Agrivoltaics Tswj lossis Txhim Kho Cov Khoom Noj Zoo, Kev Tshawb Nrhiav

Ib pab neeg tshawb fawb los ntawm University of Minnesota hauv Tebchaws Meskas tau tshawb xyuas qhov cuam tshuam ntawm agrivoltaics arrays ntawm kev tawm los thiab kev noj zaub mov zoo ntawm cov nyom thiab legumes rau grazing nyuj nyuj.

"Qhov kev tshawb fawb no yog ib qho ntawm thawj qhov kev ntsuam xyuas cov tsiaj txhu biomass thiab cov khoom noj zoo ntawm ntau hom nyom thiab cov qoob loo cog qoob loo nyob rau hauv cov qauv agrivoltaic solar array sib txawv hauv cov khoom noj siv mis nyuj," tus sau Bradley J. Heins hais rau pv magazine. "Peb xav txiav txim siab seb lub hnub ci siv zog li cas thiab lub hnub ci vaj huam sib luag teeb tsa cuam tshuam rau cov txiaj ntsig thiab kev noj zaub mov zoo rau cov zaub mov. Peb xav tau kev tshawb fawb ntxiv txog seb yuav loj hlob li cas nyob rau hauv lub hnub ci vaj huam sib luag, thiab qhov no yog qee qhov kev tshawb fawb thaum ntxov uas muab kev taw qhia rau cov neeg ua liaj ua teb thiab cov neeg tsim khoom hnub ci ntawm kev cog qoob loo. "

Nws hais ntxiv tias nws pab neeg tab tom npaj yuav nthuav dav cov kev tshawb fawb nyob rau lub caij ntuj sov tom ntej thiab tshawb nrhiav cov hnub ci vaj huam sib luag ntsug. "Peb yuav sib piv cov no mus rau ib txwm siv hauv av mount hnub ci kev teeb tsa rau nyuj grazing. Peb tab tom yuav saib tiag tiag ntawm kev lag luam ntawm cov teeb meem hnub ci sib txawv," nws hais. "Peb kuj tseem yuav soj ntsuam ntev -lub sij hawm tsiaj ua haujlwm thiab kev coj noj coj ua hauv agrivoltaic systems."

Cov qoob loo tau cog rau hauv qab 30 kW PV qhov chaw, 50 kW PV qhov chaw, thiab ib qho chaw tswj hwm hauv tsev kawm ntawv thaj tsam.

Lub 30 kW hnub ci qhov chaw tau kho hnub ci arrays mounted ntawm 35 degrees sab qab teb, thaum lub 50 kW qhov chaw yog square-zoo li tus, nrog ib tug ca - sab saum toj array siv reflectors. Hauv ob qhov chaw, cov panels tau mounted 2.5 mus rau 3.0 m tawm hauv av. Tsis muaj cov nyuj tau tso cai rau noj ib qho ntawm cov phiaj xwm kev sim thaum lub sijhawm kawm, uas tau ua txij lub Tsib Hlis 2022 txog Lub Cuaj Hli 2022 thiab txij lub Tsib Hlis 2023 txog Lub Cuaj Hli 2023.

Forage qoob loo suav nrog alfalfa, teb peas, meadow fescue, orchardgrass, liab clover, xim av midrib sorghum-sudan nyom, thiab dawb clover. Tsis tas li ntawd, cov qoob loo muaj xws li peb cov nyom- thiab- legume sib xyaw nrog alfalfa, liab clover, los yog clover dawb. Cov qauv tsiaj txhu raug txiav peb zaug hauv ib xyoos, thaum cov tsiaj ncav cuag li 25-35 cm hauv qhov siab, uas sib haum rau qhov siab pom zoo rau lactating nyuj.

Cov qauv tau qhuav ntawm 60 C rau 99 teev los txiav txim siab cov teeb meem qhuav, thiab ob 2 cov qauv ntawm txhua daim phiaj raug xaiv xaiv rau botanical muaj pes tsawg leeg. Tom qab ntawd lawv raug xa mus rau lub chaw kuaj mob, qhov chaw uas lawv tau txheeb xyuas cov protein tsis zoo, cov tshuaj ntxuav tes tsis huv, cov kua qaub detergent fiber ntau, cov ntxhia hauv cov ntsiab lus, thiab tag nrho -tract neutral detergent fiber digestibility (TTNDFD).

Kev tsom xam pom tias cov khoom noj biomass qis dua ntawm 50 kW hnub ci qhov chaw (3,223 kg / ha) dua li ntawm 30 kW hnub ci qhov chaw (8,968 kg / ha) thiab tswj pasture (9,987 kg / ha). Lub 50 kW forages muaj ntau dua crude protein nyob rau hauv qhuav teeb meem, ntawm 23.8%, piv nrog rau 20.1% ntawm lub 30 kW site thiab 18.2% ntawm kev tswj pasture. Lub 50 kW forages kuj muaj ntau dua TTNDFD, ntawm 54.4%, piv nrog 52.3% ntawm qhov chaw 30 kW thiab 49.1% ntawm kev tswj pasture.

Heins tau hais tias "Cov txiaj ntsig tau pom tias cov zaub mov zoo tuaj yeem khaws cia lossis txawm tias txhim kho hauv agrivoltaic systems," Heins xaus lus. "Peb tsis paub tiag tiag yuav xav li cas. Tab sis peb pom cov nyom - piv txwv li, orchardgrass thiab meadow fescue - kom muaj biomass ntau lawm nyob rau hauv lub hnub ci vaj huam sib luag piv rau kev loj hlob nyob rau hauv ib txwm pasture."

Cov txiaj ntsig tau tshwm sim hauv "Agrivoltaic arrays thiab cov teebmeem ntawm cov tsiaj txhu biomass thiab cov txiaj ntsig zoo ntawm cov nyom thiab legumes rau grazing nyuj nyuj," luam tawm hauv JDS Communications. Cov kws tshawb fawb los ntawm University of Minnesota thiab University of New Hampshire tau koom nrog kev tshawb fawb.