ʻO ka mānoanoa ʻikea e pili ana i ka ratio o ka nuipaʻa o kahi mea i kona leo ʻike. ʻO ka leo ʻike ʻia ka leo maoli me ka leo pore i pani ʻia. Hōʻike ia i ka ratio o ka lumi i noho ʻia e kekahi mea ma lalo o ka hana a ka ikaika o waho i ka nui o ka mea, i hōʻike pinepine ʻia ma nā kilokani no ka mika cubic (kg/m³). Hiki iā ia ke hōʻike i ka porosity, paʻakikī, elasticity a me nā waiwai ʻē aʻe o ka mea. No nā mea me nā ʻano maʻamau, hiki ke ana pololei ʻia ka leo; no nā mea me nā ʻano like ʻole, hiki ke hoʻopaʻa ʻia nā pores me ka wax sealing, a laila hiki ke ana ʻia ka leo e ka wai. ʻIke pinepine ʻia ka mānoanoa ʻike ma ke ʻano kūlohelohe o ka mea, ʻo ia hoʻi, ka maloʻo maloʻo i mālama ʻia i ka lewa no ka manawa lōʻihi. No nā mea hoʻoheheʻe ʻia a me nā mea hoʻoheheʻe plastik, ʻokoʻa ka ratio o nā ʻūhū paʻa i ka ʻōpala a me nā mea palaki, a aia kahi ākea me ka haʻahaʻa haʻahaʻa haʻahaʻa.
Hiki i ka porosity kiʻekiʻe ke hoʻokaʻawale maikaʻi; akā, hiki i ka haʻahaʻa haʻahaʻa ke alakaʻi maʻalahi i ka deformation a me ka pohā. I ka manawa like, piʻi ka ikaika o ka hoʻopiʻi me ka piʻi ʻana o ka density, e hōʻoiaʻiʻo ana i ka paʻa lōʻihi o ka mea. Ma keʻano o ka thermal conductivity, ʻoi aku ka liʻiliʻi o ka density, ʻoi aku ka haʻahaʻa o ka conductivity thermal a ʻoi aku ka maikaʻi o ka insulation thermal; akā inā kiʻekiʻe loa ka mānoanoa, piʻi ka hoʻoili wela o loko a emi ka hopena insulation thermal. No laila, i ke koho ʻana i nā mea insulation thermal, pono e noʻonoʻo piha i ko lākou ʻano kikoʻī e hōʻoia i ke kaulike ʻana o nā waiwai like ʻole e hoʻokō i nā pono o nā hiʻohiʻona hoʻohana like ʻole.
ʻO ka mānoanoa nui e pili ana i ka mānoanoa o ka mea ponoʻī, ʻo ia hoʻi, ka ratio o ka hakahaka i noho ʻia e kekahi mea i kona nuipaʻa. I loko o nā mea wela wela, ʻo ia ka mea maʻamau e pili ana i ka ratio o ka ea pore o loko a me ka nui maoli o kēlā me kēia ʻāpana leo, i hōʻike ʻia ma nā kilokani no kēlā me kēia cubic mika (kg/m³). E like me ka ʻike maka, ʻo ka puʻupuʻu nui kekahi o nā ʻāpana koʻikoʻi no ka loiloi ʻana i ka hana o nā mea insulation thermal, hiki ke hōʻike maʻamau i ke kaumaha, ka hoʻoheheʻe wai, ka insulation thermal a me nā ʻano ʻē aʻe o ka mea.
No laila, ʻoiai ʻo ka ʻike a me ka puʻupuʻu nui e hōʻike ana i ka nui a me ka porosity o nā mea insulation thermal, aia kekahi mau ʻokoʻa ʻokoʻa:
1. Nā manaʻo like ʻole
ʻO ka mānoanoa o nā mea insulation thermal e loiloi nui i nā waiwai o ka mea e like me ka porosity a me ka elasticity, a hiki ke hōʻike i ka pilina kūlike ma waena o ka ea a me ka nui maoli i loko o ka mea.
ʻO ka puʻupuʻu puʻupuʻu e pili ana i ka nui o ka mea insulation pono'ī, a ʻaʻole pili i nā waiwai o ka hale i loko.
2. Nā ʻano helu helu like ʻole
Hoʻohālikelike ʻia ka mānoanoa ʻikea o nā mea insulation ma ke ana ʻana i ka nuipa a me ka leo o ka hāpana, ʻoiai ke helu ʻia ka nui o ka nui ma ke ana ʻana i ke kaumaha o kahi hāpana mea i ʻike ʻia.
3. Aia paha nā hewa
No ka mea, ʻo ka helu ʻana o ka mānoanoa ʻike o ka mea insulation e pili ana i ka leo i noho ʻia e ka laʻana i hoʻopili ʻia, ʻaʻole hiki ke hōʻike maikaʻi i ke ʻano holoʻokoʻa o ka mea. I ka manawa like, aia nā lua a i ʻole nā mea ʻē aʻe i loko o ka mea, hiki i ka helu ʻana o ka ʻike ʻike i nā hewa. ʻAʻole loaʻa kēia mau pilikia i ka nui nui a hiki ke hōʻike pololei i ka nui a me ke kaumaha o ka mea insulation.
ʻAno ana
ʻO ke ala hoʻoneʻe: No nā mea me nā ʻano maʻamau, hiki ke ana pololei ʻia ka leo; no nā mea me nā ʻano like ʻole, hiki ke hoʻopaʻa ʻia nā pores me ke ʻano hoʻopaʻa wax, a laila hiki ke ana ʻia ka leo me ke ʻano neʻe.
Pycnometer method: No kekahi mau mea, e like me nā mea kalapona, hiki ke hoʻohana ʻia ke ʻano pycnometer, me ka toluene a i ʻole n-butanol ka hopena maʻamau no ke ana ʻana, a i ʻole ke ʻano hoʻoneʻe kinoea hiki ke hoʻohana ʻia e hoʻopiha i nā micropores me ka helium a ʻaneʻane ʻaʻole e hoʻopili hou ʻia.
Nā wahi noi
Loaʻa i ka ʻike ākea ka hoʻohana ʻana i ka ʻepekema waiwai. No ka laʻana, i loko o nā mea hoʻoheheʻe a me nā huahana insulation plastic, ʻo ke kumu nui o ka hoʻāʻo ʻana i ka density ka loiloi ʻana i kāna hana paʻa a hōʻoia i ka hoʻokō ʻana o kāna insulation thermal a me nā waiwai mechanical i nā kūlana. Eia kekahi, hoʻohana ʻia ka ʻike kikoʻī e loiloi i nā waiwai kino o nā mea a me ka hana o nā mea i nā noi ʻenehana.
Inā piʻi ka mānoanoa a piʻi aʻe ka ʻāpana a me ka plastic, hiki ke hoʻonui ʻia ka ikaika waiwai a me ka mea hoʻolimalima pulu, akā e piʻi mau ka conductivity thermal a e pōʻino ka hana insulation thermal. ʻIke ʻo Kingflex i kahi helu kaulike maikaʻi loa i ka pilina paʻa ʻana ma waena o ka conductivity thermal haʻahaʻa, ʻoi aku ka kiʻekiʻe o ka wai hoʻolimalima waiwai, ka ʻoi aku ka maikaʻi o ka ʻike a me ka ikaika o ka waimaka, ʻo ia hoʻi, ka mānoanoa maikaʻi loa.
Ka manawa hoʻouna: Jan-18-2025
