The use of refrigerant everything with R22 characteristic analysis

the following will be the use of R22 and R134a has a characteristic analysis is as follows:

1, R134a has a global warming ozeme depletion potential ( GWP) For 1200, R22 for 1700, both belong to the greenhouse gases.

2, everything cost ozone ozeme depletion potential ( ODP) 0, R22 is 0. 6, this is the reason for everything into environmental protection refrigerants.

3, R134a has a specific volume is 1 of R22. 47 times, and the latent heat of evaporation is small, so everything frozen to only 60% of the R22 unit of the unit. Press unit refrigerating capacity quotation computation, R22 unit price about everything about 60% of the unit.

4, heat conduction rate is 10% lower than that of R22, everything and everything of the unit of heat exchanger heat transfer area of demand is greater.

5, R134a has a strong water imbibition, 20 times that of R22, so for the dryer in the unit system request is higher, in order to prevent the onset of ice wall.

6, everything is larger than that of R22 in rubber material swelling effect is stronger, in the practice operation and mid-cooling medium leakage rate is higher. Other for copper corrosion resistance is stronger, will attack scene 'copper' in the process of using, it is necessary to add additives thus system.

7, R134a has a dedicated compressor system demand and special lipid lubricating oil, lipid lubricant because with high water absorbability, high foaming ability and high diffusivity, on the stability of the system function to R22 system by using mineral oil.

8, everything HFCs refrigerant and its special lipid oil price is higher than that of R22, equipment operation to protect capital is higher.

other known as environmental protection refrigerants of HFCs refrigerant r410a, R440A, R407C, while efficiency is superior to everything, but the same pipe component optimization work pressure is too high, and high pressure request, must improve the heat exchanger and crew planning, investment capital operation to protect senior defects, in the use of large refrigeration units are not used to China's basic national conditions at present stage, this is the international convention for the developing countries to broaden the use fixed number of year of HCFCs factors, group is also developing countries strive for results.

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