R32, tseem hu ua difluoromethane thiab carbon difluoride, tsis muaj xim, tsis muaj ntxhiab, thiab muaj kev nyab xeeb ntawm A2. R32 yog ib qho Freon hloov nrog cov khoom zoo heev thermodynamic. Nws muaj qhov kub tsis tshua muaj siab, qis vapor siab thiab siab piv, lub tub yees loj coefficient, xoom ozone depletion tus nqi, lub tsev cog khoom me me coefficient, thiab yog nplaim taws thiab tawg. Qhov txwv tsis pub muaj hluav taws kub hauv huab cua yog 15% ~ 31%, thiab nws yuav hlawv thiab tawg thaum raug hluav taws kub.
r290 tub yees gas
R290 refrigerant gas (propane) yog ib tug tshiab ib puag ncig tus phooj ywg refrigerant, feem ntau yog siv nyob rau hauv central cua txias, cua kub twj tso kua mis cua txias, cua txias hauv tsev thiab lwm yam khoom siv tub yees me me.
Raws li hydrocarbon refrigerant, R290 muaj ODP tus nqi ntawm 0 thiab GWP tus nqi tsawg dua 20. Nws muaj qhov zoo ntawm ib puag ncig zoo dua cov tub yees.
R290 tub yees muaj cov yam ntxwv ntawm ntau dua latent cua sov ntawm evaporation, zoo fluidity, thiab lub zog txuag. Txawm li cas los xij, vim nws cov nplaim hluav taws kub thiab tawg, qhov ntim ntim yog txwv, thiab qib kev nyab xeeb yog A3. Thaum siv R290 refrigerant qib, nqus tsev vacuum yuav tsum tau, thiab qhib nplaim taws yog txwv tsis pub, vim huab cua (oxygen) sib tov tuaj yeem tsim cov khoom tawg, uas yuav ua rau combustion thiab tawg thaum raug tshav kub thiab qhib nplaim taws.
R600a refrigerant gas (isobutane) yog ib qho tshiab hydrocarbon refrigerant nrog kev ua tau zoo heev. Nws yog muab los ntawm cov khoom xyaw ntuj, tsis ua rau lub ozone txheej, tsis muaj cov nyhuv tsev cog khoom, thiab yog ntsuab thiab ib puag ncig tus phooj ywg.
R600A yog tus cwj pwm los ntawm cov cua kub latent loj ntawm evaporation, muaj peev xwm txias txias, kev ua haujlwm zoo, tsis tshua muaj siab, tsis siv hluav taws xob, thiab kev kub ceev rov qab. Tau tshaj nrog ntau yam compressor lubricants. Nws yog cov roj tsis muaj xim ntawm qhov kub thiab txias thiab cov kua tsis muaj xim thiab pob tshab hauv nws lub siab. R600a feem ntau yog siv los hloov R12 tub yees thiab tam sim no feem ntau siv hauv cov khoom siv tub yees hauv tsev.
Qhov tawg txwv ntim ntawm R600a tub yees yog 1.9% ~ 8.4%, thiab qib kev nyab xeeb yog A3. Nws tuaj yeem tsim cov khoom tawg thaum sib xyaw nrog huab cua. Muaj kev phom sij ntawm combustion thiab tawg thaum raug tshav kub thiab qhib nplaim taws. Nws reacts hnyav thaum nws los ntawm kev sib cuag nrog oxidants. Nws cov vapor hnyav dua li huab cua thiab tuaj yeem ua rau qis qis mus rau qhov deb, thiab yuav ignite thiab backfire thaum ntsib qhov hluav taws kub.
R717 (ammonia) refrigerant gas
R717 (ammonia) yog qhov txaus ntshai tshaj li peb hom tub yees saum toj no. Nws yog ib qho tshuaj lom nruab nrab nrog qib 2 toxicity. Thaum qhov ntim ntawm ammonia vapor nyob rau hauv huab cua nce mus txog 0.5-0.6%, tib neeg tuaj yeem raug tshuaj lom yog tias lawv nyob hauv nws li ib nrab teev. Qhov xwm txheej ntawm ammonia txiav txim siab tias ammonia system yuav tsum tau ua haujlwm thiab tswj hwm tus qauv, thiab cov neeg ua haujlwm tub yees yuav tsum tau saib xyuas thaum siv nws.
Qhov zoo ntawm ammonia raws li lub tub yees yog: yooj yim kom tau, tus nqi qis, nruab nrab siab, chav tsev loj txias peev xwm, siab kub tso tawm coefficient, yuav luag insoluble nyob rau hauv cov roj, me me khiav tsis kam, yooj yim mus ntes to, tsis muaj kev puas tsuaj rau lub ozone txheej, thiab tsis muaj vaj tsev ntsuab.
Nws qhov tsis zoo yog: nws muaj ntxhiab tsw ntxhiab, muaj kuab lom, tuaj yeem hlawv thiab tawg, thiab muaj corrosive rau tooj liab thiab tooj liab alloys.
Thaum lub ntim ntawm ammonia vapor nyob rau hauv cov huab cua nce mus txog {{0}}.5-0.6%, nws tuaj yeem ua rau tawg. Yog li ntawd, qhov concentration ntawm ammonia nyob rau hauv cov huab cua nyob rau hauv lub computer chav tsev yuav tsum tsis txhob ntau tshaj 0.02mg / L. Ammonia yog cov nkev uas kub hnyiab tau ntawm qhov kub thiab txias, nrog rau qhov tawg txwv ntawm 16% mus rau 25%, feem ntau ignitable concentration ntawm 17%, thiab cov concentration thaum tsim qhov siab tshaj plaws tawg siab yog 22.5%.
