ai i ka hiki ke mālama i ka oxygen.