Nō nā tata nei, i angitu a Forster ki te āwhina i ngā kiritaki o Awherika ki te Tonga ki te whakapai ake i te hiko kua tāutahia o tana teihana hiko wai 100kW ki te 200kW. Ko te kaupapa whakapai ake e whai ake nei
Pūkaha whakaputa tāpoi 200KW Kaplan
Te upoko whakatauranga 8.15 m
Rere hoahoa 3.6m3/s
Rere mōrahi 8.0m3/s
Rere iti rawa 3.0m3/s
Te kaha tāuta kua whakatauria 200kW
I tīmata te kaihoko ki te whakapai ake i te teihana hiko wai i te marama o Tīhema o te tau kua hipa. I whakakapia e Forster te tāpine me te whakaputa hiko mō te kaihoko, ā, i whakapai ake hoki i te pūnaha whakahaere. Whai muri i te whakanui ake i te upoko wai mā te 1m, i whakapai ake te hiko kua tāutahia mai i te 100kW ki te 200kW, ā, i tāpirihia te pūnaha hononga whatunga. I tēnei wā, kua honoa angitu ki te whatunga mō te whakaputa hiko, ā, e tino harikoa ana ngā kaihoko.
Ngā Painga o te Tīpuna Toia a Forster
1. He tere motuhake teitei, he pai hoki ngā āhuatanga pūngao. Nō reira, he teitei ake te tere o te waeine me te rere o te waeine i tō te tāpine Francis. I raro i ngā āhuatanga pane me te putanga ōrite, ka taea e ia te whakaiti i te rahi o te waeine whakaputa tāpine waipēhi, te whakaiti i te taumaha o te waeine me te penapena rauemi, nō reira he nui ngā painga ōhanga.
2. He ngāwari te whakatutuki i ngā whakaritenga o te hanga i te āhua o te mata me te taratara o ngā mata o te tāpine rere-axial. Nā te mea ka taea e ngā mata o te tāpine rere-axial te huri, he teitei ake te whai huatanga toharite i te tāpine Francis. Ina rerekē te kawenga me te pane, he iti noa te rerekētanga o te whai huatanga.
3. Ka taea te wetewete i ngā mata o te mīhini huri hiko o te hoe rere axial hei whakahaere i te hanga me te kawe waka.
Nō reira, ka noho pumau te tāpine rere-axial i roto i te whānuitanga mahi nui, he iti ake te wiri, ā, he nui te whai huatanga me te putanga. I roto i te whānuitanga o te upoko wai iti, tata rite ki te whakakapi i te tāpine Francis. I ngā tekau tau tata nei, kua nui te whanaketanga me te whakamahinga whānui e pā ana ki te kaha o te waeine kotahi me te upoko wai.
Ngā ngoikoretanga o te tāpine axial Forster
1. He iti te maha o ngā mata, ā, he cantilever, nō reira he ngoikore te kaha, ā, kāore e taea te whakamahi ki ngā teihana hiko wai upoko waenga me te teitei.
2. Nā te nui o te rere o te waeine me te tere o te waeine, he iti ake te teitei momi i te tāpine Francis i raro i te pane wai kotahi, ka hua ake he hohonutanga keri nui me te haumi nui ki te turanga o te teihana hiko.
E ai ki ngā ngoikoretanga o te tāpine rere-axial i runga ake nei, ka whakapaitia tonutia te pane tono o te tāpine rere-axial mā te tango i ngā rauemi hou he kaha teitei me te ātete ki te cavitation i roto i te hanga tāpine me te whakapai ake i te āhua ahotea o ngā mata i roto i te hoahoa. I tēnei wā, ko te whānuitanga pane tono o te tāpine rere-axial he 3-90 m, kua uru atu ki te rohe o te tāpine Francis.
Wā tuku: Maehe-11-2022
