Common refrigerant ODP and GWP, security classification

2019 - 05 - 17 refrigerant to the global environment indexes mainly include the influence of ozone depletion potential ( ODP) And global warming potential ( GWP) ; In addition to impact on the environment, refrigerant should have acceptable security, to safeguard the people's life and property security. ODP( Ozone Depletion Potential, ozone-depleting Potential) ODP said chloric fluorine carbon in the atmosphere environment ozone depletion and the power of the R11 ratio of ozone depletion ability, R11 ODP = 1. 0. The environmental characteristics of refrigerant ODP value is smaller, the better. According to the current level, think the ODP value less than or equal to 0. 05 refrigerant is acceptable. GWP( Global Warming Potential, Global Warming Potential) GWP is greenhouse gas emissions generated by climate impact indicators, said during a certain period of time ( 20 years, 100, 500) , some kind of greenhouse gas CO2 greenhouse effect corresponds to the same effect, the quality of the GWP of CO2 = 1. 0. Calculate the GWP are usually based on 100, as GWP100, the Montreal protocol and the Kyoto protocol GWP100 are adopted. Refrigerant safety classification of refrigerants should have acceptable security, security mainly includes the toxic and flammable, national standard 'classification of refrigerant number method and safety of GB/T 7778 - 2017 the toxicity of refrigerant will be divided into class A ( Low chronic toxicity) , class B ( High chronic toxicity) Flammability, divided into category 1 ( No flame propagation) , 2 l class ( Weak yet) , 2 class ( However,) , class 3 ( Combustible and explosive) 。 According to GB/T 7778 - 2017, refrigerant security is subdivided into eight categories, respectively: A1, A2L, A2, A3, B1, B2L, B2, B3, where A1 is the most safe, the most dangerous B3. Common refrigerant ODP and GWP, as well as the security classification is as follows:

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