Views:5 Author:Site Editor Publish Time: 2021-01-07 Origin:Site
Compared with the traditional R22 refrigerant, the flammability of R290 refrigerant is its "bad temper", and it is also a difficult problem we encounter in practical application. According to the relevant standards, the safety level of R290 refrigerant belongs to the A3 category, which means that it is a highly flammable substance. It is a big problem to ensure safety during use.
Following we list the refrigerant safety classification of the common use refrigerant gas types.
|Lower Flammable Limit||vol%||2.1||13.5||NA||NA||NA|
|Minimum Ignition Energy||mJ||0.31||30-100||NA||NA||NA|
|Heat of Combustion||MJ/kg||50.3||9.4||2.2||-4.4||4.2|
|Occupational Exposure Limit||PPMv||1000||1000||1000||1000||1000|
|Safety Level (ASHRAE34)||A3||A2||A1||A1||A1|
Lower Flammable Limit (LFL): refers to the minimum flammable concentration (evenly mixed with air) at 23°C and 101.3kPa.