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The difference between R134A and R22

Time:2018-04-05 09:51:46 

RefrigerantR134aandtherefrigerant R22in usewith the following differencesand characteristics:

1, R134A,thermal conductivitythan that of R22isdecreased by 10%, sotheheat transfer areaoftheheat exchangeroftheR134Aunitsneed more.

,OfHFCsclassrefrigerantR134Asuch asitsspeciallipidoilprice is higher than theR22,thehigherthecostofoperation and maintenanceoftheequipment.

R134Aabsorbentstrong,whichis20timesfasterthanthe R22, so thehigherthedryerunit systemrequirementstoavoidthephenomenonofice blocking.

R134Aglobalwarming potential(GWP) of0.25,R220.36,belong to the samegreenhouse gas.

R134Aozone-depleting potential(ODP) of0, R220.06ThisistheR134Abecomeenvironmentally friendlyYantairefrigerantreason.

R134ahematocritis1.47 times oftheR22,andthelatent heat of evaporationissmall,R134Aunitsrefrigerating capacityisonly60%oftheR22cryogenic refrigerationunit.Thecooling capacitybyunitprices,thetheR22unitpriceapproximately60%oftheunitsR134A.

7, R134Athan R22strongswellingeffectoftherubber-likesubstance,thehigher rateofrefrigerant leakagein the actual operation.Inaddition,coppercorrosive,will occurintheuse of the processthe"copper platingphenomenon",thesystemmust increase theadditive.

8,thetheR134Asystem requiresa dedicated compressorand a dedicatedlipidslubricants, lipids andlubricantshaving a highwater-absorbent,high foamingandhigh diffusivity,thestabilityoftheperformance of the systemis inferiorto R22are usedmineral oil.

In summary, theidealrefrigerantin the short termdoes not existinour countryat this stageR22refrigerantR134Aenvironmentally friendly refrigerants,still hastheefficient,stable,inexpensive,large refrigeration unitsaspectswillalsobein a dominantposition,but before that, R22refrigerantwill continueto be used.