Uma ubucwaninga amasistimu okukhanyisa i-horticulture ye-LED yesikhungo sakho sokukhula kwesitshalo, kungenzeka ukuthi uhlaselwe ngamamethrikhi ahlukahlukene abakhiqizi bezibani abawasebenzisayo ukumaketha imikhiqizo yabo. Amanye amagama nama-akhronimi ongawabona ahlanganisa: ama-watt, ama-lumens, i-LUX, amakhandlela onyawo, i-PAR, i-PPF, i-PPFD, nokusebenza kahle kwe-photon. Ngenkathi yonke le migomo ihlobene nokukhanyisa, abambalwa kuphela abakhethiwe abakutshela ngempela amamethrikhi abalulekile wesistimu yokukhanyisa i-horticulture. Inhloso yalesi sihloko ukuchaza le migomo nama-akhronimi, ukulungisa ukungaqondi kahle okuvamile, nokusiza abalimi baqonde ukuthi imaphi ama-metrics asebenzayo kumasistimu okukhanyisa e-horticulture, nokuthi yimaphi angasebenzi.
Abantu basebenzisa i-lumens
Izitshalo nabantu babona ukukhanya ngendlela ehluke kakhulu komunye nomunye. Abantu nezinye izilwane eziningi zisebenzisa into ebizwa nge-photopic vision ezimeni ezikhanyiswe kahle ukuze babone umbala nokukhanya. Ama-lumens ayiyunithi yokulinganisa esekelwe kumodeli yokuzwela kwamehlo omuntu ezimeni ezikhanyiswe kahle, yingakho imodeli ibizwa ngokuthi ijika lempendulo yesithombe (Umfanekiso 1). Njengoba ubona, ijika lempendulo yesithombe linomumo wensimbi futhi libonisa ukuthi abantu bazwela kangakanani ukukhanya okuluhlaza, kunokukhanya okuluhlaza okwesibhakabhaka noma okubomvu. I-LUX, namamitha ekhandlela onyawo akala ubukhulu bokukhanya (kusetshenziswa ama-lumens) kwezicelo zokukhanyisa zezentengiselwano nezokuhlala, okuwukuphela komehluko phakathi kwakho kokubili okuyiyunithi yendawo ezilinganiswa ngayo (i-LUX isebenzisa i-lumen/m2 futhi ikhandlela lonyawo lisebenzisa ilume/ ft2).
Ukusebenzisa i-LUX noma amamitha ekhandlela onyawo ukukala ukukhanya kokukhanya kwezinhlelo zokukhanyisa ze-horticulture kuzokunikeza izilinganiso ezihlukene kuye nge-spectrum yomthombo wokukhanya, ngisho noma ukala ukuqina okufanayo kwe-PAR.
Inkinga eyisisekelo ngokusebenzisa i-LUX noma amamitha ekhandlela onyawo lapho kulinganiswa ukukhanya kokukhanya kwezinhlelo zokukhanyisa i-horticulture ukumelwa kancane kokukhanya okuluhlaza okwesibhakabhaka (400 - 500 nm) nokubomvu (600 - 700 nm) ku-spectrum ebonakalayo. Abantu bangase bangakwazi ukubona ukukhanya kulezi zifunda, kodwa izitshalo zisebenza kahle kakhulu ekusebenziseni ukukhanya okubomvu nokuluhlaza okwesibhakabhaka ukushayela i-photosynthesis. Kungakho ama-lumens, i-LUX, namakhandlela onyawo kungafanele neze asetshenziswe njengamamethrikhi okukhanyisa kwe-horticulture.
Yini i-PAR
I-PAR imisebe esebenzayo ye-photosynthetic. Ukukhanya kwe-PAR amaza amaza okukhanya phakathi kwebanga elibonakalayo lama-nanometers angu-400 kuya kwangu-700 (nm) ashayela i-photosynthesis (Umfanekiso 1). I-PAR igama elisetshenziswa kakhulu (futhi elivame ukusetshenziswa kabi) elihlobene nokukhanyiswa kwe-horticulture. I-PAR AYISIYO isikali noma “imethrikhi” njengezinyawo, amayintshi noma amakhilogremu. Kunalokho, ichaza uhlobo lokukhanya oludingekayo ukuze kusekelwe i-photosynthesis. Inani nekhwalithi yokukhanya kwe-spectral yokukhanya kwe-PAR amamethrikhi abalulekile okufanele ugxile kuwo. (Ukuthola okwengeziwe mayelana nekhwalithi yokukhanya kwe-spectral chofoza lapha). Izinzwa ze-Quantum ziyithuluzi eliyinhloko elisetshenziselwa ukulinganisa ubukhulu bokukhanya kwezinhlelo zokukhanyisa ze-horticulture. Lezi zinzwa zisebenza ngokusebenzisa isihlungi sokubona ukudala ukuzwela okufanayo ekukhanyeni kwe-PAR (Umfanekiso 1), futhi zingasetshenziswa ngokuhambisana nemitha yokukhanya ukukala amandla okukhanya asheshayo noma isiqophi sedatha ukuze kukale amandla okukhanya akhulayo.
Isiphetho
Ukuze utshale imali ohlelweni olufanele lokukhanyisa i-horticulture ukuze uhlangabezane nezinjongo zakho zokutshala nebhizinisi, udinga ukwazi i-PPF, i-PPFD, nokusebenza kahle kwe-photon ukuze wenze izinqumo zokuthenga unolwazi. Kodwa-ke, lawa mamethrikhi amathathu akufanele asetshenziswe njengokuhluka okukodwa ukuze kusekelwe izinqumo zokuthenga. Kukhona okunye okuguquguqukayo okuningana okufana ne-form factor kanye ne-coefficient of utilization (CU) okudingeka kucatshangelwe futhi.
Zonke izici zidinga ukusetshenziswa ngokuhlanganiswa ukuze ukhethe amasistimu afaneleka kakhulu asekelwe ezinhlosweni zakho zokutshala nebhizinisi, futhi umyalezo wokuyisa ekhaya ukuthi i-PPF, i-PPFD, nokusebenza kahle kwama-photon amamethrikhi afanele asetshenziswa ososayensi nezinkampani ezihola phambili embonini ye-horticulture. Uma inkampani ingakunikezeli ngamamethrikhi alungile asetshenziselwa ukukhanyisa i-horticulture, akufanele ukuthi ithengise amasistimu okukhanyisa i-horticulture, futhi ngeke ukwazi ukuqinisekisa ukusebenza kweqiniso kwesistimu yayo. U-Fluence Bioengineering uhlala eshicilela lawa mamethrikhi ezincwadini zomkhiqizo futhi ungomunye wabaholi ekusebenzeni kahle kwezithombe ze-photosynthetic njengoba kuqinisekiswe yi-Rutgers ne-Utah State University.
Ukuze uthole ukwaziswa okwengeziwe:
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