EMC yog dab tsi thiab vim li cas nws tseem ceeb rau cov neeg uas nquag siv ntoo?
Txhais EMC
Lo lus 'EMC' yog lub ntsiab lus rau Equilibrium Moisture Content. Lo lus no feem ntau siv rau "hygroscopic" cov ntaub ntawv, xws li ntoo. Lo lus 'hygroscopicity' yog hais txog cov khoom uas nqus los yog tso cov dej noo los ntawm huab cua kom txog thaum nws ncav cuag qhov sib npaug nrog ib puag ncig ib puag ncig.
Rau kev lag luam woodworking, ntsuas cov ntsiab lus noo noo yog txhais raws li lub ntsiab lus ntawm cov ntoo tsis nqus dej noo lossis tso tawm rau hauv huab cua ib puag ncig. Lub sijhawm no, nws tau hais tias cov khoom tau mus txog qhov sib npaug nrog cov cua.
Yog li, vim li cas EMC tseem ceeb rau cov kws ntoo, cov neeg cog lus hauv pem teb, thiab cov kws kho mob?
Vim li cas EMC tseem ceeb
Rau cov neeg uas nquag siv cov khoom ntoo, muaj ntau qhov laj thawj yog vim li cas nws tseem ceeb heev kom paub tias cov ntoo ua tau raws li nws cov EMC, uas yuav cuam tshuam los ntawm qhov nruab nrab noo noo ntawm thaj chaw uas cov ntoo nyob. Siv.
Ua ntej, thaum ntoo absorbs los yog tso dej noo, nws nthuav los yog cog lus. Qhov dej nqus los yog tso tawm ntau dua, qhov loj dua qhov nthuav dav / kev cog lus ntawm cov khoom ntoo.
Piv txwv li, xav tias koj tab tom txhim kho cov txheej txheem ntoo hauv pem teb ntawm qhov chaw tsim kho, nrog qhov nruab nrab ntawm cov dej noo ntawm 11 feem pua, qhia qhov chaw ntub dej. Txawm li cas los xij, kev hloov pauv thawj zaug ntawm cov rooj ntoo ntoo rau thaj chaw uas muaj qhov nruab nrab noo noo ntawm 6 feem pua hais tias ib puag ncig qhuav.
Thaum raug rau ib puag ncig "humid", lub rooj tsavxwm ntoo yuav pib nqus dej noo los ntawm huab cua thiab nthuav me ntsis. Qhov no tej zaum yuav ua rau cov ntoo boards ntsia tau pib cupping los yog warping, vim lawv nthuav dav thawb lwm cov ntoo boards - ua rau puas tsuaj rau hauv pem teb thiab ua rau nws cov tsos.
Txheeb xyuas qhov nruab nrab ntawm cov dej noo ntawm EMC thiab cov qauv / cheeb tsam hauv cov ntoo
Yog li, koj yuav kuaj EMC ntawm ntoo li cas? Ib txoj hauv kev zoo yog txhawm rau txheeb xyuas qhov feem pua MC ntawm ntoo ntau zaus hauv ob peb hnub hauv qhov chaw teeb tsa. Siv lub ntsuas dej noo ntawm cov ntoo, nyeem cov dej noo ntawm cov ntoo txhua ob peb teev kom txog thaum feem pua MC nyeem ntawv tsis hloov.
Raws li cov ntsiab lus noo noo ntawm cov ntoo, qhov kub thiab txias ntawm qhov chaw tshiab, thiab qhov txheeb ze av noo ntawm thaj chaw, nws yuav siv sij hawm ob peb hnub rau cov ntoo kom hloov mus rau qhov chaw tshwj xeeb. Feem ntau hais lus, qhov tseem ceeb dua qhov sib txawv ntawm cov dej noo ntawm cov ntoo thiab nws cov ntsiab lus EMC, nws yuav siv sij hawm ntev dua kom hloov mus rau ib puag ncig.
Tam sim no, tej zaum koj yuav xav paub yuav ua li cas txiav txim siab qhov nruab nrab ntawm cov dej hauv cheeb tsam. Yog tias koj saib hauv daim duab qhia chaw hauv Tebchaws Meskas no, koj tuaj yeem pom tias qhov nruab nrab cov dej hauv feem ntau ntawm Tebchaws Meskas yog 8 feem pua, thaum cov dej nruab nrab ntawm qee qhov chaw ntug dej hiav txwv yog 11 feem pua, thaum cov cheeb tsam qhuav qhuav. ze rau 6 feem pua.
Txawm hais tias qhov no tuaj yeem ua rau koj lub tswv yim ntxhib ntawm qhov yuav tshwm sim, nws yuav tsim nyog kom tau txais cov ntaub ntawv ntxaws ntxiv los ntawm kev ntsuas RH ntawm thaj chaw uas koj tau teeb tsa ntoo.
Txhawm rau kom tau txais qhov txheeb ze av noo (RH) nyeem ntawv, koj xav tau lub ntsuas kub thiab av noo uas tuaj yeem ntsuas qhov ntsuas kub thiab av noo hauv qhov chaw ua haujlwm loj. RH nyeem ntawv koj tau txais los ntawm hygrometer tuaj yeem pab koj nkag siab tias EMC yuav tsum yog dab tsi rau cov khoom ntoo ntawm qhov chaw.
Piv txwv li, yog tias koj qhov kev nyeem ntawv RH nyob nruab nrab ntawm 58 feem pua thiab 63 feem pua RH, ces koj qhov nruab nrab cov dej noo yog kwv yees li 11 feem pua.
