Keeb kwm ntawm kev siv lub hnub ci thermal ntev dua li cov kev siv photovoltaic, cov cua sov dej hnub ci lag luam tau tshwm sim hauv xyoo 1891. Cov kev siv lub hnub ci thermal yog los ntawm kev nqus lub hnub ci, lub zog lub teeb mus rau hauv lub zog thermal tom qab siv ncaj qha lossis khaws cia kuj tuaj yeem hloov mus ua hluav taws xob los ntawm kev cua sov cov tshuab hluav taws xob uas tsav los ntawm cov pa. Cov kev siv lub hnub ci thermal tuaj yeem muab faib ua peb pawg raws li qhov kub thiab txias: cov kev siv qhov kub qis (<100C), feem ntau siv rau kev ua kom sov pas dej da dej, cua sov ua ntej cua sov, thiab lwm yam, cov kev siv qhov kub nruab nrab (100 ~ 400C), feem ntau siv rau dej kub hauv tsev thiab chav sov, kev ua kom sov hauv kev lag luam, thiab lwm yam; cov kev siv qhov kub siab (>400C), feem ntau siv rau kev ua kom sov hauv kev lag luam, kev tsim hluav taws xob thermal, thiab lwm yam. Nrog rau kev txhawb nqa ntawm lub tshuab hluav taws xob collector, kev tiv taus qhov kub nruab nrab thiab siab thiab cov khoom siv photothermal uas tiv taus ib puag ncig tau dhau los ua qhov tseem ceeb.
Cov thev naus laus zis nyias nyias kuj tseem ua lub luag haujlwm tseem ceeb hauv kev siv thermal hnub ci. Vim tias qhov ceev ntawm lub zog hnub ci qis ntawm qhov chaw (kwv yees li 1kW / m² thaum tav su, cov neeg sau khoom xav tau thaj chaw loj los sau lub zog hnub ci. Qhov sib piv ntawm thaj chaw loj / tuab ntawm cov yeeb yaj kiab photothermal hnub ci ua rau cov yeeb yaj kiab uas yooj yim rau kev laus, uas cuam tshuam rau lub neej ntawm cov khoom siv photothermal hnub ci. Cov kev cai tseem ceeb rau cov yeeb yaj kiab thermal hnub ci yog peb npaug: kev siv hluav taws xob zoo, lub neej ntev thiab kev lag luam. Kev xaiv spectral yog siv los ntsuas kev siv hluav taws xob ntawm cov yeeb yaj kiab thermal hnub ci. Ib zaj yeeb yaj kiab thermal hnub ci zoo yuav tsum muaj kev nqus zoo heev ntawm ntau yam kab hluav taws xob hnub ci thiab kev tso tawm thermal tsawg. a / e coefficient yog siv los ntsuas qhov kev xaiv spectral ntawm zaj yeeb yaj kiab, qhov twg a sawv cev rau kev nqus hnub ci thiab e sawv cev rau thermal emissivity. Kev ua haujlwm thermal ntawm cov yeeb yaj kiab sib txawv sib txawv heev. Cov yeeb yaj kiab nqus cua sov thaum ntxov muaj cov txheej dub ntawm cov ntawv ci hlau, uas poob txog li 45 feem pua ntawm cov hluav taws xob ntev-wavelength tso tawm thaum nws nqus cua sov thiab sov so, ua rau lub zog hnub ci sau tsuas yog 50 feem pua. Kev ua haujlwm ntawm cov yeeb yaj kiab photothermal tuaj yeem txhim kho tau zoo los ntawm kev siv spectrally Cov ntaub ntawv nyias nyias xaiv xws li platinum hlau, chromium, lossis carbides thiab nitrides ntawm qee cov hlau hloov pauv. Cov yeeb yaj kiab Photothermal feem ntau yog npaj los ntawm CVD lossis magnetron sputtering, thiab qhov thermal emissivity tuaj yeem txo qis kom tsawg li 15 feem pua rau cov yeeb yaj kiab nrog kev ua haujlwm ntawm cov khoom sau txog li 80 feem pua. Cov yeeb yaj kiab xaiv spectrally zoo tagnrho muaj cov coefficient nqus ntawm ntau dua 0.98 hauv cov kab tseem ceeb ntawm lub hnub ci spectrum (<3um), thiab cov coefficient thermal radiation tsawg dua 0.05 hauv 500C thermal radiation band (>3um), thiab yog cov qauv thiab kev ua tau zoo-ruaj khov ntawm 500 ° C hauv huab cua.
– Tsab xov xwm no yog luam tawm los ntawmChaw tsim khoom siv nqus tsev txheejGuangdong Zhenhua Technology.
Lub sijhawm tshaj tawm: Lub Yim Hli-05-2023