Cov tub yees R407C

R407C, vim nws cov yam ntxwv zoo sib xws thiab kev ua tau zoo rau R22, tau dhau los ua qhov hloov mus sij hawm ntev rau R22 thiab siv rau hauv ntau lub tshuab cua txias thiab cov tshuab tsis muaj centrifugal. R407C tuaj yeem siv rau hauv qhov qub R22 system yam tsis tau hloov kho lub system. Tsuas yog ib tug me me ntawm cov khoom nyob rau hauv thawj qhov system yuav tsum tau hloov, thiab cov ntxhia refrigeration roj nyob rau hauv lub qub system yuav tsum tau hloov nrog lubricating roj (POE roj) uas yog miscible nrog R407C. R407C tuaj yeem sau ncaj qha, ua tiav ib puag ncig tus phooj ywg hloov pauv ntawm cov khoom qub. Vim lub fact tias R407C yog ib tug tov uas tsis yog azeotropic ua hauj lwm kua, nyob rau hauv thiaj li yuav xyuas kom meej tias nws cov sib xyaw muaj pes tsawg leeg tsis hloov, R407C yuav tsum tau muab sau ua kua. Yog hais tias muaj ib tug refrigerant leakage nyob rau hauv lub R407C system thiab cov kev ua tau zoo ntawm lub system hloov loj, qhov seem R407C nyob rau hauv lub system tsis tuaj yeem siv thiab rov siv dua. Qhov seem R407C tub yees nyob rau hauv lub system yuav tsum tau emptied thiab refilled nrog tshiab R407C refrigerant. Tus nqi ODP ntawm R407C yog xoom, thiab tus nqi GWP kuj tseem siab. Lub boiling point yog ze rau R22. Ntawm tus qauv atmospheric siab, nws kub taw tes yog -43.4 ~ 36.1 degree . Qhov kub thiab txias yog li ntawm -36.1 degree mus rau ib tug plam degree ntawm -43.4 degree . Tab sis thaum siv rau cov tshuab cua txias, nws cov vapor siab yog 10% siab dua R22. Nyob rau hauv cov huab cua txias, nws lub ntim ntim txias thiab txias coefficient yog 5% qis dua R22; Nyob rau hauv qhov kub thiab txias, txawm hais tias lub tub yees coefficient tsis hloov pauv loj, lub peev xwm txias rau ib chav tsev ntim tau txo los ntawm 20%. Kev hloov pauv tsis zoo ntawm R407c cuam tshuam ncaj qha rau kev hloov pauv ntawm cov tub yees. R407c tsis yog miscible nrog ntxhia roj nplua nyeem, tab sis tuaj yeem yaj hauv cov khoom siv hluavtaws polyester. Muaj kev xav tau siab rau dryness. R407C yog ternary uas tsis yog azeotropic refrigerant qhia ua ib qho kev hloov rau R22. Hauv kev hloov tiag tiag, tsuas yog cov roj lubricating yuav tsum tau hloov, thiab lub tshuab ziab khaub ncaws thiab lwm qhov chaw yuav tsum tau hloov. Txhawm rau txhim kho tus yam ntxwv ntawm cov roj ester yooj yim decomposing rau hauv seem, cov khoom ntxiv feem ntau ntxiv rau hauv lub cev. Thaum siv, nws yog qhov zoo tshaj plaws los xaiv lub tshuab hluav taws xob counterflow kom siv nws qhov zoo. Tsis tas li ntawd, thaj tsam ntawm lub condenser thiab qhov ntws ntawm cov cua txias nruab nrab kuj nce. R407c kuj muaj cov yam ntxwv ntawm kev huv, tsis muaj tshuaj lom, tsis muaj nplaim taws, thiab cov tub yees zoo, thiab siv dav hauv kev lag luam cua txias.

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