Kev Ua Kom Sov Ntawm Cov Av Nplaum Nthuav Dav: Cov Thermal Conductivity Coefficient Ntawm Cov Av Nplaum Nthuav Dav, Sib Piv Nrog Nthuav Polystyrene Thiab Cov Ntaub Plaub Ntxhia

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2023-12-16 05:41

Nthuav av nplaum los yog, raws li cov neeg hais, "pob zeb me me" yog cov khoom siv ntws dawb uas muaj cov pellets ua los ntawm cov khoom siv txau, raug rho tawm ntawm qhov kub. Cov khoom yog ua los ntawm cov khoom siv av nplaum thiab tsis tsuas yog cov cua sov ua kom sov hauv qee yam xwm txheej, tab sis kuj tseem yog cov khoom siv suab zoo. Cov neeg tsim khoom hais tias thaum kho ib chav, nthuav av nplaum ua tau raws li qhov yuav tsum tau ua (tsis pub cua sov lossis suab nrov dhau los), nws yog qhov yuav tsum tau coj mus rau hauv tus lej tus yam ntxwv ntawm nws.

Lub hauv paus tseem ceeb

Qhov tseeb yog tias rau qhov muaj cua sov tsawg thiab muaj peev xwm kis tau suab, nthuav av nplaum yuav tsum tau muab tso thaum lub sijhawm teeb tsa kom tsis muaj qhov khoob ntawm cov granules uas dhau los ntawm cua sov thiab suab khiav tawm. Thiab qhov xwm txheej no tsis tuaj yeem tsis quav ntsej, txwv tsis pub ntim cov khoom yuav tsis muaj txiaj ntsig. Nws cov qauv yog qhov uas nws tsis tso cai rau cov khoom sib dhos, yog li ntawd, txhawm rau tshem tawm cov voids, koj yuav tsum siv tag nrho peb feem ntawm cov khoom:

• pob zeb yog puag ncig cov ntsiab lus ntawm qhov teeb meem, qhov loj uas txawv ntawm 2 txog 4 cm;
• crushed av nplaum los ntawm cov av nplaum nthuav tawm maj mam zom cov pob zeb, qhov loj ntawm uas yog 12 cm;
• nthuav av nplaum yog ib feem me me zoo li nce mus txog 0.51 cm loj.

Nws cov thermal conductivity ncaj qha nyob ntawm ntau yam ntawm cov khoom siv hauv tsev uas tau hais los saum no. Qhov no yog lub peev xwm ntawm cov khoom siv kom khaws cua sov hauv chav tsev yam tsis cia nws hla dhau phab ntsa lossis txheej txheej rwb thaiv tsev . Txhawm rau tsim kom muaj txheej txheej zoo los ntawm nws, siv ua lub rhaub dej, pob zeb thiab nthuav av nplaum tsoo pob zeb tau sib xyaw, cov voids nruab nrab uas tau ntim nrog cov xuab zeb. Cov cua sov ua kom sov ntawm cov sib xyaw no yog 0.14-0.15 W / (m × K). Qhov sib piv rau qhov sib piv ntawm cov cua sov ua kom sov ua npuas dej nrog cov tuab 5 cm thiab sib npaug rau cov cua sov ua kom sov ntawm cov pob zeb hauv av nrog txheej 12 cm., yog tsawg heev.

Yog tias koj siv ib qho ntawm ntau yam saum toj no rau rwb thaiv tsev, tom qab ntawd qhov ntsuas ntawm nws cov cua sov ua kom sov yuav nyob ntawm 0.1 txog 0.18 W / (m × K). Yog li ntawd, rau kev rwb thaiv tsev zoo, sib xyaw ntawm txhua qhov ntau yam tso cai tau siv.

Coefficient

Muaj kev xav tias nthuav av nplaum tau dav siv los ua rwb thaiv tsev vim nws cov nqi qis. Qhov tseeb, yog tias peb sib piv tus nqi ntawm ib 'meter' ntawm cubic claydite nrog tus nqi ntawm lwm qhov rwb thaiv tsev, tom qab ntawd nws tus nqi yuav qis dua. Tab sis lub peculiarity ntawm cov kev suav no nyob hauv tus yam ntxwv ntawm cov khoom. Qhov tseeb yog tias cov av nplaum nthuav dav rau rwb thaiv tsev yuav xav tau ntau zaus ntau dua, piv txwv li, ua npuas dej rwb thaiv tsev. Yog li, nws hloov tawm tias nws yuav tsis tuaj yeem txuag tus nqi ntawm cov av nplaum nthuav dav. Ib qho ntxiv, tus lej ntawm lwm cov yam ntxwv muaj nyob hauv cov khoom.

• Nws muaj qhov tshwj xeeb ntawm lub suab rwb thaiv tsev, qhov ua tau zoo ntawm uas qis dua, piv txwv li, ntawm cov paj rwb.
• Qhov hnyav me me ntawm cov av nplaum nthuav dav tsis khi rau nws qhov ntim, uas yuav tsum tau coj mus rau hauv tus account thaum tiv thaiv hauv av nrog cov khoom. Qhov tseeb yog txhawm rau tiv thaiv tag nrho chav tsev, koj yuav xav tau ntau yam khoom uas cov pob zeb yuav tiv taus, thiab hauv pem teb ntoo yuav tsis tiv taus. Cov tuab ntawm cov laug cam hauv cov xwm txheej no yuav tsum yog yam tsawg 25 hli.
• Tsis yog txhua yam yooj yim heev nrog lub zog ntawm nthuav av nplaum. Yog tias koj nqis rau ob peb lub pob zeb tawg rau hauv av, lawv yuav tawg. Thiab yog tias koj taug kev hauv av, uas tau npog nrog txheej nyias nyias, cov pob zeb yuav tsis deform.

Nws hloov tawm tias cov khoom siv nws tus kheej tsis muaj lub zog thiab feem pua ntawm rwb thaiv tsev. Qhov zoo ntawm cov cim ntsuas tau txhim kho nrog kev nce hauv cov txheej ntau.

Sib piv nrog lwm cov ntaub ntawv

Tseem, nthuav av nplaum muaj tus lej zoo, ua tsaug uas nws tau nquag siv hauv kev tsim kho. Piv txwv li, sib piv rau cov tsiaj txhu tsiaj txhu, uas yog cov dej ntau dhau lub sijhawm, nthuav av nplaum, nrog siv kom raug, tsis plam nws cov duab qub rau li 60 xyoo . Kev ua haujlwm raug txhais tau tias ua raws nws cov yam ntxwv thaum ua haujlwm nrog cov khoom (piv txwv li, koj yuav tsum tsis txhob taug kev ntawm cov av nplaum nthuav dav, npog nrog txheej nyias). Hauv kev sib piv nrog cov ntaub ntawv los ntawm nthuav polystyrene, nthuav av nplaum muaj lub siab tiv thaiv hluav taws, thiab tseem muaj qhov tsis kam tiv taus qhov kub hloov pauv. Nws yuav tsum tau sau tseg tias nthuav polystyrene tsis muaj lub zog zoo ib yam li nthuav av nplaum. Nws sai sai thiab deforms.

Dhau li, cov ntaub ntawv no tau raug rhuav tshem nyob rau hauv cov xim thiab cov kua roj vanish, thiab nws kuj tseem tsis tso cai rau huab cua hla mus tau zoo, uas feem ntau ua rau tsis txaus ntseeg . Cov khoom siv tsis ntshai qhov siab heev ntawm sab qaum teb - nws muaj peev xwm tiv taus txog 300 qhov hloov pauv kub. Cov yam ntxwv no tau dhau los ua qhov laj thawj yog vim li cas cov khoom siv tau ntxiv rau hauv cov cement mortars txhawm rau txhim kho cov phaj screed, uas tseem qee qhov tshem tawm qhov ua kom txias nkag los ntawm sab nraud thiab txhim kho suab rwb thaiv tsev. Cement mortars diluted nrog nthuav av nplaum muaj lub zog siab tshaj plaws.

Dhau li nthuav av nplaum, tsis zoo li yas, tsis tso cov co toxins thiab muaj ntxhiab tsw thaum ua kom sov . Ib qho ntxiv, vim yog qhov yuav tshwm sim los, nthuav cov av nplaum thiab cov nas (nas thiab nas) hla dhau. Thiab tseem pom cov pwm thiab ntau hom kab mob ntawm nws tsis yog yam ntxwv ntawm cov khoom siv. Ntawm lwm yam, ua haujlwm nrog nthuav av nplaum tsis ua rau muaj teeb meem txawm tias pib rau hauv kev tsim kho kev lag luam. Nws yog qhov ua tau kom tsaug zog nrog lawv yam tsis muaj teeb meem thaj tsam ntawm ib qho nyuaj. Nws hloov tawm tias nthuav av nplaum, zoo li cov ntaub plaub ntxhia lossis nthuav polystyrene, muaj tus lej ntawm nws qhov zoo thiab qhov tsis zoo. Thaum ntsib kev xaiv cov khoom, ib tus tsis tuaj yeem hais tias ib yam khoom phem dua thiab lwm qhov zoo dua. Qhov kev xaiv yuav nyob ntawm qhov nyiam ntawm tus tswv (peb tab tom tham txog qhov xav tau thiab muaj peev xwm ua haujlwm nrog cov khoom siv), thiab qeb nqe yuav tseem ua lub luag haujlwm tseem ceeb.