I roto i te tukanga o te ahumahi hanga pepa e huri ana ki te tere me te whakapai ake, ko te wāhanga whakamaroke, hei hononga matua e whakatau ana i te kounga o te pepa me te whai huatanga o te whakaputanga, kāore i mutu te whakahou i ana hangarau taputapu. Ahakoa ka taea e ngā rango whakamaroke mamaoa tuku iho te whakatutuki i ngā hiahia whakamaroke taketake, he ngāwari ki a rātou te pāngia e ngā raruraru pēnei i te wiri o te taha o te pepa, te miro, me te whati i roto i ngā āhuatanga whakaputa tere teitei, e uaua ai te urutau ki ngā whakaritenga whakaputa o ngā hua pepa iti te rahinga me te kounga teitei. I runga i tēnei papamuri, kua puta ake ngā rōra whakamaroke VAC (e mōhiotia ana ko ngā rōra Vac, arā, ngā rōra whakamaroke korehau). Nā ō rātou mahi mimiti korehau me te whakamaroke āwhina motuhake, kua noho rātou hei taputapu tautoko matua i roto i te wāhanga whakamaroke o ngā mīhini pepa tere teitei, e whakarato ana i te tautoko nui mō te whakapai ake i te kounga me te whai huatanga i roto i te ahumahi hanga pepa.

Ehara ngā rōra whakamaroke VAC i ngā wāhanga whakamahana me te whakamaroke tuku iho, engari he taputapu whakau tukutuku pepa tere-rahi me te whakamaroke āwhina e mahi tahi ana me ngā rango whakamaroke mamaoa. E whakamahia ana ēnei i roto i te whirihoranga whakamaroke waea kotahi o ngā mīhini pepa tere-rahi, ā, e kitea whānuitia ana i roto i ngā raina whakaputa mō te pepa ahurea, te pepa pania, te kāri mā, me te pepa turanga kōpikopiko iti-rahi. He rerekē i te momo mahi o ngā rango whakamaroke mamaoa tuku iho e whakawhirinaki ana ki te tuku mamaoa o roto hei whakarato i te wera whakamaroke, ka tutuki i ngā rōra whakamaroke VAC te whakau tukutuku pepa mā te mimiti pēhanga kino, ā, i te wā kotahi ka āwhina i te tere ake o te tukunga o te hau makuku, ka whakapai ake i te pai o te whakamaroke whānui, ka hanga he pūnaha whakamaroke kua whakaritea o te "whakau tukutuku whakamahana + pepa".

Mō te hoahoa hanganga, e rua ngā momo o ngā rōra whakamaroke VAC hei urutau ki ngā tere me ngā hiahia whakaputa rerekē o ngā waka. I roto i ēnei, kāore e hiahiatia he pouaka korehau i roto i te rōra Vac kua haehaea. He awaawa 5mm te whānui me te 4mm te hohonu o te mata rōra, ā, he iti ngā kōhao e horahia ana ki raro i ngā awaawa, me ngā kōhao matotoru ake i ngā taha hei whakahaere i te miro. Ka taea e ia te whakaputa i te taumata korehau o te 2kPa ina honoa ki te pouaka pupuhi hau, ā, ka whakahaeretia te tere whakatuwheratanga i te 0.1%~0.4%, ka tutuki te hononga tukutuku pepa mā te pēhanga kino o te rere o te hau. He tino māmā tōna hanganga, he pai mō te hanga mīhini pepa tere-waenga me te tere-tiketike. Ko tētahi atu momo ko te rōra Vac momo pouaka korehau kua hangaia, he kōhao takahanga tika, he kōhao matotoru rānei i runga i te anga rōra, me te rūma korehau ka taea te whakarite kia rite ki te whānui o roto, e hono tika ana ki te papu korehau. He teitei ake te tohu korehau me te mana whakahaere tika ake, he mea hanga motuhake mō ngā mīhini pepa tere-tino tere me te tere neke atu i te 1000m/min, ka taea te whakatau pai i te raruraru pumau tukutuku pepa i raro i ngā āhuatanga mahi tino uaua. I roto i ētahi raina whakaputa kounga teitei, ka hangaia he ōwehenga tika e ngā rōra Vac me ngā rango whakamaroke. Hei tauira, ko te mīhini pepa tā kounga teitei me te putanga ā-tau o te 130,000 tana he wāhanga whakamaroke kei roto ko te 29 ngā rango whakamaroke mamaoa me ngā rōra Vac maha me te diameter o te 1500mm. Ko te rarangi o raro o ngā rango whakamaroke tuku iho ka whakakapia katoatia e ngā rōra Vac, ka tutuki ai te whakaputa tonu me te kore e miro taura, ā, ka tino whakapai ake i te pumau mahi.

Ko te uara matua o ngā rōra whakamaroke VAC e ahu mai ana i te kaupapa mahi pūtaiao me ngā painga mahi i raro i ngā āhuatanga mahi tere-teitei. I roto i te hanga tūturu, ko te rarangi o runga o ngā rango whakamaroke mamaoa te kawenga mō te whakarato wera hei mimiti i te makuku i roto i te tukutuku pepa, ko te rarangi o raro o ngā rōra whakamaroke VAC ka mimiti kaha i te tukutuku pepa i runga i te mata waea maroke mā te pēhanga kino, ka whakakore i te kaha whakatere i puta mai i te mahi tere-teitei, ā, ka whakaoti i ngā āhuatanga uaua o te ahumahi pēnei i te wiri o te taha o te tukutuku pepa, te miro, me te whati. I taua wā anō, ka mimitihia te rere o te hau i roto i te hauhautanga o te pute ki roto i ngā kōhao hurihuri, ka tere ake te tukunga o te hau makuku, ka pakaru te paparanga pupuri hau makuku i runga i te mata o te tukutuku pepa, ā, ka whakapai ake i te tere maroke. I te wāhanga miro, ka taea e te hoahoa o ngā kōhao matotoru i ngā taha te whakarei ake i te pānga mimiti, te whakapai ake i te tere angitu o te miro, me te whakapoto i te wā miro. Ko te tauira whakawhiti o te mīhini pepa PM15 a Lee & Man Paper e whakaū katoa ana i tēnei. Whai muri i te whakawhiti i ngā rango whakamaroke takirua taketake ki ngā rango whakamaroke kotahi, me te whakapai ake i a rātou ki ngā rōra Vac, me te whakakotahitanga o ngā pouaka whakau kua arotauhia me ngā taputapu whakapūngao pōke, i whakaitihia te tere pakaru o te tukutuku pepa mā te 60%, i whakaitihia te wā kore mahi i whakaritea mā te 30%, ā, i te whakaputanga o te pepa turanga kōpikopiko 70~90g/m² i te tere o te 1000m/min, 10 noa iho ngā wā pakaru o te pepa ia marama, ā, i piki ake te pai o te whakaputa mā te 3%.

Ki te whakatauritea ki ngā rango whakamaroke mamaoa tuku iho, ko te tūnga mahi o ngā rōra whakamaroke VAC he pai ake te whakau i te whatu pepa me te whakamaroke āwhina, ā, he hononga tautoko, he hononga taurite hoki ēnei e rua. Mō te pūtake wera, kāore he hanganga whakamahana o ngā rōra whakamaroke VAC, ā, ka whakawhirinaki katoa ki te pēhanga kino mō te mahi, ko ngā rango whakamaroke mamaoa ia e whakamahi ana i te mamaoa hei pūtake wera, ā, ka mahi i ngā mahi whakawhiti wera matua me te whakamaroke; mō te hanganga mata, ka whakamahia e ngā rōra whakamaroke VAC ngā hoahoa awaawa, keri rānei, ko ngā rango whakamaroke mamaoa ia he mata maeneene kua whakakikoruatia ki te kōrome, ki te rino maka rānei; mō te arotahi mahi, ka arotahi ngā rōra whakamaroke VAC ki te whakau i te whānui o te whatu pepa, te whakamaroke āwhina, me te whakaiti i ngā hapa pepa, ko ngā rango whakamaroke mamaoa ia e arotahi ana ki te whakawhiti wera whai hua hei whakaoti i te mimiti o te makuku i roto i te whatu pepa. Mō te kaha whakamaroke, he iti te kaha whakamaroke o te rōra whakamaroke VAC kotahi, ā, tata ki te 2~3 rōra Vac he rite ki te kotahi rango whakamaroke paerewa. Nō reira, i roto i ngā mahi whaihua, he mea tika kia tauritehia e te pūtaiao te maha o ngā rōra Vac me ngā rango whakamaroke mamaoa kia rite ki te tere o te waka me te nui o te pepa kia tutuki ai te taurite i waenga i te whai huatanga me te utu.

I raro i te whanaketanga o te rautaki "waro rua" me te panonitanga atamai me te penapena hiko o te umanga hanga pepa, me whai whakaaro hoki te whakamahinga o ngā rōra whakamaroke VAC ki te whakahaere i te whakapaunga hiko me te arotautanga tiaki. Me tautoko ngā rōra whakamaroke VAC i ngā pūnaha korehau me te hauhautanga, ā, ki te whakatauritea ki ngā whirihoranga whakamaroke tuku iho, he paku teitei ake ngā utu whakapaunga hiko me te tiaki, engari ka taea te whakatutuki i te penapena me te whakaiti i te whakapaunga hiko mā te arotautanga hangarau. Hei tauira, i whakapai ake a Lee & Man Paper i te pouaka korehau SymRun i te wā o te panonitanga, me te whakaiti i te kawenga o te pā hau mā te 30% me te whakapai ake i te taumata korehau; i arotau a Valmet Finland i te mokowā i waenga i ngā rōra Vac me ngā rango whakamaroke mā te matawai 3D me te whakatauira, i whakanui ake i te koki takai whakamaroke tukutuku pepa, i whakaiti i te maha o ngā pupuhi me ngā paipa hau, ā, i whakaiti i te whakapaunga hiko me ngā utu tiaki. I roto i te tiaki o ia rā, me horoi tonu ngā kōhao me ngā awaawa o te rōra Vac ki te hau kōpeke hei ārai i te aukati, tirohia te mahi hiri korehau me te pāmahana peera i te wā kotahi, me te whakahaere i te taumata korehau i roto i ngā whakaritenga tukanga. Mā te taurite ki ngā pūnaha hauhautanga pukoro me ngā pūnaha papu wera whai hua ka tino whakapai ake i te whai huatanga o te whakamaroke whānui me te whakaiti i te whakapaunga mamaoa.

I te whakahoutanga tonu o te hangarau mīhini pepa tere-rahi me te tipu haere o te hiahia mō ngā hua pepa kounga teitei, ka neke atu te hangarau o ngā rōra whakamaroke VAC ki te tika, te tiaki pūngao, me te mohio. I te heke mai, me te awhina o ngā hangarau hou pēnei i te whakaata CFD me te tatau tau, ka taea te whakapai ake i te hoahoa poka me te hanganga rūma korehau o ngā rōra Vac hei whakapai ake i te tika o te whakahaere pēhanga kino me te tohu here tukutuku pepa; me te whakakotahitanga o te pūoko mohio me te tātari raraunga nui, ka taea te whakatinana i te whakahaere hihiri o te tohu korehau hei urutau ki ngā hiahia whakaputa o ngā momo pepa rerekē me ngā tere waka rerekē; i te wa ano, mā te whakahoutanga rauemi me te arotau hanganga, ka taea te whakaiti i te whakapaunga pūngao me te kakahu o ngā taputapu, ā, ka taea te whakaroa i te roa o te ratonga. Hei "taputapu whakaū kounga" mō ngā pūnaha whakamaroke hanga pepa tere-rahi, ehara i te mea ka whakaoti noa i ngā mamae maha o ngā whirihoranga whakamaroke tuku iho i raro i ngā tikanga mahi tere-rahi, engari ka āwhina hoki i ngā umanga hanga pepa ki te whakapai ake i te kounga hua me te arotau i te pai o te whakaputa, me te werohanga i te kaha hou ki te whanaketanga kounga-teitei o te umanga hanga pepa.