ʻOmole wai hoʻokaʻawale ʻia me ka paʻa lima

He mea nui nā kīʻaha Thermos i ke ola o nā kānaka i kēlā me kēia lā.Nui ka poʻe makemake e inu i ka wai wela, a hiki i ke kīʻaha thermos ke mālama i ka mahana o ka wai, no laila hoʻohana nā kānaka a pau i ka hoʻoilo.No laila, no ke aha e hiki ai iā ia ke mālama i ka mahana, ʻike ʻoe i ke kumu ma hope o ia?

Hoʻokumu ʻia ke kīʻaha thermos mai ka ʻōmole thermos.ʻO ke kumu o ka mālama ʻana i ka wela ua like ia me ka ʻōmole thermos.No ka maʻalahi o ka laweʻana, hanaʻia ka'ōmole i kīʻaha.Ma mua, ua hoʻohana nā kānaka i nā ʻōmole thermos e mālama i ka wai wela.Kapa ʻia nā ʻōmole Thermos he ʻōmole thermos, ʻōmole wai paila a i ʻole nā ​​ipu thermos.Paʻa ka waha me ka ʻōpala.

Ua hoʻokumu ʻia ka pahu ʻūhā hou i ka makahiki 1892 e ke kauka Pelekane ʻo Sir James Dewar.I kēlā manawa, e hana ana ʻo ia i kahi hana noiʻi no ka hoʻoheheʻe kinoea.No ka hoʻokahe ʻana i ke kinoea ma kahi wela haʻahaʻa, pono mua ʻo ia e hoʻolālā i kahi pahu e hiki ke hoʻokaʻawale i ke kinoea mai ka wela o waho.No laila ua noi ʻo ia iā Berg, he ʻenehana aniani, e puhi i ka ʻōmole pālua nona.ʻO ka pahu aniani ʻelua ʻāpana, ua uhi ʻia nā paia o loko o nā ʻāpana ʻelua me ka mercury, a laila e omo ʻia ka ea ma waena o nā papa ʻelua e hana i kahi ʻūhā.Ua kapa ʻia kēia ʻano omole "Du bottle", hiki ke hoʻololi i ka mahana o ka wai i loko o ia mea no kekahi manawa me ka nānā ʻole inā he anu a wela paha.

ʻEkolu ala o ka hoʻololi ʻana i ka wela: ka hoʻoili ʻana i ka wela, ka convection wela a me ka pāhawewe wela.ʻO ka liner o ka hue wai i hoʻopaʻa ʻia he ʻano aniani pālua ʻelua, a ua hoʻomāmā ʻia ka waena e hōʻemi i ka hoʻoiho wela;ua ālai ʻia ka liner aniani me kahi pōpō ʻaʻole maʻalahi e lawe i ka wela, a hiki ke ninini ʻia ka wai wela e hoʻemi i ka convection wela;ua uhi ʻia ka liner ma waena o ke aniani ʻāpana ʻelua ʻāpana kālā, hiki ke hoʻohālikelike i ka pāhawewe wela i loko o ka hue.Mai hoʻohaʻahaʻa i kēlā me kēia ʻōmole thermos liʻiliʻi, hoʻohana pono ia i nā ʻano hoʻololi wela ʻekolu e loaʻa ai ka hopena mālama wela maikaʻi loa.

ʻO ka liner kīʻaha thermos mua loa ʻo ia ka liner o loko o kahi ʻōmole wai thermos liʻiliʻi, akā no ka maʻalahi o ka inu ʻana, ua hāmama ka waha o loko.Me ka ulu ʻana o ke kaiāulu, ua ʻike ʻole ʻia kēia ʻano kīʻaha thermos liner fragile, a ʻoi aku ka nui o nā kīʻaha thermos i hana ʻia me ke kila kila, akā ʻo ke kumu o ka mālama ʻana i ka wela.

ʻO ka ʻōmole wai thermos stainless steel he ʻano papalua ʻelua, a ʻo ka pahu i loko a me ke kino kīʻaha e hui pū ʻia e hana i kahi ʻōpala, ʻaʻole ia e hoʻololi i ka wela;ʻO ka moa o ka ʻōmole wai thermos he hana sila maikaʻi, a he liʻiliʻi loa ka nalowale o ka wela ma o ka convection.Hoʻopili ʻia ke keleawe a i ʻole ke kālā ma waena o ka pahu i loko a me nā ʻāpana ʻelua o ke kila kila ma ke kino kīʻaha, hiki ke hoʻemi pono i ka wela i nalowale e ka radiation.He mea maʻalahi ka lawe ʻana i nā ʻōmole wai i hoʻopaʻa ʻia i ke kila kila, paʻa a maʻalahi hoʻi e hoʻomaʻemaʻe, a ua lilo i mea punahele hou ma ka mākeke.

ʻO ka ʻōlelo maʻamau, ʻo ka ʻāpana ʻino loa o ka ʻōmole thermos ka bottleneck, no laila ʻoi aku ka maikaʻi o ka mālama ʻana i ka wela i ke kīʻaha thermos me ka nui a me ka waha liʻiliʻi.Ke hele nei ma ke kaʻa a hana ʻana i nā haʻuki waho, lilo ke kīʻaha thermos nui i mea pono e loaʻa.

Mālama ka thermos i ka mahana ʻaʻole ka mehana, no laila ʻaʻole ia e mālama i ka wai wela i kekahi mahana, akā hiki iā ia ke mālama i nā mea e like me ka sorbet i kahi mahana.ʻO ke ʻano o ke kīʻaha thermos he mea paʻakikī i ka wela o loko e hemo, a ʻaʻole maʻalahi i ka wela o waho ke komo i loko, no laila hiki i ke kīʻaha thermos ke mālama i ka "mahana" a me ka "anu".