Mapanelo Osungira Zinthu Zozizira a Polyurethane: Cholepheretsa Kusunga Mphamvu cha Unyolo Wozizira

PU ndi PIR polyurethanemalo osungira oziziraMa panelo amadziwika kwambiri ngati zipangizo zotetezera kutentha zomwe zingagwiritsidwe ntchito popanga malo osungiramo zinthu zozizira masiku ano. Kutsika kwa kutentha kwawo komanso kukhazikika kwawo bwino kumawapangitsa kukhala njira yabwino kwambiri yosungiramo zinthu zozizira zapakati ndi zazikulu.

Popeza ma panel a polyurethane agwiritsidwa ntchito kwambiri, njira zamakono zoyendetsera zinthu zozizira zasintha kwambiri momwe zimasungidwira komanso kuchepetsa ndalama zogwirira ntchito. Ma panel awa tsopano akutenga gawo lalikulu pa zomangamanga zozizira zomwe zimasunga mphamvu m'magawo azakudya, mankhwala, ndi mafakitale.

Magwiridwe Abwino Kwambiri Otetezera Kutentha kwa Mapanelo Osungira Zinthu Zozizira a Polyurethane

Ubwino waukulu wa ma panel osungiramo zinthu zozizira a polyurethane uli mu kapangidwe kake ka mkati mwa maselo otsekedwa. Miyezo yamakampani imafuna kuti ma panel a polyurethane apamwamba kwambiri akwaniritse kuchuluka kwa maselo otsekedwa kopitilira 95 peresenti. Chopangira thovu chimapanga ma pores otsekedwa mkati mwa chinthu chachikulu, ndipo ma pores awa amatseka njira zotumizira kutentha. Zotsatira zake, kusinthana kwa kutentha pakati pa mkati ndi kunja kwa malo osungiramo zinthu zozizira kumakhalabe kotsika kwambiri.

Chifukwa cha kuchuluka kwa maselo otsekedwa kumeneku, ma polyurethane panels nthawi zambiri amafika pamlingo woyendetsera kutentha pakati pa 0.018 ndi 0.024 W/m·K. Zipangizo zotetezera kutentha monga ma rock wool boards kapena ma EPS polystyrene panels nthawi zambiri zimawonetsa kuchuluka kwa kutentha pakati pa 0.035 ndi 0.045 W/m·K. Pansi pa zofunikira zomwezo zotetezera kutentha, ma polyurethane panels amatha kukwaniritsa cholinga chake ndi pafupifupi theka la makulidwe a zipangizo wamba. Ubwino uwu umachepetsa mwachindunji kugwiritsa ntchito malo omanga ndikuwonjezera kuchuluka kwa malo osungira.

Mapanelo osungiramo zinthu zozizira a polyurethane amathandizanso kuti kutentha kukhale kolimba komanso kolimba pogwiritsa ntchito mphamvu ya makina kudzera mu kuchuluka kwa zinthu zolamulidwa. Mapanelo apamwamba nthawi zambiri amakhala ndi kuchuluka kwa thovu pakati pa 38 ndi 40 kg/m³. Mtundu uwu umayimira malo abwino kwambiri pakati pa kulimba kwa kapangidwe kake ndi kugwiritsa ntchito bwino kutentha. Kuchuluka kochepa kumafooketsa mphamvu yokakamiza ndikuwonjezera chiopsezo cha kusinthika. Kuchuluka kwambiri kumawonjezera mphamvu ya kutentha ndi mtengo wa zinthu popanda kupereka phindu lofanana.

Mafotokozedwe Aukadaulo ndi Zochitika Zogwiritsira Ntchito

Opanga nthawi zambiri amapanga mapanelo osungiramo zinthu zozizira a polyurethane pomangirira thovu lolimba la polyurethane pakati pa zigawo ziwiri za mapepala achitsulo opakidwa kale. Kapangidwe kameneka kamapereka chitetezo komanso kulimba kwa pamwamba. Kusankha makulidwe a mapanelo kumatsatira malangizo okhwima okhudzana ndi kutentha.

Mapanelo okhala ndi makulidwe a 50 mpaka 100 mm amayenerera malo atsopano osungiramo zinthu opitirira 0°C. Zipinda zosungiramo zinthu zozizira zomwe zimagwira ntchito pafupifupi -18°C nthawi zambiri zimafuna mapanelo okhala ndi makulidwe apakati pa 100 ndi 150 mm. Pa malo osungiramo zinthu oziziritsa mwachangu kapena malo otentha kwambiri osapitirira -25°C, mainjiniya nthawi zambiri amatchula mapanelo okhuthala kuyambira 150 mpaka 200 mm. Mapangidwe awa amatsimikizira kutentha kwamkati kokhazikika komanso kupewa kutaya mphamvu kwambiri.

Mphamvu yokakamiza ikadali chinthu china chofunikira kwambiri pakupanga malo osungiramo zinthu ozizira. Mapanelo ayenera kunyamula katundu wochokera ku mashelufu, ma evaporator, ndi zida zina zoyikidwa. Mapanelo abwino kwambiri osungiramo zinthu ozizira a polyurethane nthawi zambiri amakhala ndi mphamvu yokakamiza yoposa 150 kPa. Mlingo uwu umatsimikizira kudalirika kwa kapangidwe kake kwa nthawi yayitali panthawi yogwira ntchito mosalekeza.

Chitetezo pa moto chimakhudzanso kusankha zinthu. Mapanelo ambiri osungiramo zinthu zozizira a polyurethane amakwaniritsa miyezo ya B1 kapena B2 yolimbana ndi moto. Zipangizo za B1 zimazimitsa zokha mkati mwa masekondi atatu kuchokera pamene moto wachotsedwa. Zipangizo za B2 zimazimitsa zokha mkati mwa masekondi atatu mpaka asanu ndi limodzi. Zinthu zimenezi zimachepetsa kwambiri chiopsezo cha kufalikira kwa moto ndikuwonjezera chitetezo cha malo onse.

Kukhazikika kwa zinthu kumasiyanitsanso mapanelo apamwamba kwambiri. Mapanelo osungiramo zinthu zozizira a polyurethane nthawi zambiri amakhala ndi kuchuluka kwa madzi pansi pa 1 peresenti. Amachitanso bwino pa kutentha kwakukulu kuyambira -60°C mpaka +120°C. Kukhazikika kumeneku kumatsimikizira kuti kutentha kumagwirira ntchito bwino nthawi zonse ngakhale pakakhala zovuta komanso kutentha kumasinthasintha pafupipafupi.

Ubwino wa Kapangidwe: Ukadaulo Wotsimikizika Wolumikizira Lilime ndi Mizere

Ma milatho yozizira ndi chimodzi mwa zinthu zomwe zimawopseza kwambiri kusungirako zinthu zozizira. Ma pulasitiki osungiramo zinthu zozizira amathetsa vutoli kudzera mu njira zolumikizirana zokhwima ndi lilime komanso groove pamodzi ndi njira zomangira zobisika. Machitidwewa amalola ma pulasitiki kuti agwirizane bwino ndikupanga chotenthetsera chosalekeza.

Kapangidwe kameneka kamatsimikizira kuti kutseka kwa msoko kumagwira ntchito bwino kwambiri. Okhazikitsa akawonjezera zingwe zotsekera zaukadaulo ndi zodzaza thovu, kutuluka kwa mpweya ndi kutayika kwa kuzizira pamalumikizidwe kumatsika pang'ono. Pa malo osungira ozizira okhala ndi malo okwana masikweya mita 1,000, mapanelo apamwamba a polyurethane amatha kuchepetsa kugwiritsa ntchito magetsi pachaka ndi pafupifupi 20 mpaka 30 peresenti poyerekeza ndi zipangizo wamba zotetezera kutentha. Kuchepetsa kumeneku kumatanthauza phindu lalikulu lachuma kwa nthawi yayitali komanso kubweza ndalama mwachangu.