2. Taupānga
2.1 Ko te take tuturu
Te rōrahi hauQo te mata keri o tetahi maina he 3m3/s, ko te 0. 0045(N·s) te ātete hau o te maina.2)/m4, te utu mana hauehe 0. 8CNY/kwh;Ko te utu o te 800mm te diameter o te 650 CNY / pcs, ko te utu mo te 1000mm te diameter o te 850 CNY / pcs, na tangohia.b= 65 CNY/m;te whakarea utuko te whakaurunga me te tiaki i te awa ko te 0.3;ko te kaha o te whakawhiti motika he 0.95, a ko te 80% te kaha o te waahi whakahaere o te powhiriwhiri o te rohe.Kimihia te diameter ohaoha o te maina powhiriwhiri.
E ai ki te tauira (11), ka taea te tatau i te diameter ohaoha o te duct ventilation maina:
2.2 He pai te diameter o te maina whakamahana mo nga hiahia rereke
E ai ki te tātai (11) me etahi atu tawhā i roto i te take tūturu, tātaihia te diameter o te duct ventilation maina ōhanga ki te rōrahi rangi rerekē.Tirohia te Ripanga 4.
Ripanga 4 Te hononga i waenga i nga rereke rereke o te hau e hiahiatia ana mo te mata mahi me te diameter o te putunga hau ohaoha
| Te rahi o te hau e hiahiatia ana mo te kanohi mahi/(m3· s-1) | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 | 4 | 5 |
| Te diameter o te awa ohaoha/mm | 0.3627 | 0.5130 | 0.6283 | 0.7255 | 0.8111 | 0.8886 | 1.0261 | 1.1472 |
Mai i te Ripanga 4, ka taea te whakatau he nui ake te diameter o te putunga whakangao ohaoha i tera o te putunga hau noa.Ko te whakamahinga o te arai hau ohaoha he painga ki te whakanui ake i te rahi o te hau o te mata mahi, te whakaiti i te kohi hiko, me te whakaheke i nga utu whakangao.
3. Whakamutunga
3.1 I te wa e whakamahia ana te hiko o te maina mo te whakamaaramatanga o te rohe, ko te diameter o te waahanga whakamahana e pa ana ki te utu hoko o te waahi whakamahana maina, te utu hiko o te waahi whakamahana maina, me te utu mo te whakaurunga me te utu tiaki o te waahi whakamahana maina. .He pai rawa atu te whanui o te maina whakamahana hau me te iti rawa o te utu.
3.2 A, no te whakamahi i te maina ventilation takere mo ventilation rohe, kia rite ki te rōrahi rangi e hiahiatia ana e te mata mahi, whakamahia te ohaoha diameter ventilation takere ki te whakatutuki i te utu katoa iti o ventilation rohe, a he pai te pānga ventilation.
3.3 Mena ka taea e te waahanga o te huarahi, me te iti o te utu o te hokonga maina maina, me kowhiria te diameter o te waahanga ohaoha kia taea ai te whakatutuki i te kaupapa o te nui o te hau, te iti o te aukati me te utu iti. i runga i te mata mahi.
Wā tuku: Hūrae-07-2022
