Cov cim tseem ceeb ntawm kev cuam tshuam ntawm tub yees nyob rau lub ntiaj teb ib puag ncig yog ozone depletion muaj peev xwm (ODP) thiab lub ntiaj teb sov taus (GWP); ntxiv rau kev cuam tshuam rau ib puag ncig, cov tub yees kuj yuav tsum muaj kev nyab xeeb zoo los tiv thaiv tib neeg' s lub neej thiab khoom.
ODP (Ozone Depletion Peev Xwm, nws muaj peev xwm ua puas tau ntxiv)
ODP sawv cev piv ntawm qhov sib piv ntawm lub peev xwm ntawm chlorofluorocarbons hauv cov huab cua kom rhuav tshem pov tseg txheej txheej mus rau lub peev xwm ntawm R11 ua kom rhuav tshem ozone txheej, thiab ODP ntawm R11=1.0. Qhov ntsuas me me ntawm ODP, qhov zoo dua ntawm cov ib puag ncig ntawm cov tub yees. Raws li cov qib tam sim no, cov tub yees uas muaj ODP tus nqi tsawg dua lossis sib luag li 0.05 yog suav tias yog qhov siv tau.
GWP (Kev Tsim Kev Cuam Tshuam Thoob Ntiaj Teb, ua kom muaj huab cua sov thoob ntiaj teb)
GWP yog qhov taw qhia ntawm kev nyab xeeb kev cuam tshuam los ntawm kev tsim cov pa roj ntsuab, uas txhais tau hais tias tsis pub dhau lub sijhawm (20 xyoo, 100 xyoo, 500 xyoo), kev cuam tshuam ntawm lub tsev ntsuab cov pa roj ntsuab sib raug zoo ntawm CO2 nrog tib cov nyhuv, thiab GWP ntawm CO2=1.0. GWP feem ntau yog xam raws li 100 xyoo thiab raug kaw raws li GWP100. Ob qho Montreal Kev Cog Lus thiab Kyoto Daim Ntawv Cog Lus siv GWP100.
Kev nyab xeeb kev faib tawm cov tub yees
Cov tub yees siv yuav tsum muaj qhov chaw nyab xeeb. Kev Nyab Xeeb tsuas yog suav nrog kev muaj tshuaj lom thiab nplaim taws. Lub teb chaws tus qauv" Txheej Txheem Tus lej Number Refrigerant Numbering thiab Kev Nyab Xeeb Kev Nyab Xeeb" GB / T 7778-2017 cais cov tshuaj lom cov tub yees mus rau Chav A (muaj tshuaj lom tsawg. ), Chav Kawm B (mob siab mob ntev ntev), cov nplaim taws tau muab faib ua Chav 1 (tsis muaj nplaim taws tawm), Chav Kawm 2L (tsis muaj lub cev tsis muaj zog), Chav Kawm 2 (ua kom kub nyhiab), thiab Chav Kawm 3 (flammable thiab tawg). Raws li GB / T 7778-2017, kev nyab xeeb ntawm tub yees tau faib ua 8 yam, uas yog: A1, A2L, A2, A3, B1, B2L, B2, thiab B3. Ntawm lawv, A1 yog kev nyab xeeb tshaj plaws thiab B3 yog qhov txaus ntshai tshaj plaws.