I-PU kunye ne-PIR polyurethaneindawo yokugcina ebandayoIiphaneli zaziwa ngokubanzi njengezona zinto zisebenzayo zokukhusela ezikhoyo zokwakha izinto zokugcina ubushushu zanamhlanje. Ukuqhuba kwazo ubushushu obuphantsi kakhulu kunye nozinzo oluhle kakhulu lwesakhiwo kuzenza zibe sisisombululo esithandwayo kwiindawo zokugcina ubushushu eziphakathi nezinkulu.
Ngenxa yokwamkelwa okukhulu kweephaneli ze-polyurethane, iinkqubo zanamhlanje zokuhambisa izinto ezibandayo ziphucule kakhulu umgangatho wokugcinwa kwazo ngelixa zinciphisa iindleko zokusebenza zizonke. Ezi paneli ngoku zidlala indima ephambili kwiziseko zophuhliso ze-cold chain ezonga amandla kuzo zonke iindawo zokutya, amayeza, kunye nemizi-mveliso.
Ukusebenza Okugqwesileyo Kokugquma KweePaneli Zokugcina Izinto Ezibandayo zePolyurethane
Inzuzo ephambili yokhuphiswano lweepaneli zokugcina izinto ezibandayo ze-polyurethane ikwisakhiwo sazo sangaphakathi seeseli ezivaliweyo. Imigangatho yeshishini ifuna iipaneli ze-polyurethane ezikumgangatho ophezulu ukuze kufezekiswe izinga leeseli ezivaliweyo elingaphezulu kwama-95 ekhulwini. Iarhente ekhupha igwebu idala ii-micro-pores ezivaliweyo ngaphakathi kwezinto eziphambili, kwaye ezi pores zivala ngempumelelo iindlela zokudlulisa ubushushu. Ngenxa yoko, utshintshiselwano lobushushu phakathi kwangaphakathi nangaphandle kwendawo yokugcina izinto ezibandayo luhlala luphantsi kakhulu.
Ngenxa yesi silinganiso siphezulu seeseli ezivaliweyo, iiphaneli ze-polyurethane zihlala zifikelela kwinqanaba lokuqhuba ubushushu phakathi kwe-0.018 kunye ne-0.024 W/m·K. Izixhobo zokukhusela zemveli ezifana neebhodi zoboya belitye okanye iiphaneli ze-polystyrene ze-EPS zihlala zibonisa amaxabiso okuqhuba ubushushu phakathi kwe-0.035 kunye ne-0.045 W/m·K. Phantsi kweemfuno ezifanayo zokukhusela ubushushu, iiphaneli ze-polyurethane zinokufikelela ekusebenzeni okujoliswe kuko malunga nesiqingatha sobukhulu bezixhobo eziqhelekileyo. Le nzuzo inciphisa ngokuthe ngqo ukusetyenziswa kwendawo yokwakha kwaye iphucula umthamo wokugcina ongasetyenziswayo.
Iiphaneli zokugcina izinto ezibandayo zePolyurethane zikwalinganisela ukusebenza kobushushu kunye namandla oomatshini ngokusebenzisa uxinano lwezinto ezilawulwayo. Iiphaneli zeprimiyamu zihlala zigcina uxinano oluvela kwi-foam phakathi kwe-38 kunye ne-40 kg/m³. Olu luhlu lubonisa indawo efanelekileyo yokulinganisela phakathi kokuqina kwesakhiwo kunye nokusebenza kakuhle kobushushu. Uxinano oluphantsi lunciphisa amandla oxinzelelo kwaye lwandisa umngcipheko wokuguquguquka. Uxinano oluphezulu luphakamisa ukuhanjiswa kobushushu kunye neendleko zezinto ngaphandle kokubonelela ngeenzuzo ezilinganayo.
Iinkcukacha zobugcisa kunye neemeko zokusetyenziswa
Abavelisi badla ngokuvelisa iiphaneli zokugcina izinto ezibandayo ze-polyurethane ngokubopha i-polyurethane foam eqinileyo phakathi kweengqimba ezimbini zeeshiti zentsimbi ezipeyintwe kwangaphambili. Olu lwakhiwo oludibeneyo lubonelela ngobushushu kunye nokuqina komphezulu. Ukukhethwa kobukhulu beephaneli kulandela imigaqo engqongqo esekelwe kubushushu.
Iiphaneli ezinobukhulu obungama-50 ukuya kwi-100 mm zilungele iindawo zokugcina ezintsha ezingaphezulu kwe-0°C. Amagumbi okugcina abandayo asebenza malunga ne--18°C adla ngokufuna iiphaneli eziphakathi kwe-100 kunye ne-150 mm ubukhulu. Kwiindawo zokugcina izinto eziqandisa ngokukhawuleza okanye kwiindawo ezinobushushu obuphantsi kakhulu ezingaphantsi kwe--25°C, iinjineli zihlala zichaza iiphaneli ezijiyileyo eziphakathi kwe-150 ukuya kwi-200 mm. Ezi zakhiwo ziqinisekisa ubushushu obuzinzileyo bangaphakathi kwaye zithintela ukulahleka kwamandla okugqithisileyo.
Amandla okucinezela ahlala enye iparameter ebalulekileyo kuyilo lokugcina izinto ezibandayo. Iiphaneli kufuneka zixhase imithwalo evela kwiinkqubo zeeshelufu, ii-evaporators, kunye nezinye izixhobo ezifakiweyo. Iiphaneli zokugcina izinto ezibandayo ze-polyurethane ezikumgangatho ophezulu zihlala zifikelela kumaxabiso amandla okucinezela angaphezu kwe-150 kPa. Eli nqanaba liqinisekisa ukuthembeka kwesakhiwo ixesha elide ngexesha lokusebenza okuqhubekayo.
Ukhuseleko lomlilo lukwachaphazela ukukhethwa kwezinto. Uninzi lweepaneli zokugcina izinto ezibandayo ze-polyurethane zihlangabezana nemigangatho yokumelana nomlilo ye-B1 okanye ye-B2. Izinto ze-B1 ziyazicima ngokwazo kwimizuzwana emithathu emva kokususwa komlilo. Izinto ze-B2 ziyazicima ngokwazo kwimizuzwana emithathu ukuya kwemithandathu. Ezi mpawu zinciphisa kakhulu umngcipheko wokusasazeka komlilo kwaye ziphucula ukhuseleko lwesakhiwo ngokubanzi.
Uzinzo lwezinto ezibonakalayo lwahlula ngakumbi iiphaneli ezikumgangatho ophezulu. Iiphaneli zokugcina amanzi ezibandayo zepolyurethane zihlala zigcina amazinga okufunxa amanzi angaphantsi kwe-1 ekhulwini. Zikwasebenza ngokuthembekileyo kumanqanaba obushushu ahlukeneyo ukusuka kwi--60°C ukuya kwi-+120°C. Olu zinzo luqinisekisa ukusebenza kobushushu obuhambelanayo phantsi kweemeko zokusebenza ezinzima kunye nokujikeleza kobushushu rhoqo.
Iingenelo zoLwakhiwo: Iteknoloji yoQhagamshelo loLwimi noMgxobhozo eQinisekisiweyo
Iibhulorho ezibandayo zimele enye yezona zisongelo zinkulu ekusebenzeni kakuhle kokugcina ubushushu. Iiphaneli zokugcina ubushushu zePolyurethane zijongana nale ngxaki ngeenkqubo zonxibelelwano zolwimi oluvuthiweyo kunye nomgca odibeneyo kunye neendlela zokutshixa ezingaqhelekanga ezakhelwe ngaphakathi. Ezi nkqubo zivumela iiphaneli ukuba zilingane kakuhle kwaye zenze umaleko wokukhusela oqhubekayo.
Olu lwakhiwo luqinisekisa ukusebenza kakuhle kokuvala umthungo. Xa abafaki bongeza imicu yokuvala yobungcali kunye nezizalisi ze-foam, ukuvuza komoya kunye nokulahleka komkhuhlane kwiindawo zokudibanisa kuyehla kube ngamanqanaba amancinci. Kwindawo yokugcina umbane egubungela malunga ne-1,000 square metres, iiphaneli ze-polyurethane ezikumgangatho ophezulu zinokunciphisa ukusetyenziswa kombane ngonyaka malunga nama-20 ukuya kuma-30 ekhulwini xa kuthelekiswa nezixhobo zokugquma eziqhelekileyo. Oku kunciphisa kuthetha ukuba kukho iingenelo ezinkulu zoqoqosho zexesha elide kunye nembuyekezo ekhawulezileyo kutyalo-mali.
Ixesha leposi: Jan-28-2026