Difluoromethane
Txheej Txheem Cej Luam Khoom
Lub Npe Tshuaj: Difluoromethane
Tus lej CAS: 75-10-5
Cov mis mos molecular: CH₂F₂
Qhov Hnyav Molecular: 52.02 g/mol
Lub Npe Feem Ntau: R-32 (ua ib yam khoom siv txias)
Difluoromethane (R-32) yog ib hom roj hydrofluorocarbon (HFC) uas tsis muaj xim, tsis muaj tshuaj lom, thiab yooj yim hlawv nrog kev ua haujlwm kub zoo heev. Ua ib hom roj refrigerant tiam tom ntej uas tsis ua rau ib puag ncig puas tsuaj, nws tau dhau los ua lwm txoj hauv kev tseem ceeb rau cov roj refrigerant ib txwm muaj GWP (Global Warming Potential) uas paub dav txog nws qhov kev sib npaug ntawm kev ua haujlwm zoo, kev nyab xeeb, thiab kev phooj ywg ib puag ncig.
Cov Khoom Tseem Ceeb
| Vaj tse | Cov Lus Qhia Tshwj Xeeb | Qhov zoo |
| Kub taw tes (ntawm 1 atm) | -51.6°C (-60.9°F) | Ua kom muaj kev hloov pauv cua sov zoo hauv cov ntawv thov kub qis |
| GWP (Potential of Global Warming, 100 - xyob) | 675 | Qis dua li R - 410A (GWP = 2088) thiab R - 22 (GWP = 1810), txo cov pa roj carbon dioxide |
| ODP (Muaj Peev Xwm Ua Rau Ozone Poob) | 0 | Tsis muaj kev puas tsuaj rau txheej ozone, ua raws li cov cai ib puag ncig thoob ntiaj teb (piv txwv li, Montreal Protocol) |
| Kub Tseem Ceeb | 78.1°C (172.6°F) | Haum rau cov tshuab cua txias thiab cov twj tso cua sov ua haujlwm hauv qhov chaw kub nruab nrab mus rau siab |
| Kev kub hnyiab | Me ntsis yooj yim hlawv (A2L kev faib tawm ib ASHRAE 34) | Muaj kev nyab xeeb rau feem ntau cov ntawv thov hauv tsev thiab kev lag luam nrog kev tsim qauv zoo |
| Kev Ua Kub | Siab (zoo dua R - 410A) | Txhim kho kev ua kom txias/cua sov zoo dua, txo kev siv zog ntawm cov khoom siv |
Cov Ntawv Thov Ib Txwm Muaj
R-32 siv dav hauv ntau yam kev lag luam thiab cov neeg siv khoom vim nws ua tau zoo tshaj plaws thiab muaj txiaj ntsig zoo rau ib puag ncig:
Cua Txias Rau Tsev Neeg Thiab Lag Luam: Ua ib yam khoom siv txias tseem ceeb rau cov tshuab cua txias sib cais, cov tshuab cua txias qhov rai, thiab cov tshuab VRV (Variable Refrigerant Volume). Nws hloov R-410A hauv cov khoom siv tshiab, txo kev siv hluav taws xob los ntawm 10-15%.
Twj Tso Kua Kub: Zoo tagnrho rau cov twj tso kua kub los ntawm huab cua (ASHPs) thiab cov twj tso kua kub los ntawm dej (WSHPs), muab kev ua haujlwm kub ruaj khov txawm tias nyob rau qhov kub tsawg (-10 ° C txog 5 ° C).
Cov Tshuab Txias: Siv rau hauv cov tub yees me me mus rau nruab nrab, cov thawv tso saib, thiab cov chaw cia khoom txias, kom ntseeg tau tias txias zoo nrog kev cuam tshuam tsawg kawg nkaus rau ib puag ncig.
Cov Tshuaj Ua Npuas Ncauj: Hauv qee cov txheej txheem kev lag luam, R-32 ua haujlwm ua tus neeg sawv cev rau cov ua npuas polyurethane tawv, txhim kho cov khoom rwb thaiv tsev ua npuas ncauj.
Organic Synthesis: Ua haujlwm ua cov khoom siv raw hauv kev tsim cov tshuaj fluorinated, suav nrog cov tshuaj thiab cov polymers tshwj xeeb.
Kev Nyab Xeeb & Kev Ua Raws Cai
Cov Lus Qhia Txog Kev Nyab Xeeb
Kev Siv: Tsis txhob kov daim tawv nqaij/qhov muag ncaj qha; siv hnab looj tes tiv thaiv, tsom iav tiv thaiv, thiab cov khoom siv ua pa hauv cov chaw uas tsis muaj cua nkag.
Kev Khaws Cia: Khaws cia rau hauv qhov chaw txias, qhuav, thiab muaj cua nkag tau zoo kom deb ntawm cov nplaim taws qhib, qhov kub siab, thiab cov tshuaj oxidizing. Siv cov thawv kaw, tiv taus xeb (piv txwv li, cov thooj voos kheej kheej hlau lossis txhuas).
Kev Thauj Mus Los: Ua raws li UN cov cai rau kev thauj cov tshuaj txias (UN tus lej: 3252); xyuas kom meej tias cov thoob dej khov tau ruaj ntseg thiab muaj daim ntawv lo rau.
Kev Ua Raws Cai
Ua tau raws li cov qauv ASHRAE 34 (A2L kev nyab xeeb kev faib tawm).
Ua raws li EU F-Gas Regulation (Regulation (EU) 2014/512), txwv cov pa roj F-gas thiab txhawb cov kev xaiv uas muaj GWP qis.
Tau txais kev pom zoo los ntawm cov chaw tsim khoom siv loj (piv txwv li, Daikin, Mitsubishi Electric, Gree) rau kev siv rau hauv lawv cov qauv AC thiab lub twj tso cua sov tshiab.
Cov Ntaub Ntawv Txog Kev Siv Tshuab (TDS) Cov Ntsiab Lus Tseem Ceeb
| Cov Qauv | Tus nqi | Txoj Kev Ntsuas |
| Kev huv (min) | 99.9% | GC (Roj Chromatography) |
| Cov ntsiab lus noo noo (max) | 10 ppm | Kev Ntsuas Karl Fischer |
| Cov ntsiab lus acid (max) | 0.1 ppm | Kev ntsuas qib |
| Cov Khoom Tsis Tshua Muaj Peev Xwm Hloov Pauv (max) | 10 mg/kg | Kev ntsuas qhov hnyav |
| Siab ntawm cov pa (ntawm 25 ° C) | 1.72 MPa | Lub Tshuab Ntsuas Siab |
Vim li cas ho xaiv peb cov Difluoromethane (R-32)?
Kev Ntshiab Siab: Kev ntshiab 99.9% tas li ua kom cov khoom siv ua haujlwm ruaj khov thiab siv tau ntev.
Zoo rau Ib puag ncig: GWP qis (675) txhawb nqa lub hom phiaj thoob ntiaj teb kev tsis muaj pa roj carbon thiab ua tau raws li cov cai ib puag ncig nruj.
Tus nqi tsim nyog: Kev ua haujlwm thermal zoo dua txo cov nqi zog rau cov neeg siv kawg, thaum peb cov peev xwm muab khoom ntau txo cov nqi yuav khoom.
Kev Txhawb Nqa Thoob Ntiaj Teb: Peb muab kev sab laj txog kev siv tshuab, kev cob qhia kev nyab xeeb, thiab kev xa khoom raws sijhawm rau cov neeg siv khoom thoob ntiaj teb, nrog rau daim ntawv pov thawj suav nrog ISO 9001 thiab REACH.
Tiv Tauj Peb
Yog xav paub tus nqi, cov qauv, lossis cov ntaub ntawv TDS/COA tag nrho, hu rau peb pab neeg muag khoom:
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