He mīhini hiko te tāpine wai e huri ana i te kaha o te rere o te wai hei kaha o ngā mīhini hurihuri. Nō roto i ngā mīhini tāpine o ngā mīhini wai. I te tau 100 BC, i puta te kaupapa matua o te tāpine wai – te tāpine wai i Haina, i whakamahia hei hiki i te whakamakuku me te taraiwa i ngā taputapu tukatuka witi. Ko te nuinga o ngā tāpine wai hou kua tāutahia ki ngā teihana hiko wai hei taraiwa i ngā miihini whakaputa hiko. I roto i te teihana hiko wai, ka arahina te wai i te puna wai o runga ki te tāpine waipēhi mā te paipa upoko hei taraiwa i te kaikawe tāpine kia hurihuri, ka taraiwa i te miihini whakaputa hiko. Ka tukuna te wai kua oti ki raro mā te paipa hiku. Ko te teitei ake o te upoko wai me te nui ake o te tukunga, ko te nui ake o te kaha putanga o te tāpine waipēhi.
He raruraru cavitation kei roto i te rūma o te tāpine ngongo i roto i te teihana hiko wai, e hanga ana i te cavitation me te whānui o te 200mm me te hohonu o te 1-6mm i te rūma o te tāpine i te tomokanga me te putanga wai o te mata kotahi, e whakaatu ana i ngā whitiki cavitation puta noa i te porowhita. Ina koa, ko te cavitation i te taha o runga o te rūma o te tāpine he nui ake te kitea, me te hohonu o te 10-20mm. Ka tātarihia ngā take o te cavitation i roto i te rūma o te tāpine penei:
He mea hanga te oma me te mata o te teihana hiko wai ki te maitai kore waikura, ā, ko te rauemi matua o te rūma oma ko te Q235. He ngoikore tōna pakari me tōna ātete ki te cavitation. Nā te iti o te kaha rokiroki wai o te puna wai, kua roa te wā e mahi ana te puna wai i te upoko hoahoa tino teitei, ā, he maha ngā mirumiru mamaoa e puta ana i roto i te wai hiku. I te wā e whakahaerehia ana, ka rere te wai i roto i te tāpine waipēhi mā te rohe kei raro iho te pēhanga i te pēhanga mimiti. Ka mimiti te wai e haere ana i roto i te āputa mata ka kohua hei whakaputa mirumiru mamaoa, ka puta te pēhanga pānga ā-rohe, ka pā te pēhanga whakarewa me te hama wai i ia wā, ka puta he kawenga pānga maha ki te mata whakarewa, ka pakaru ngā rauemi. Nō reira, ka taka te cavitation karaihe whakarewa. Ka puta te cavitation maha i runga i te rūma oma i te tomokanga me te putanga o te mata kotahi. Nō reira, i raro i te whakahaerenga o te upoko wai tino teitei mō te wā roa, ka puta haere te cavitation, ā, ka hohonu haere tonu.
I te aro atu ki te raruraru cavitation o te rūma o te tāwhana, i whakatikatikaina te teihana hiko wai mā te whakatikatika whakarewa i te tīmatanga, engari i kitea anō he raruraru cavitation nui i roto i te rūma o te tāwhana i te wā o te tiaki i muri mai. I tēnei wā, i whakapā mai te kaiwhakahaere o te umanga ki a mātou, me te tumanako ka taea e mātou te āwhina ki te whakaoti i te raruraru cavitation o te rūma o te tāwhana. I whakawhanakehia e ā mātou kaihangarau he mahere tiaki kua whakaritea i runga i te tātari taipitopito o ngā taputapu o te umanga. I a mātou e whakarite ana i te rahi o te whakatika, i whiriwhiria e mātou ngā rauemi nanopolymer waro kia rite ki te taiao whakahaere o te taputapu hei whakatutuki i ngā whakaritenga whakahaere roa i raro i ngā tikanga mahi i te papaanga. Ko ngā mahi tiaki i te papaanga e whai ake nei:
1. Whakahaerehia te maimoatanga tango hinu mō ngā wāhanga pakaru o te rūma o te tāhūpaina;
2. Te tango waikura mā te pupuhi onepu;
3. Whakaranua te rauemi nanopolymer Sorecun ka pania ki te wāhanga e whakatikahia ana;
4. Whakamārōhia te rauemi, ka tirohia te mata whakatikatika.
Wā tuku: Oketopa-14-2022
