Shading coefficient ntawm U-shaped iav
Raws li lub npe implies, nws yog lub peev xwm ntawm iav los thaiv los yog tiv thaiv lub hnub ci zog. Hauv lus Askiv, Shading Coefficient yog abbreviated li Sc. Hauv kuv lub teb chaws GB / T2680, nws yog hu ua shading coefficient, abbreviated li Se. Qhov piv ntawm hnub ci hluav taws xob mus rau pob tshab tiaj tus iav.
Qhov me me ntawm cov shading coefficient, qhov ua tau zoo ntawm kev thaiv lub hnub ci thiab cua sov los ntawm qhov projecting sab hauv tsev. Raws li cov kev xav tau rau kev txuag hluav taws xob hauv cov tsev tau nce siab dua thiab siab dua, hais txog cov iav vaj tsev, qhov tseem ceeb tshaj plaws yog shading (shading) coefficient Sc (lossis Se) thiab cov cua kub hloov coefficient K tus nqi (lossis U tus nqi).
Lub shading coefficient ntawm cov iav zoo tib yam yog qhov siab, ?s yog hais txog 0.9, yog li nws yog ib qho tsim nyog yuav tsum tau ua cov txheej txheem txheej txheej ntawm cov iav, xws li cov iav iav, cov iav qis, thiab lwm yam. Nws yog ib qho ua tau kom txo tau qhov system shading, yog li kuv yuav tsis piav qhia ntawm no.
Muaj ob peb lub tswv yim yuav tsum nco ntsoov txog lub shading coefficient: lub shading coefficient tsis tsuas yog muaj hnub ci (300nm-2500}nm spectrum nkag mus rau hauv lub khob rau hauv chav tsev, tab sis kuj suav nrog lub zog ntawm qhov hloov hluav taws xob theem nrab ntawm lub khob. Piv txwv li. , qhov ncaj qha tshav ntuj kis ntawm ib daim iav xim av yog 50 feem pua , thaum lub hnub tag nrho transmittance yog 63 feem pua, yog li qhov ntxiv 13 feem pua yog cov hluav taws xob theem nrab absorbed los ntawm iav.
Qhov thib ob, lub shading coefficient ntawm ib lub iav yog 0.5. Nws tsis tuaj yeem xav tias lub iav tuaj yeem tso 50 feem pua ntawm lub hnub tshav kub nkag mus rau hauv chav. Nws yuav tsum nkag siab tias lub hnub tshav kub uas lub iav tuaj yeem xa tawm yog 50 feem pua ntawm cov cua sov kis los ntawm tus qauv 3 hli dawb iav.
Qhov thib peb yog hais txog cov nqe lus piv txwv. Peb hu rau tus nqi ntawm lub hnub ci transmittance ntawm tus qauv 3 hli dawb iav lub taub hau piv. Tus nqi hauv kuv lub tebchaws yog 0.889, thaum tus nqi thoob ntiaj teb yog 0.87. Nws zoo nkaus li tias qhov sib txawv no tsis loj heev, tab sis thaum muab piv nrog Yuav tsum muaj kev pom zoo thaum txawv teb chaws kev tsim kho kev koom tes. Piv txwv Kev suav ntawm shading coefficient Sc=solar heat gain coefficient (SHGC) / heading ratio. Thaum SHGC yog 0.818, lub teb chaws roj zaus {tus nqi yog 0.92, thaum xam txawv teb chaws? {qhov tshwm sim yog 0.94.
Nws kuj tseem yuav tsum tau nkag siab txog lub hnub ci hluav taws xob nce coefficient SHGC: (tseem hu ua tag nrho cov hnub ci xa hluav taws xob, qhov kub nce siab, g tus nqi). Nws txhais tau hais tias nyob rau hauv tib yam kev mob, lub hnub ci hluav taws xob hluav taws xob nkag mus rau hauv chav los ntawm iav. Qhov qhib ntawm tib qhov loj tab sis tsis muaj iav nkag mus rau hauv chav. Qhov piv ntawm hnub ci zog thiab cua sov muaj qhov kev daws teeb meem no? Peb tuaj yeem nkag siab qhov shading factor yog txhais.
