I te whakatau tata i tētahi kaupapa kore taumaha

Kaituhi: Smartweigh– Taumaha Upoko Maha

Kua mārama ahau ināianei ko te tere rere he wai matao (tere rere: 7210L/HR), te wai kohua (tere rere: 1500L/HR), ā, ko te pēhanga o te wai he tata ki te 3-4KG. E hiahia ana ahau ki te pātai e hia ngā paipa me tāuta e au? Ka taea e au te whakaahua taipitopito, ngā mihi! ...Kua mārama ahau ināianei ko te tere rere he wai matao (tere rere: 7210L/HR), te wai kohua (tere rere: 1500L/HR), ā, ko te pēhanga o te wai he tata ki te 3-4KG, e hiahia ana ahau ki te pātai e hia ngā paipa me tāuta e au? Ka taea e au te whakaahua taipitopito, ngā mihi! Ka taea e koe te tīpako i tētahi, i ētahi rānei kupumatua i raro nei hei tiki i ngā mōhiohio e tika ana. Ka taea hoki e koe te pāwhiri i te "Tikina rauemi" Rapua ngā panga katoa. Whakawhanuihia te rere katoa = wāhanga paipa X rere wai = 0.002827X diameter paipa^2X rere wai (pūtoru/haora)^2 Mēnā me ine, me whakaaro tuatahi ki te rere o te wai, kātahi ka rite ki te taumaha motuhake o te wai, te mātotoru whanaunga kore taumaha me te diameter paipa. Tātaihia te tau paerewa Laiduo, kātahi ka whakamahia te paerewa Laylow hei tātai i te tauwehenga ātete i te ara, ka tirohia ngā paipa i roto i te paipa (pēnei i ngā tī, ngā tuke, ngā takirere kuaha, ngā pane nui me ngā pane iti, me ētahi atu) hei kimi i te roa o te ngongo ara iahiko ōrite. Kātahi ka tātaihia te kino o te pēhanga mahi o te paipa matua mai i te tauwehenga ātete ngaronga pēhanga me te roa katoa o te paipa (tae atu ki te roa o te paipa ara iahiko ōrite), ā, ka tātaihia te rere wai motuhake kia rite ki a Bernoulli, ā, ka tātaihia anō te rere wai motuhake kia rite ki te tukanga katoa i runga ake nei, kia tata rā anō ngā mea e rua (te pūnaha arotau whakamātautau auau).

Nō reira, he iti noa iho ngā hoa i roto i te tataunga motuhake, ko te nuinga o ēnei e ahu mai ana i te rahi o te rerekētanga pēhanga hei whiriwhiri i ngā rere wai rerekē, me te tatau i runga i te tikanga o mua. I roto i ngā kaupapa hangarau whānui, ko te pēhanga mahi o te paipa wai tap he 0.1--0.5MPa te nuinga, ā, ko te rere o te wai i roto i te paipa wai tap he 1--3 m/s, ko te tikanga he 1.5 m/s. Kāore i pai taku whai. He aha tāu kōrero mō tēnei whakautu? Mō te aromatawai, ko te rere o te wai o te paipa he V=4 m/s, ko te tauine kore taumaha he V=40 tekimita/s, ā, kotahi rita = 1 tekimita pūtoru, kātahi ko te rere katoa o te paipa he (wāhanga whakareatia ki te rere wai): Kia mōhio: Ka taea anake te ine i te rere katoa ina me hoatu te rere o te wai, e ahu mai ana i te 4 m/s.

I kī a Weightless kua whakarongohia tēnei urupare e ngā tāngata o te ipurangi, ā, kua takahia tōku aro. He aha tāu kōrero mō tēnei urupare? Ko te aromatawai e hangai ana ki te 7.2t, ka taea te whakamahi mō te DN80, ā, ka taea te rahi ake. Kāore i te mārama he aha te tikanga o te wai matao me te wai kohua. Ki te hiahia koe ki te tapahi maeneene i te wai kohua, he tino iti te rere katoa, he nui rawa te paipa 80, ā, ka taea te whakamahi i te paipa 25.

(I te tīmatanga, e 65 ngā ngongo e tika ana, engari he iti ake te whakamahinga o ngā ngongo e 65, nō reira ka whiriwhiria he 80 ngā ngongo.) Kāore he tukanga tatau taipitopito. I te nuinga o te wā, e whakaarohia ana ko te wheako mahi ka whakatauhia e te whakahaere, kātahi ka whakahaerehia i runga i ngā pūrongo excel noa. Hei wāhanga o ngā kaupapa mahi tūmatanui, ko te pāmahana, te pēhanga mahi me te matotorutanga kāore i te whakaarohia, ā, he tataunga matapōkere, kāore e kino i roto i ngā āhuatanga tono motuhake. Kua whakarongohia tēnei whakautu e ngā kaiwhakamahi ipurangi, ā, kua whakaitihia taku āwangawanga. He aha tāu kōrero mō tēnei whakautu? Kua kati ngā aromatawai.

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