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" Refrigerant Numbering txujci thiab kev faib tawm kev nyab xeeb" GB / T 7778-2017 qhia txog qhov muaj tshuaj lom cov tub yees rau hauv chav A (muaj tshuaj lom mob ntev), Chav B (muaj tshuaj lom mob ntev), cov nplaim tawg tau muab faib ua Chav 1 (tsis muaj tus nplaim taws sib kis), Chav Kawm 2L (tsis muaj tshuaj lom), Chav 2 (flammable), thiab Chav Kawm 3 (flammable thiab heev). 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.
Qeb kev nyab xeeb ntawm lub tub yees:
Cov theem kev nyab xeeb ntawm cov tub yees txias muaj raws li nram no:
Chav A1:
R11, R12, R13, R113, R114, R115, R116, R22, R124, R23, R125, R134a, R227ea, R236fa, R1233zd (E), R1336mzz (Z), R218, RC318, R401a, R401b, R402a, R401b, R402a, R401b, R402a R403a, R403b, R404a, R407a, R407b, R407c, R407d, R408a, R409a, R410a, R417a, R422d, R500, R501, R502, R507a, R508a, R508b, R509a, R513a
Qeb A2:
R142b, R152a, R406a, R411a, R411b, R412a, R413a, R415b, R418a, R419a, R512a
A2L qeb:
R143a, R32, R1234yf, R1234ze (E)
Qeb A3:
R290, R600, R600a, R601a, R1270, RE170, R510a, R511a
Qeb B1: R123, R245fa
Qeb B2L: R717
