Imingeni yokukhanya kwe-LED kwiHorticulture

Ngokuqinisekileyo, kukho imingeni kuyo nayiphi na iteknoloji evelayo, kwaye kukho imingeni ekukhanyeni kwe-horticultural ye-LED. Okwangoku, amava obuchwepheshe bokukhanya kobume obuqinileyo asephantsi kakhulu. Kwanezazinzulu zezityalo eziye zabandakanyeka kwiminyaka emininzi zisafunda “indlela yokukhanya” yezityalo. Ezinye zezi “fomula” zintsha azinakwenzeka okwangoku.

Abavelisi bokukhanyisa baseAsia bahlala bebekwe njengeemveliso ezifikelelekayo kodwa eziphantsi, kwaye iimveliso ezininzi eziphantsi kwimarike azinazo iziqinisekiso ezifanelekileyo ezifana nokulinganisa kwe-UL, kunye neengxelo ze-LM-79 ze-luminaire kunye neengxelo ze-LM-80 ze-LED. Abalimi abaninzi bazama ukuhambisa ukukhanya kwe-LED kwangethuba, kodwa baziva bekhungathekile ngenxa yokusebenza kakubi kwe-luminaire, ngoko ke izibane ze-sodium ezinoxinzelelo oluphezulu zisengumgangatho wegolide kwishishini.

Ewe kunjalo, zininzi iimveliso zokukhanyisa ezikumgangatho ophezulu we-LED kwimarike. Nangona kunjalo, abalimi behorticultural kunye neentyatyambo basafuna i-metrics ezingcono ezinxulumene nesicelo. Ngokomzekelo, i-American Society of Agricultural and Biological Engineers (ASABE) iKomiti yokuKhanya kwezoLimo yaqala ukuphuhlisa iimethrikhi ezisemgangathweni ngo-2015. Lo msebenzi uqwalasela iimethrikhi ezinxulumene ne-PAR (Photosynthetically Active Radiation) spectrum. Uluhlu lwe-PAR ludla ngokuchazwa njengebhendi ye-spectral ye-400-700 nm, apho iifotoni ziqhuba ngokusebenzayo i-photosynthesis. Iimetriki eziqhelekileyo ezinxulumene ne-PAR ziquka i-photosynthetic photon flux (PPF) kunye ne-photosynthetic photon flux density (PPFD).

Iresiphi kunye neemetrics

"Iresiphi" kunye neemethrikhi zidibene ngenxa yokuba umlimi ufuna i-metrics ukuchonga ukuba i-luminaire yesityalo ibonelela ngamandla kunye nokuhanjiswa kwamandla okubonakalayo (SPD), okubandakanya "iresiphi".

Uphando lwakwangoko lugxile kubudlelwane bokufunxa kweklorofili kumandla okubona, njengoko iklorofili isitshixo kwinkqubo yephotosynthesis. Uphononongo lwaselabhoratri lubonise ukuba incopho yamandla kwimbonakalo eluhlaza okwesibhakabhaka nabomvu ihambelana nencopho yokufunxa, ngelixa amandla aluhlaza engabonakalisi ukufunxa. Uphando lwakwangoko lukhokelele ekuboneleleni ngokugqithisileyo kwezibane ezipinki okanye ezimfusa kwimarike.

Nangona kunjalo, ukucinga kwangoku kugxininise ekukhanyeni okunika amandla aphezulu kwi-spectrum eluhlaza okwesibhakabhaka kunye nobomvu, kodwa kwangaxeshanye kukhupha ukukhanya okubanzi njengokukhanya kwelanga.

Ukukhanya okumhlophe kubaluleke kakhulu

Ukusebenzisa kuphela izibane ezibomvu neziluhlaza ze-LED zokukhula kuphelelwe lixesha. Xa ubona imveliso enale spectrum, isekelwe kwisayensi endala kwaye ihlala ingaqondwa kakuhle. Isizathu sokuba abantu bakhethe eluhlaza okwesibhakabhaka nobomvu kungenxa yokuba ezi ncopho zamaza zihambelana neegophe zokufunxa zeklorofili a kunye ne-b ezahlulwe kwityhubhu yovavanyo. Siyazi namhlanje ukuba onke amaza okukhanya kuluhlu lwePAR aluncedo ekuqhubeni iphotosynthesis. Akuthandabuzeki ukuba i-spectrum ibalulekile, kodwa inxulumene ne-morphology yezityalo ezifana nobukhulu kunye nokumila.

Sinokuphembelela ubude kunye neentyatyambo zezityalo ngokutshintsha i-spectrum. Abanye abalimi bahlala behlengahlengisa ukukhanya kunye ne-SPD kuba izityalo zinento efana ne-circadian rhythm, kwaye izityalo ezininzi zineengqungquthela ezizodwa kunye neemfuno "zokuqulunqa".

Eyona ndibaniselwano ebomvu nebhlowu isenokuba ilungile kwimifuno enamagqabi efana neletisi. Kodwa wathi kwakhona ukuba izityalo eneentyatyambo, kuquka iitumato, ukuqina unamandla ngaphezu spectrum ekhethekileyo, 90% yamandla kwisibane soxinzelelo oluphezulu sodium kwindawo tyheli, kunye lumens kwizityalo intyatyambo izibane horticultural (lm. ), lux (lx) Kwaye ukusebenza kusenokuba kuchaneka ngakumbi kune-PAR-centric metrics.

Iingcali zisebenzisa i-90% ye-phosphor-eguqulelwe ii-LED ezimhlophe kwii-luminaires zazo, kunye nezinye ezibomvu okanye ezibomvu ze-LED, kunye nokukhanya okumhlophe kwe-LED okusekelwe kwi-blue kunika onke amandla aluhlaza afunekayo kwimveliso efanelekileyo.