Hoʻolauna i nā huaʻōlelo pamu maʻamau (6) - Manaʻo cavitation pamu

Cavitation o ka Pump: Kumumanaʻo a me ka Heluhelu ʻana

ʻIke holoʻokoʻa o ka hanana cavitation
ʻO ke kaomi o ka mahu wai ka kaomi mahu o ka wai (kaomi mahu saturated). Pili ke kaomi mahu o ka wai i ka mahana. ʻO ke kiʻekiʻe o ka mahana, ʻo ka nui o ke kaomi mahu. ʻO ke kaomi mahu o ka wai maʻemaʻe ma ka mahana o ka lumi o 20 ℃ he 233.8Pa. ʻOiai ʻo ke kaomi mahu o ka wai ma 100 ℃ he 101296Pa. No laila, hoʻomaka ka wai maʻemaʻe ma ka mahana o ka lumi (20 ℃) ​​e mahu ke hāʻule ke kaomi i 233.8Pa.
Ke hoʻemi ʻia ke kaomi o ka wai i ke kaomi vaporization ma kekahi mahana, e hana ka wai i nā pehu, i kapa ʻia ʻo cavitation. Eia naʻe, ʻaʻole ka mahu i loko o ka pehu he mahu piha, akā aia pū kekahi kinoea (ʻo ka ea nui) ma ke ʻano o ka hoʻoheheʻe ʻana a i ʻole ka nucleus.
Ke kahe nā pehu i hana ʻia i ka wā o ka cavitation i ke kaomi kiʻekiʻe, e emi ana ko lākou nui a pahū aʻe. ʻO kēia hanana e nalowale ai nā pehu i loko o ka wai ma muli o ka piʻi ʻana o ke kaomi ua kapa ʻia ʻo cavitation collapse.

ʻO ke ʻano o ka cavitation i loko o ka pamu
Ke hana nei ka pamu, inā ʻo ka ʻāpana kūloko o kona ʻāpana kahe (maʻamau ma kahi ma hope o ke komo ʻana o ka pahi impeller). No kekahi kumu, i ka wā e hāʻule ai ke kaomi piha o ka wai i hoʻopili ʻia i ke kaomi vaporization ma ka mahana o kēia manawa, hoʻomaka ka wai e vaporize ma laila, e hana ana i ka mahu a hana i nā pehu. Ke kahe nei kēia mau pehu i mua me ka wai, a i ka wā e hiki ai i kahi kaomi kiʻekiʻe, ʻo ke wai kaomi kiʻekiʻe a puni nā pehu e koi i nā pehu e emi koke a pohā. Ke pohā ka pehu, e hoʻopiha nā ʻāpana wai i ka lua me ka wikiwiki kiʻekiʻe a kuʻi kekahi me kekahi e hana i ka hāmare wai. E hōʻino kēia hanana i nā ʻāpana over-current ke hana ʻia ma ka paia paʻa.
ʻO kēia kaʻina hana ke kaʻina hana cavitation pump.

Ka hopena o ka cavitation pamu
Hoʻopuka i ka walaʻau a me ka haʻalulu
Ka hōʻino ʻana o ka palaho o nā ʻāpana over-current
Ka hōʻino ʻana o ka hana