Buy air conditioning needs to see it with what kind of refrigerant?

a lot of people will ask, buy air conditioning needs to see it with what kind of refrigerant? At present commonly used air conditioning refrigerant R22, r410a, R290, R32, etc, to evaluate them before need to clear up the ODP and GWP these two concepts.

ODP( OzoneDepletionPotential, ozone-depleting potential) To review material gas to escape to the potential influence on the destruction of ozone in the atmosphere. Provisions of refrigerant R11 ozone destruction as a benchmark, in the R11 ODP value is 1, other materials of the ODP is relative to the comparison of R11 value, the smaller this value, its environmental characteristics, the better.

GWP( GlobalWarmingPotential, global warming potential) , it is a kind of material to produce an index of the greenhouse effect. GWP is in the 100 timeframe, refrigerant greenhouse effect corresponds to the same effect of the quality of the carbon dioxide. Carbon dioxide was used as a reference gas, because of its impact on global warming.

because R22 refrigerant can cause damage to the ozone layer is gradually eliminated by the market, at present, only some low-end of the air conditioning that decide frequency in the use of the refrigerant

R410A is a kind of refrigerant replacement of R22, although the refrigerant does not destroy the ozone layer, but the GWP is higher than that of R22, even to the promoting effect of global warming is larger, and therefore is not ideal, can only be transitional substitutes.

the R32 refrigerant is gradually replace R410A refrigerant, only 40% of R22, GWP, from the perspective of environmental protection is preferred choice with R32 refrigerants aircraft, refrigerant R290 hasn't been developed.

according to GB/T7778 - 2017, based on the flammability and toxicity, refrigerant is divided into eight security classification, respectively is A1, A2L, A2, A3, B1, B2L, B2, B3 ( Security descending order) 。 Four kinds of refrigerants R290 has flammability and R32, but also need not worry too much, as long as the installation process to follow the specification, will not pose a security threat.

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