Mu rwego rwinyubako zikoresha ingufu, "U-agaciro" mubisanzwe yerekeza ku bushyuhe bwumuriro bwibintu cyangwa ibice, bizwi kandi nka U-factor cyangwa U-agaciro, ni igipimo cyubushobozi bwibikoresho byo kwimura ubushyuhe kuri buri gice cyubushyuhe butandukanye kubice byigihe binyuze mubice byubuso, kandi mubisanzwe bigaragarira mubice bya W / m²-K (watts kuri metero kare kuri kelvin).
Hasi U-gaciro, niko arushaho kubika ibikoresho kandi bikarushaho kuba byiza guhagarika ihererekanyabubasha, bityo bikazamura ingufu zinyubako. Mu gishushanyo mbonera cyubaka ingufu, guhitamo ibikoresho bifite U-gaciro ni ngombwa kugirango ugabanye ingufu zo gushyushya no gukonjesha.
Nubwo U-agaciro (cyangwa U-kintu) ari rusange, U-gaciro irashobora kugaragarira mubice bitandukanye. Mu bihugu byinshi, U-agaciro igaragarira mu bice bya SI.
Mu bihugu byinshi, U-agaciro kagaragazwa nkibice bya SI,
W / (m2⋅K):
Muri Reta zunzubumwe za Amerika, U-gaciro igaragazwa nkibice bishushe byabongereza (Btu) kuri metero kare-dogere ya dogere Fahrenheit.
Btu / (h⋅ft2⋅ ° F)
Muri iyi nyandiko yose, U-indangagaciro zigaragazwa nka SI keretse bivuzwe ukundi. Guhindura SI mumico gakondo yo muri Amerika, gabanya na 5.678.
Ubushyuhe bwumuriro buri hasi mubice bikingiwe neza byinyubako kandi hejuru mubice bitagabanijwe neza. u-indangagaciro uzirikana igihombo bitewe nimirasire yubushyuhe, ubushyuhe, hamwe nubushyuhe.
Nubwo ibice byubushyuhe bwumuriro ari kimwe na coefficient zoherejwe nubushyuhe, ubushyuhe bwumuriro buratandukanye kuberako coefficient zoherejwe nubushyuhe zikoreshwa gusa mugusobanura ihererekanyabubasha ryamazi, mugihe ubushyuhe bwumuriro bukoreshwa mukworohereza ibigereranyo hamwe nuburyo butandukanye bwo kurwanya ubushyuhe.
Byasobanuwe nuburinganire bukurikira:
. , na A ni agace muri metero kare.
Ikwirakwizwa ryumuriro winkuta nyinshi nigisenge kirashobora kubarwa ukoresheje ISO 6946 keretse niba hari ibyuma byikiraro byicyuma, mugihe ISO 10211 ishobora gukoreshwa. Kubutaka bwinshi, ISO 13370 irashobora gukoreshwa. Kuri Windows nyinshi, itumanaho ryumuriro rirashobora kubarwa ukoresheje ISO 10077 cyangwa ISO 15099.
ISO 9869 isobanura uburyo bwo kugerageza gupima ubushyuhe bwumuriro wimiterere. Guhitamo ibikoresho hamwe nubwiza bwubwubatsi bigira uruhare runini kumikorere ya idirishya. Gushiraho no gufunga inshuro ebyiri idirishya rya sisitemu nukuri kwintege nke zokwirinda idirishya.
Igihe cyo kohereza: Kanama-15-2024