Cov tshuaj refrigerant, tseem hu ua refrigerant, yog cov khoom siv ua haujlwm hauv lub tshuab tub yees. Tam sim no, muaj ntau tshaj 80 hom tshuaj uas siv tau ua cov tshuaj refrigerant. Cov tshuaj refrigerant feem ntau yog Freon (xws li: R22, R134a, R407c, R410a, R32, thiab lwm yam), ammonia (NH3), dej (H2O), carbon dioxide (CO2), thiab me me ntawm cov hydrocarbons (xws li: R290, R600a).
Cov ntsuas kev cuam tshuam ntawm cov tub yees rau thoob ntiaj teb ib puag ncig feem ntau suav nrog: ozone depletion potential (ODP) thiab global warming potential (GWP); ntxiv rau qhov cuam tshuam rau ib puag ncig, cov tub yees kuj yuav tsum muaj kev nyab xeeb txaus los tiv thaiv tib neeg lub neej thiab khoom vaj khoom tsev.
ODP Lub Peev Xwm Ua Rau Ozone Poob Qis: Qhia txog lub peev xwm ntawm chlorofluorocarbons hauv huab cua los rhuav tshem cov txheej ozone. Tus nqi me dua, qhov zoo dua ntawm cov yam ntxwv ib puag ncig ntawm cov tub yees. Cov tub yees uas muaj ODP tus nqi tsawg dua lossis sib npaug rau 0.05 raug suav hais tias siv tau raws li cov qib tam sim no.
GWP Lub Peev Xwm Ua Rau Lub Ntiaj Teb Sov Sov: Ib qho cim qhia txog kev cuam tshuam ntawm huab cua los ntawm cov pa roj av uas ua rau lub ntiaj teb sov, qhia tias nyob rau hauv ib lub sijhawm (20 xyoo, 100 xyoo, 500 xyoo), qhov cuam tshuam ntawm cov pa roj av uas ua rau lub ntiaj teb sov sib raug rau qhov zoo ntawm CO2 nrog tib qho txiaj ntsig, CO2. GWP = 1.0. Feem ntau xam GWP raws li 100 xyoo, uas yog GWP100, "Montreal Protocol" thiab "Kyoto Protocol" ob leeg siv GWP100.
1. Kev faib tawm ntawm cov tshuaj refrigerants
Raws li GB/T 7778-2017, kev nyab xeeb ntawm cov tub yees tau muab faib ua 8 pawg, uas yog: A1, A2L, A2, A3, B1, B2L, B2, B3, ntawm cov uas A1 yog qhov muaj kev nyab xeeb tshaj plaws thiab B3 yog qhov txaus ntshai tshaj plaws.
Cov theem kev nyab xeeb ntawm cov tshuaj refrigerants feem ntau yog raws li nram no:
Hom A1: R11, R12, R13, R113, R114, R115, R116, R22, R124, R23, R125, R134a,, R236fa, R218, RC318, R401a, R401b, R402a, R402b, R403a, R403b, R404a, R407a, R407b, R407c, R407d, R408a, R409a, R410a, R417a, R422d, R500, R501, R502, R507a, R508a, R508b, R509a, R513a, R744
Hom A2: R142b, R152a, R406a, R411a, R411b, R412a, R413a, R415b, R418a, R419a, R512a
A2L qeb: R143a, R32, R1234yf, R1234ze(E)
Chav Kawm A3: R290, R600, R600a, R601a, R1270, RE170, R510a, R511a
Qeb B1: R123, R245fa
Pawg B2L: R717
Raws li qhov kub ntawm cov khoom siv refrigerant nyob rau hauv qhov ntsuas cua (100kPa), nws tuaj yeem muab faib ua: cov khoom siv refrigerant kub siab, cov khoom siv refrigerant kub nruab nrab, thiab cov khoom siv refrigerant kub qis.
Cov tub yees txias uas muaj qhov kub thiab txias qis: qhov kub ntawm cov dej ua kom sov siab dua 0 ° C, thiab qhov siab ntawm cov dej noo qis dua 29.41995 × 104 Pa. Cov tub yees txias no tsim nyog rau kev siv hauv cov tshuab cua txias centrifugal hauv cov tshuab cua txias.
Cov tub yees txias nruab nrab-siab nruab nrab: cov tub yees txias nruab nrab-siab nruab nrab: qhov kub thiab txias evaporation -50 ~ 0 ° C, condensing pressure (196.113 ~ 29.41995) × 104Pa. Hom tub yees txias no feem ntau siv rau hauv cov tshuab compression ib theem thiab ob theem compression piston refrigeration systems.
Cov tub yees txias siab thiab qis kub: cov tub yees txias siab thiab qis kub: qhov kub evaporation qis dua -50 ° C, thiab qhov siab condensation siab dua 196.133 × 104 Pa. Hom tub yees txias no haum rau qhov kub qis ntawm cov khoom siv txias cascade lossis cov khoom siv kub qis dua -70 ° C.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-28-2022
