Kodi Water Vapor Permeability (WVP) ya zinthu zotsekemera ndi chiyani?

Ngati mukugwira ntchito yomanga kapena mukukonzekera kutsekereza nyumba, mwina mwakumanapo ndi mawu akuti vapor permeability (WVP). Koma WVP ndi chiyani kwenikweni? Nchifukwa chiyani kuli kofunika posankha zipangizo zotetezera?

Water vapor permeability (WVP) ndi muyeso wa kuthekera kwa chinthu kulola kuyenda kwa nthunzi wamadzi. WVP ndi chinthu chofunikira kuchiganizira pankhani ya kutchova njuga chifukwa imakhudza magwiridwe antchito onse achitetezo posunga malo omasuka komanso osapatsa mphamvu m'nyumba.

Zipangizo zodziyimira pawokha zokhala ndi WVP yocheperako zitha kuletsa kuchulukira kwa chinyezi mkati mwa makoma ndi madenga. Izi ndizofunikira chifukwa chinyezi chambiri chingayambitse nkhungu ndikuwonongeka kwa nthawi. Kumbali inayi, zida zokhala ndi WVP yapamwamba zimalola chinyezi chochulukirapo, chomwe chingakhale chopindulitsa nthawi zina pomwe chinyezi chimafunikira.

Kotero, momwe mungadziwire WVP ya zipangizo zotetezera? WVP yazinthu nthawi zambiri imayesedwa mu magalamu pa lalikulu mita patsiku (g/m²/tsiku) ndipo imatha kuyesedwa pogwiritsa ntchito njira zokhazikika monga ASTM E96. Mayeserowa amaphatikizapo kuulula zinthuzo kuti zisamayende bwino ndi chinyezi komanso kuyeza kuchuluka kwa mpweya wamadzi womwe umadutsa pachitsanzocho pakapita nthawi.

Posankha zipangizo zotsekera pulojekiti, m'pofunika kuganizira za nyengo ndi zofunikira za nyumbayo. Mwachitsanzo, kumadera ozizira kumene kutentha kumafunika kwambiri chaka chonse, ndikofunika kusankha kusungunula ndi WVP yotsika kuti muteteze kuwonjezereka kwa chinyezi ndi kuwonongeka kwa nyumbayo. Kumbali ina, m'malo otentha komanso amvula, zida zokhala ndi WVP yapamwamba zitha kukhala zokondedwa kuti zithandizire bwino kuwongolera chinyezi ndikuletsa kukhazikika mkati mwakhoma.

Pali mitundu yambiri ya zida zotchingira pamsika, iliyonse ili ndi mawonekedwe ake a WVP. Mwachitsanzo, zida zotchinjiriza thovu monga polyurethane ndi polystyrene nthawi zambiri zimakhala ndi WVP yocheperako, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito kumalo ozizira komanso amvula. Kumbali inayi, ma cellulose ndi fiberglass insulation ali ndi WVP yapamwamba, zomwe zimawapangitsa kukhala oyenerera nyengo yotentha komanso yachinyontho.

Kuphatikiza pa kulingalira kwa nyengo, malo ndi ntchito zotetezera ziyenera kuganiziridwanso. Mwachitsanzo, kutchinjiriza m'chipinda chapansi kapena malo okwawa kungafunike chinthu chokhala ndi WVP yocheperako kuti chinyontho zisalowe pamakoma a maziko. Mosiyana ndi izi, kutchinjiriza kwa chipinda chapamwamba kumatha kupindula ndi zida zokhala ndi WVP yapamwamba pakuwongolera bwino chinyezi komanso kutetezedwa ku condensation.

Pomaliza, madzi a vapor permeability (WVP) ndi chinthu chofunikira kuganizira posankha zida zotchingira ntchito yomanga. Kumvetsetsa mawonekedwe a WVP azinthu zosiyanasiyana komanso momwe zimakhudzira kasamalidwe ka chinyezi komanso magwiridwe antchito onse omanga ndikofunikira kuti m'nyumba mukhale malo omasuka komanso osagwiritsa ntchito mphamvu. Poganizira za nyengo, malo, ndi ntchito yotsekera, mutha kupanga chiganizo mwanzeru pazachitetezo chabwino kwambiri cha polojekiti yanu.