Kuwumkhuba ojwayelekile ukusebenzisa umoya omile oqondile ukuze upholise izinkukhu ngesikhathi esishisayo sasehlobo. Ukuze uthole ukulima kwamaqanda okunamandla aphezulu, isivinini somoya endaweniihhoko lezinkukhukufanele ifinyelele okungenani ku-3m/s, futhi isivinini somoya endlini yezinkukhu ezindaweni ezishisa kakhulu nezinomswakama ophezulu kufanele sifinyelele ngaphezu kuka-4m/s ukuze uthole “umphumela wokupholisa umoya” ongcono.
“Umphumela wokupholisa umoya” ikakhulukazi ubhekisela esivinini somoya ukunciphisa izinga lokushisa lomzimba wezinkukhu.
Isivinini somoya singaba nomthelela ongakanani ekushiseni komzimba wezinkukhu?
“Ngokocwaningo olwenziwe yiNyuvesi yaseGeorgia isivinini somoya sinyuke sisuka ku-0m/s saya ku-2.54m/s, izinga lokushisa lomzimba wezinkukhu lizokwehla ngaphezu kuka-6.°C.”
Ukuze ngithole isivinini esikhulu somoya, ngiwumkhuba ojwayelekile ukwenzaindlu yenkukhuusilingi, nciphisa ukuphakama kwehhoko lezinkukhu, noma ukusuka phezulu kwehhoko lezinkukhu eduze kophahla lukanxantathu ubheke phansi njalo phansi njalo ngebanga elithile ukuze ufake ikhethini le-windbreak noma le-windbreak ukuze kuncishiswe indawo ephambanayo yehhoko lezinkukhu ukuze kuthuthukiswe isivinini somoya ehhokweni.
Kungani wenze lokhu, ikakhulukazi ngoba isivinini somoya sihlobene eduze nendawo ye-cross-sectionalihhoko lezinkukhu.
Ukubalwa kwesivinini somoya ehhokweni lenkukhu elinomoya omude: isivinini somoya = umthamo wokungenisa umoya / indawo ephambanayo yehhoko
Kuyacaca kusuka kule fomula ukuthi ukukhulisa isivinini somoya wehhoko, noma kukhuphule umoya wehhoko, okungukuthi ukwandisa inani labalandeli abangazweli ukucindezela okubi, noma ukunciphisa indawo ephambanayo yehhoko.
Ukwenyuka kwabalandeli kusho ukwenyuka kwezindleko, ukwanda kokusetshenziswa kukagesi, ukwenyusa izindleko zokuwulungisa, futhi ngokuhamba kwesikhathi kwenezela izindleko ezinkulu zokusebenza ebhizinisini.
Bese ukwandisa isivinini somoya kufanele kucatshangelwe ekunciphiseni indawo ye-cross-sectional of theihhoko lezinkukhu. Ngezansi siqonda izinguquko zehhoko lezinkukhu ngaphambi nangemva kokukhulisa ikhethini elivimbela umoya ngezibalo ezithile.
Isibonelo: ihhoko lezinkukhu 12m ububanzi, 100m ubude, izindonga eziseceleni zehhoko ziphakeme ngo-2.4m, phakathi kwehhoko (eliphakeme kakhulu) lingu-4.8m, ihhoko lifakwe abalandeli abangu-10 50 inch, umthamo wokungenisa umoya we-fan ngayinye ku-50 Pa ngu-31000m.³/h.
Khona-ke isivinini somoya sehhoko lezinkukhu kufanele sibe: isivinini somoya = umthamo wokungenisa umoya / indawo ephambanayo = 31000/3600× 10 / [12× (4.8 + 2.4) / 2] = 86.1/43.2 = 1.99m / s
Uma sifaka uphahla noma ikhethini lomoya ehhokweni lezinkukhu, ukuze ukuphakama phezulu kwehhoko noma umkhawulo ophansi we-drape kusuka emhlabathini kube ngu-3.6m, futhi ukuphakama kwezinhlangothi zombili zehhoko kuhlala kungashintshi, isivinini somoya = 31000/3600×10/[12×(3.6+2.4)/2]=86.1/36=2.39m/s
Ngakho-ke, endabeni yenani elifanayo labalandeli, ngokunciphisa indawo ephambanayo yendlu yezinkukhu kungakhuphula isivinini somoya ngesisekelo se-0.4m/s yasekuqaleni, okungukuthi, ukusebenza kahle kukhuphuke ngo-20%, izinguquko zesivinini somoya ezikhiqizwa umphumela wokupholisa komoya nazo zihlukile, umehluko phakathi komphumela wokupholisa komoya wokubili ohambisana nezinga lokushisa elingaba ngu-2.℃, esimweni sokushisa okuphezulu kakhulu, umehluko wezinga lokushisa ngu-2℃kwanele ukulimaza izinkukhu.
Isikhathi sokuthumela: Aug-12-2022
