Kwesinye isikhathi izindlela ezilula zokukhipha umoya zinengqondo kakhulu.
Izinga lokushisa kanye nomswakama - ukugcina lokhu kulinganisela kungaba umthombo womzabalazo oqhubekayo kubakhiqizi be-greenhouse. Njengoba isikhathi sasehlobo sijikeleza, ngezinye izikhathi amafomu alula kakhulu ukuphuza umoya ingenza umqondo omkhulu ngesikhathi nangezindleko.
“Ukungenisa umoya okungokwemvelo kuyindlela edume kakhulu yokungenisa umoya kubalimi banamuhla be-greenhouse eNyakatho Nenkabazwe,” kusho uLeigh Coulter, umongameli we-GGS Structures, ezinze eVineland, e-Ont. Njengoba echaza, ukungenisa umoya kwemvelo kudume ngokulinganayo ezindlini zokugcina izithombo ezixhumeke phansi kuya phansi, lapho lolu hlobo lokungena komoya lungaphumelela kakhulu. Ukuze uqonde ukuthi kungani, u-Coulter udweba isithombe esingokoqobo esiboniswe lapha.
“Ama-roof vents asebenza ku-principal we-chimney effect. Umoya oshisayo ngaphakathi ku-greenhouse ukhuphuka ngokwemvelo. Ngokubeka indawo yokukhipha umoya ohlangothini lwe-leeward, umoya ohamba phezu kwe-vent udala ukucindezela okudonsa umoya oshisayo ku-greenhouse. Amapayipi aseduze nomhlabathi ohlangothini oluvunguzayo avumela umoya opholile wangaphandle ungene esikhundleni somoya oshisayo okhishwayo.”
Yakhelwe kusuka ezinsikeni ezinde, ukuphakama kwezakhiwo ezixhunywe ku-gutter kuvumela umphumela omkhulu we-chimney. Izindlu zokugcina izithombo ezizimele zingasebenzisa zombili izintuba zophahla kanye nezinhlangothi ezigoqekayo ukuze kwandiswe inani lokungena komoya elingokwemvelo. Ku-greenhouse eklanywe kahle, imiphumela ingaba ukupholisa ngisho nangaphakathi kwesitshalo, ukuze uthole umkhiqizo ofanayo.
Uma sekushiwo lokho, kunezimo lapho ukuphumela ngaphandle kwemvelo kungase kungafaneleki khona.
“Uma udinga ukuthi izinga lokushisa le-greenhouse yakho libe ngaphansi kwezinga lokushisa elizungezile futhi usendaweni eyomile yesimo sezulu, khona-ke ukupholisa ngefeni namaphedi kungcono kunokungenisa umoya wemvelo,” kuchaza u-Coulter. "Kodwa ifeni nephedi azisebenzi kahle ezindaweni ezinomswakama, ngakho-ke umoya wemvelo ungcono kulezo zimo."
Ngaphambi kokushisa kwasehlobo, u-Coulter uncoma ukuthi uhlole ukugeleza komoya ezintubeni, kufakwe ama-racks agcotshwe ngamafutha futhi kuhlolwe ukunakekelwa okufanele. “Ukuze ubone ngeso lengqondo ukugeleza komoya ungasebenzisa amabhomu entuthu anombala njengesixazululo sobuchwepheshe obuphansi ukuze ubone ukuthi umoya ugeleza kanjani endaweni ebamba ukushisa. Le nqubo ingasetshenziswa futhi ukuze ubone lapho unokuvuza komoya ongase ufune ukukuqeda noma ukukunciphisa ngaphambi kobusika.”
Ugcizelela ukuthi ukungena komoya kuyingxenye eyodwa kuphela yokulawulwa kwemvelo. “Umswakama nezinga lokushisa kanye namazinga okukhanya nawo adlala indima enkulu ekunqumeni ukuthi ama-greenhouse systems asebenza kanjani. Ikhompiyutha ekahle yendawo ezungezile izothatha imibono evela ngaphandle nendawo ekhulayo futhi inqume ukuthi yini okufanele ilungiswe ukuze kugcinwe indawo ekahle yesilimo.”
Kulabo abafuna ukubuyisela izindlu zokugcina izithombo ezindala, u-Coulter uthi bakwazile ukungeza umoya wemvelo ezindaweni eziningi zokugcina izithombo ezindala eminyakeni edlule.
“Okudingekayo nje ukuthi sazi imininingwane yesakhiwo se-greenhouse ekhona, indawo yolwazi lwesimo sezulu, kanye nezitshalo ozitshalayo. Ukusuka lapho singakwazi ukwakha uhlelo nomlimi.”
Kumagazini kaJanuwari weGreenhouse Canada, abafundi bethulwa umqondo 'wokukhula ngokunikezwa amandla kwezitshalo' (GPE). Ukuhlanganisa isipiliyoni somlimi nolwazi lwe-physiology yezitshalo, umgomo we-GPE uwukuthuthukisa ukuziphatha kwezitshalo endaweni ebamba ukushisa ngokugcina ibhalansi ebalulekile ehlanganisa amandla, amanzi, i-CO.2 futhi ifaka ngaphakathi kwesitshalo.
Lawa mabhalansi angagadwa yizinzwa, ahlanganiswe nezilinganiso zezitshalo, bese atolikwa ngomongo wesayensi yezitshalo nefiziksi ukusiza ukwenza kahle futhi kuthuthukiswe isivuno.