ʻO ka nui o ka wai kaʻa. Pehea e ana?

ʻO ka Density o ka wai hoʻoheheʻe DOT-4 a me nā hana glycol ʻē aʻe

ʻO ka nui o ka wai hoʻoheheʻe maʻamau i kēia lā, DOT-4, ma lalo o nā kūlana maʻamau, ʻokoʻa mai ka 1,03 a i ka 1.07 g/cm³. ʻO nā kūlana maʻamau ke ʻano o ka mahana o 20 °C a me ke kaomi ea o 765 mmHg.

No ke aha e ʻokoʻa ai ka mānoanoa o ka wai like e like me ka hoʻokaʻawale ʻana ma muli o ka brand kahi i hana ʻia ai? He mea maʻalahi ka pane: ʻo ka maʻamau i hoʻomohala ʻia e ka US Department of Transportation ʻaʻole i kau i nā palena koʻikoʻi e pili ana i ka haku mele. Ma nā huaʻōlelo liʻiliʻi, hāʻawi kēia maʻamau no: ke ʻano o ka base (no DOT-4 ʻo ia nā glycols), ka hiki ʻana o nā mea hoʻohui antifoam, nā mea hoʻopiʻi corrosion, a me nā ʻano hana. Eia kekahi, i nā hiʻohiʻona hana, ʻo ka waiwai wale nō ka mea i kuhikuhi ʻia, ma lalo o kahi a i ʻole kekahi ʻāpana wai e hāʻule ʻole. No ka laʻana, ʻo ka helu e hoʻolapalapa ai no ka hou (me ka wai ʻole) DOT-4 ma kahi o 230°C.

ʻO nā ʻāpana i koe a me kā lākou mau ʻāpana e hana i ka ʻokoʻa i ka density hiki ke ʻike ʻia i nā wai mai nā mea hana like ʻole.

ʻO nā wai hoʻoheheʻe glycol ʻē aʻe (DOT-3 a me DOT-5.1) i like ka like me DOT-4. ʻOiai ka ʻokoʻa o nā mea hoʻohui, ʻo ka ʻāpana kumu, glycol, e pili ana i 98% o ka huina. No laila, ʻaʻohe ʻokoʻa koʻikoʻi o ka density ma waena o nā haku mele glycol.

ʻO DOT-5 ʻO ka nui o ka wai silicone

ʻO ka wai DOT-5 he kumu silicone me ka hoʻohui ʻana i nā mea hoʻohui no nā kumu like ʻole, maʻamau e like me nā ʻano hana ʻē aʻe no nā ʻōnaehana brake.

ʻOi aku ka liʻiliʻi o ka wai silicone i hoʻohana ʻia no ka hana ʻana i nā pūhui hana no nā ʻōnaehana brake ma mua o ka wai. Ma kahi o 0,96 g/cm³. ʻAʻole hiki ke hoʻoholo i ke kumukūʻai kūpono, no ka mea, ʻaʻole i hoʻohālikelike ʻia ka lōʻihi o nā ʻāpana siloxane i nā silicones. Ua like ke kūlana me nā polymers. Hiki ke hōʻuluʻulu ʻia a hiki i 3000 mau loulou i ke kaulahao o kahi mole silicone. ʻOiai ʻoi aku ka liʻiliʻi o ka awelika lōʻihi o ka mole.

Hoʻomāmā iki nā mea hoʻohui i ke kumu silicone. No laila, he 5 g/cm ka mānoanoa o kahi wai hoʻoheheʻe DOT-0,95 mākaukau e hoʻohana.³.

Pehea e nānā ai i ka mānoanoa o ka wai wili?

He mea paʻakikī ke noʻonoʻo ʻo wai a no nā kumu ma waho o nā kūlana ʻoihana e pono ai ke kaʻina hana e like me ke ana ʻana i ka nui o ka wai kaʻa. Eia nō naʻe, aia kahi ala no ke ana ʻana i kēia waiwai.

Hiki iā ʻoe ke ana i ka haku mele glycol me ka hydrometer like i hoʻolālā ʻia e ana i ka nui o ka antifreeze. ʻO ka ʻoiaʻiʻo ʻo ka ethylene glycol, kahi mea pili, hoʻohana ʻia ma ke ʻano he kumu hana i ka antifreeze. Eia naʻe, nui ka hewa i ka hoʻohana ʻana i kēia ʻenehana.

ʻO ke ala ʻelua e koi i nā unahi pololei (ʻo ka liʻiliʻi o ka ʻāpana mahele, ʻoi aku ka maikaʻi) a me kahi pahu i kūpono i ka 100 grams (a i ʻole 1 lita). Hoʻemi ʻia ke kaʻina hana ana ma kēia ʻano i nā hana aʻe.

1. Paona mākou i nā ipu maloʻo, maʻemaʻe ma nā unahi.
2. E ninini pololei i 100 mau lika o ka wai paʻa.
3. Kaupaona mākou i ka ipu me ka wai.
4. Lawe i ka luhi kaumaha mai ka hopena i kau ʻia.
5. E mahele i ka waiwai i loaʻa i nā gram ma o 100.
6. Loaʻa iā mākou ka paʻa o ka wai hoʻomaha i g / cm³.

Ma ke ala ʻelua, me kahi degere o ka hewa, hiki iā ʻoe ke ana i ka density o kekahi wai. A mai poina e pili nui ka density i ka mahana o ka haku mele. No laila, ʻokoʻa paha nā hopena o nā ana i lawe ʻia ma nā mahana like ʻole.

ʻO ka wai pahu Volvo I No ka hoʻololi a i ʻole ka hoʻololi ʻana, ʻo ia ka nīnau!