Theem hloov cov khoom siv hluav taws xob cia ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev siv hluav taws xob thiab siv lub zog tauj dua tshiab. Nyob rau hauv xyoo tas los no, cov ntaub ntawv hloov pauv theem (PCM) rau kev khaws cia hluav taws xob thiab kev tswj xyuas thermal hauv cov khoom siv thiab cov tsev tau raug tshawb fawb ntau. Txawm li cas los xij, feem ntau ntawm PCMs tau muab los ntawm cov roj fossil -raws li cov khoom lag luam xws li paraffin wax, thiab PCMs nyoos ntsib teeb meem nrog rau kev xau thiab kev ua haujlwm tsawg. Cov ntaub ntawv encapsulation xws li nthuav graphite, graphene, thiab microcapsules feem ntau yog ua haujlwm rau PCM ntim. Feem ntau ntawm cov ntaub ntawv encapsulation no yog los ntawm cov roj av derivatives, uas muaj cov txheej txheem kev npaj nyuaj, cov nqi siab, thiab muaj kuab paug loj.
Lub caij no, lub zog biomass suav rau 10% -14% ntawm kev siv hluav taws xob thoob ntiaj teb, ua lub zog loj hauv ntiaj teb thiab ib qho kev lees paub thoob ntiaj teb xoom- carbon tauj dua tshiab. Cov ntaub ntawv biomass nthuav tawm qhov zoo nrog rau lub peev xwm adsorption muaj zog, muaj ntau, tus nqi qis, thiab kev phooj ywg ib puag ncig. Leveraging lub morphology-stabilizing cov txiaj ntsig ntawm biomass- tau txais cov pa roj carbon activated, fabricated PCMs tuaj yeem khaws ntau lub zog thermal thaum lub sij hawm hloov pauv, tswj qhov kub thiab txias nyob rau hauv qhov chaw zoo kom ua tiav lub zog -txuag thiab emission- txo cov teebmeem. Yog li ntawd, tshawb nrhiav biomass txuas ntxiv dua tshiab{10}}cov ntaub ntawv raws li thiab tsim cov bio{11}}cov khoom siv PCMs sawv cev rau yav tom ntej hauv kev lag luam.
Hais txog kev xaiv cov khoom siv, bio-raws li cov ntaub ntawv ntxeem tau- nrog rau lawv cov nqi qis, ib puag ncig kev sib raug zoo, thiab kev siv dav dav - tuaj yeem ua haujlwm zoo los pab txhawb cov ntaub ntawv los npaj cov duab- ruaj khov bio-raws li PCMs. Cov ntaub ntawv txhawb nqa feem ntau rau cov PCMs sib xyaw yog muab los ntawm cov roj av derivatives, ntsib cov teeb meem xws li cov txheej txheem npaj nyuaj, cov nqi siab, thiab cov pa phem hnyav. Muab qhov tsis txaus ntawm fossil fuels thiab kev txhawj xeeb ntawm ib puag ncig, bio-raws li cov ntaub ntawv txhawb nqa, vim lawv cov biodegradability thiab rov ua dua tshiab, nthuav tawm cov kev daws teeb meem thiab qhov kev hloov tsis tau. Cov biorenewable bio-raws li cov ntaub ntawv tuaj yeem tsim los ntawm cov nroj tsuag, tsiaj txhu, thiab kab mob. Cov ntaub ntawv raws li natural bio-cov qauv ntxeem tau yooj yim rau PCM adsorption thiab ua kom yooj yim rau kev npaj cov duab{12}}PCMs ruaj khov. Kev siv bio-raws li cov peev txheej sib haum nrog cov tswv yim kev loj hlob ntsuab thiab muaj txiaj ntsig zoo.
Bio-raws li cov ntaub ntawv feem ntau muaj cov nplua nuj carbon; los ntawm carbonization thiab kev ua haujlwm ntxiv, lawv cov qauv ntxeem tau tuaj yeem kho dua tshiab. Hauv bio-raws li cov ntaub ntawv nrog kev sib txuas ntawm cov ntxeem tau sib txuas, hla- cov kev sib txuas cov pa roj carbon monoxide muab txoj hauv kev thermally conductive, thaum cov qauv ntxeem tau muab spatial cia rau PCMs. Kev siv bio- cov ntaub ntawv raws li txo qis kev cia siab ntawm roj av rau qee yam.
Cov ntaub ntawv txhawb nqa biomass tau siv dav hauv kev npaj cov khoom siv ua haujlwm zoo vim lawv muaj ntau, tus nqi qis, ib puag ncig tus phooj ywg, thiab rov ua dua tshiab. Biomass PCMs nthuav tawm cov txiaj ntsig zoo xws li tsis yog - toxicity, tsis yog -corrosiveness, thiab biocompatibility zoo heev. Composite biomass PCMs qhia cov txheej txheem kev npaj yooj yim, kev ua tau zoo dua, thiab tswj tau qhov kub thiab txias. Txawm li cas los xij, tam sim no kev tshawb fawb thiab kev tsim cov khoom siv biomass tseem tsis txaus. Kev tshawb nrhiav txuas ntxiv ntawm biomass thiab nws cov ntaub ntawv derivative, nrog rau cov txheej txheem tshiab los npaj cov khoom siv biomass PCM yog qhov tseem ceeb.
Yav tom ntej Prospects:
Txawm hais tias kev ua tiav hauv cov theem sib xyaw hloov pauv cov khoom siv hluav taws xob khaws cia- siv cov khoom siv biomass ntau, kev ua tau zoo ntawm biomass - tau los ntawm PCMs sib xyaw, thiab cov peev txheej siv dav dav - muaj ntau yam kev nyuaj.
(1) Cov dej xau thaum lub sij hawm muaj zog-kua theem hloov pauv: Kev tshawb fawb txog cov khoom latent ntawm biomass thiab nws cov derivatives yuav tsum tau txheeb xyuas qhov zoo sib xws thiab tswj cov theem hloov pauv ntawm biomass PCMs.
(2) Cov txheej txheem npaj nyuaj thiab cov nqi siab: Cov txheej txheem kev npaj tshiab rau bio-raws li PCMs yuav tsum tau tsim los txhim kho cov txheej txheem thiab txo cov nqi.
(3) Kev ua haujlwm tsawg thiab kev ua tau zoo: Kev tshawb fawb yuav tsum tsom mus rau kev txiav cov khoom siv biomass PCMs rau ntau yam kev thov, tsim cov khoom siv sib txawv los txhim kho kev ua tau zoo.
